<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body dir="auto"><div dir="auto">Omlouvám se - koukal jsem blbě, díky.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div id="composer_signature" dir="auto"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">Láďa <div dir="auto"><br></div><div dir="auto">Odesláno z příliš chytrého mobilu.</div></div><div dir="auto"><br></div><div><br></div><div align="left" dir="auto" style="font-size:100%;color:#000000"><div>-------- Původní zpráva --------</div><div>Od: Pavel Hudeček <edizon@seznam.cz> </div><div>Datum: 28.01.24  18:49  (GMT+01:00) </div><div>Komu: hw-list@list.hw.cz </div><div>Předmět: Re: Laboratorní zdroj </div><div><br></div></div>
    Jestli jde o ten 1005006266276774 tak tam schéma je, je to pátý
    obrázek.<br>
    Celkem klasika, jen teda napájení operáku bude asi poněkud na
    hraně:-)<br>
    <br>
    PH<br>
    <br>
    <div class="moz-cite-prefix">Dne 28.01.2024 v 18:37
      ladislav.krucinsky napsal(a):<br>
    </div>
    <blockquote type="cite">
      
      <div dir="auto">Zeptám se - dostal jste k tomu analogovému
        regulátoru i schéma? Pokud ano, mohl byste mi ho poskytnout? Na
        té stránce ho nějak nevidím - koukám jen přes mobil.</div>
      <div dir="auto"><br>
      </div>
      <div dir="auto" id="composer_signature">
        
        Láďa 
        <div dir="auto"><br>
        </div>
        <div dir="auto">Odesláno z příliš chytrého mobilu.</div>
      </div>
      <div dir="auto"><br>
      </div>
      <div><br>
      </div>
      <div align="left" style="font-size:100%;color:#000000" dir="auto">
        <div>-------- Původní zpráva --------</div>
        <div>Od: Jan Kuba <a href="mailto:honza.kuba@gmail.com" class="moz-txt-link-rfc2396E"><honza.kuba@gmail.com></a> </div>
        <div>Datum: 27.01.24 22:24 (GMT+01:00) </div>
        <div>Komu: HW-news <a href="mailto:hw-list@list.hw.cz" class="moz-txt-link-rfc2396E"><hw-list@list.hw.cz></a> </div>
        <div>Předmět: Re: Laboratorní zdroj </div>
        <div><br>
        </div>
      </div>
      <div dir="ltr">Dneska jsem náhodou na Ali narazil na tu
        stavebnici, která je ve stejné podobě už několik let.
        <div><br>
        </div>
        <div><a class="moz-txt-link-freetext" href="https://www.aliexpress.com/item/1005006266276774.html">https://www.aliexpress.com/item/1005006266276774.html</a>?<br>
        </div>
        <div><br>
        </div>
        <div>Tohle opravdu funguje dobře, cena je také zajímavá.</div>
        <div> Ideální alternativa k  těm spínaným Čínám pro věci, které
          vyžadují precizní omezení proudu.</div>
        <div>Před pár lety jsem to s kolegou postavil ve dvou
          exemplářích  ( 2A max. ) a dodnes to maká bez problémů.</div>
        <div>Testy s LED OK, a ta energie 10M elytu na výstupu je
          mizivá.  Já tam mám jen 5M nějaký bipolární Vishay LOW ESR.</div>
        <div><br>
        </div>
        <div>Pokud by to někdo objednával, tak přihoďte z Ali ještě
          minimálně jeden Aripot, neboť ve stavebnici jsou jen 270ˇ
          potenciometry ... </div>
        <div><a class="moz-txt-link-freetext" href="https://www.aliexpress.com/item/1005005881888365.html">https://www.aliexpress.com/item/1005005881888365.html</a></div>
        <div>A určitě nějaký modul měření:</div>
        <div><a class="moz-txt-link-freetext" href="https://www.aliexpress.com/item/1005004508767695.html">https://www.aliexpress.com/item/1005004508767695.html</a><br>
        </div>
        <div><a class="moz-txt-link-freetext" href="https://www.aliexpress.com/item/1005005139711982.html">https://www.aliexpress.com/item/1005005139711982.html</a><br>
        </div>
        <div><a class="moz-txt-link-freetext" href="https://www.aliexpress.com/item/1005004396903224.html">https://www.aliexpress.com/item/1005004396903224.html</a><br>
        </div>
        <div><br>
        </div>
        <div>Já někde mám dvě trafa  a  tyhle: <a class="moz-txt-link-freetext" href="https://www.mfcomm.co.uk/wp-content/uploads/2022/04/alcatel-1512-pl-2-rum-e211s-37842447-scaled.jpg">https://www.mfcomm.co.uk/wp-content/uploads/2022/04/alcatel-1512-pl-2-rum-e211s-37842447-scaled.jpg</a>  </div>
        <div>docela pěkné krabičky od modemů, kdyby měl někdo chuť a čas
          si to postavit. V případě zájmu zdarma k dispozici ( osobně,
          nebo za poštovné pošlu ) </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
      </div>
      <div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br>
        <table style="border-top:1px solid #d3d4de">
          <tbody>
            <tr>
              <td style="width:55px;padding-top:13px"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail"><img height="29" width="46" src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" style="width: 46px; height: 29px;" onmouseover="imageMousePointerUpdate(true)" onmouseout="imageMousePointerUpdate(false)"></a></td>
              <td style="width:470px;padding-top:12px;color:#41424e;font-size:13px;font-family:Arial,Helvetica,sans-serif;line-height:18px">Neobsahuje
                žádné viry.<a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" style="color:#4453ea">www.avast.com</a></td>
            </tr>
          </tbody>
        </table>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">út 23. 1. 2024 v 16:26
          odesílatel Pavel Hudeček <<a class="moz-txt-link-freetext" href="mailto:edizon@seznam.cz">edizon@seznam.cz</a>>
          napsal:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div> No ten test s LEDkou málo kterej zdroj dá:-)<br>
            Dnes už to možná bude lepší, ale tehdy to nedal žádnej z
            testovaných. K když jsem přesně tohle tady před lety nakous,
            tak všeobecný názor byl, že to není důležité a proto je
            normální mít na výstupu C aspoň v řádu µF.<br>
            <br>
            Já teda nakonec stejně dosáh toho, že ten prototyp projde
            testem, kdy je nastaveno 20 V, 20 mA a LEDka opakovaně
            přežívala připojení. Ala pak tam taky přišel ještě požadavek
            na ext. zpětnou vazbu, čímž se to mírně zhoršilo a LEDka
            přežívala jen asi 10x.<br>
            <br>
            Celkovej závěr, co jsem si z toho odnes byl, že různí lidé
            mají ohledně zdrojů velmi různé priority, vedoucí k dost
            protichůdným vlastnostem.<br>
            <br>
            PH<br>
            <br>
            <div>Dne 23.01.2024 v 16:10 Jan Kuba napsal(a):<br>
            </div>
            <blockquote type="cite">    To ale  nejspįš nebyl primárně
              laboratorní zdroj. Možná tam šlo právě o nějaké dálkové
              řízení.
              <div>Když bych k němu například připojil LED, nastavil
                omezení na 20mA a napětí dejme tomu pomalu zvedal na 15
                V, bude vše OK. Jenomže stačí LED na chvilku odpojit a
                zas připojit a je po ní. Když o tom člověk ví tak se s
                tím dá žít, ale nějaký větší kondenzátor na výstupu je
                prostě problém.</div>
              <div>Ty staré Teslácké zdroje typu BSxxx na výstupu nic
                neměly, teda možná nějakou keramiku.. Sice to bylo 1A
                max. , ale výše popsaný problém tam nehrozil. (Mají
                jinou chybu, při zapnutí síťovým vypínačem to na výstupu
                lupne naplno )</div>
              <div>Asi není od věci mít těch</div>
              <div>zdrojů víc a opravdu vědět který k čemu použít, jaké
                má vlastnosti a limity pro to které využití.</div>
              <div><br>
              </div>
              <div>Co se týče lineárního zdroje tak Číňan měl takovou
                pěknou stavebnici asi se třema operákama  a plno smetí
                okolo, bylo to poměrně složité, ale chodilo to velmi
                dobře. Vzpomínám si že jsem to s kamarádem měřil i
                pomocí paměťového osciloskopu a oba jsme se divili jak
                ten zdroj je opravdu dobrý.</div>
              <div>Už tady někdo psal že dobrý zdroj je základ všeho.</div>
              <div>Před pár lety jsem vyvíjel přijímač pro rádiový
                orientační běh a vlastně díky mizernému zdroji jsem to
                nikdy nedotáhnul. Když jsem pak později přišel na to, že
                mi tam do toho pěkně in šuměl zdroj tak už nebyla chuť
                se s tím dál zabývat. Byl to tenhle kousek   </div>
              <div><br>
              </div>
              <div>( <a class="moz-txt-link-freetext" href="https://elektro.bazos.cz/inzerat/179078885/agilent.php">https://elektro.bazos.cz/inzerat/179078885/agilent.php</a>
                ) </div>
              <div>a nejspíš nebyl asi úplně v pořádku. Koupil jsem ho z
                firmy za mrzký  peníz, ale pak šel do světa.<br>
                <br>
                úterý 23. ledna 2024 Pavel Hudeček <<a class="moz-txt-link-freetext" href="mailto:edizon@seznam.cz">edizon@seznam.cz</a>>
                napsal(a):<br>
                <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
                  <div> No mě kdysi poněkud šokovalo, že ve zdroji
                    Agillent byly na výstupu C 1 mili:)<br>
                    A ano, byl to lineární zdroj.<br>
                    <br>
                    Zkoumáním schématu jsem zjistil, že má poměrně
                    pomalou regulační smyčku, aby šel provozovat s
                    dlouhou externí zpětnou vazbou. Ale ty C mi byly
                    prezentovaný jako primárně nízkošumové opatření. <br>
                    <br>
                    PH<br>
                    <br>
                    <div>Dne 23.01.2024 v 13:50 Jan Kuba napsal(a):<br>
                    </div>
                    <blockquote type="cite"> Ne, to napětí na výstupu
                      pomalu naběhne a bez překmitu.. prostě se rozjede
                      zdroj. Samozřejmě pokud někdo potom odpojí a
                      připojí drát tak tam ten kondenzátor udělá
                      proudovou špičku.
                      <div><br>
                      </div>
                      <div>Správný laboratorní zdroj na výstupu nemůže
                        mít žádnou kapacitu. U těch levných spínaných to
                        samozřejmě jinak udělat nejde než že tam nějaká
                        kapacita filtrační bude. U těch kvalitnějších je
                        lineární stabilizátor a opatření,aby ta
                        regulační smyčka nekmitala a zároveň byl zdroj
                        tvrdý.<br>
                        <br>
                        úterý 23. ledna 2024 Pavel Hudeček <<a class="moz-txt-link-freetext" href="mailto:edizon@seznam.cz">edizon@seznam.cz</a>>
                        napsal(a):<br>
                        <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
                          <div> Tlačítko zapne relátko, takže imulzní
                            proud bude stejnej.<br>
                            <br>
                            Ale u toho USB, pokud není správně vyřešeno
                            v zařízení, může vadit opalování kontaktů.<br>
                            <br>
                            Pak je ještě zajímavé, proč některé lab.
                            zdroje mají velké výstupní kapacity:<br>
                            1. Požadavek na luxusní šumové parametry<br>
                            2. Snaha zakrýt nekvalitní regulační smyčku<br>
                            <br>
                            PH<br>
                            <br>
                            <div>Dne 23.01.2024 v 12:31 Jan Kuba
                              napsal(a):<br>
                            </div>
                            <blockquote type="cite"> Ano, byť je myslím
                              červený vnitřek, je obyčejný.
                              <div>Ale nepředpokládám, že by si někdo
                                kupoval laboratorní zdroj a pak z něj
                                nabíjel mobil.<br>
                                <div><br>
                                </div>
                                <div>Na výstupu svorek  jsou zapojené
                                  elyty, takže i při proudovém omezení a
                                  připojení zátěže na dráty tam můze být
                                  proudový impulz.</div>
                                <div>Proto by se asi mělo používat to
                                  tlačítko pro připojení zátěže.<br>
                                  <br>
                                  úterý 23. ledna 2024 Zuffa Jan <<a class="moz-txt-link-freetext" href="mailto:ZuffaJ@cgc.sk">ZuffaJ@cgc.sk</a>>
                                  napsal(a):<br>
                                  <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
                                    <div lang="EN-US">
                                      <div>
                                        <p class="MsoNormal">Akurat ten
                                          USB fast charging je obycajny,
                                          telefon mi rychlo nenabije.</p>
                                        <p class="MsoNormal">Aspon som
                                          ho zatial nedonutil.</p>
                                        <p class="MsoNormal"> </p>
                                        <p class="MsoNormal">J</p>
                                        <p class="MsoNormal"> </p>
                                        <p class="MsoNormal"><b>From:</b>
                                          Hw-list <<a class="moz-txt-link-freetext" href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a>> <b>On
                                            Behalf Of </b>Jan Kuba<br>
                                          <b>Sent:</b> Sunday, January
                                          21, 2024 11:41 AM<br>
                                          <b>To:</b> HW-news <<a class="moz-txt-link-freetext" href="mailto:hw-list@list.hw.cz">hw-list@list.hw.cz</a>><br>
                                          <b>Subject:</b> Re:
                                          Laboratorní zdroj</p>
                                        <p class="MsoNormal"> </p>
                                        <div>
                                          <p class="MsoNormal">Také jsem
                                            koupil synovi podobný.
                                            WPS605H </p>
                                          <div>
                                            <p class="MsoNormal">Je to
                                              ten kousek, jak s ním na
                                              videu zkoušel maník
                                              přepětí pro hračky a
                                              někomu se tu v konvi
                                              líbil.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal"> <a class="moz-txt-link-freetext" href="https://www.aliexpress.com/item/1005006014921367.html">https://www.aliexpress.com/item/1005006014921367.html</a> 
                                              Byl 11.11.  okolo 1200kč s
                                              poštovným</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal"> </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Mě se
                                              moc líbí ( i proto že
                                              vůbec neruší - ham věci co
                                              jsem testoval ) tak jsem
                                              si ještě pro sebe objednal
                                              WPS3010H  ( verze 30V/10A
                                              ) </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Uvnitř
                                              je to hezky čistě udělané.
                                              Točítka na U,I jsou
                                              inkrementální což se mi
                                              narozdíl od aripotů líbí,
                                              neboť jde rychle udělat
                                              změna napětí, proudu.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">(
                                              Stiskem se přepíná digit
                                              ) </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Je
                                              jasné, že to asi nebude
                                              dosahovat kvalit nějakých
                                              profi lab. zdrojů, ale
                                              jako lehký zdroj na
                                              přenášení je to výborné.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Po
                                              zapnutí zdroje  ( síťový
                                              isostat ) se na výstupu
                                              objeví malinká jehlička
                                              asi 7V. </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal"> </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Při
                                              vypínání a zapínání tím SW
                                              tlačítkem je to ale  je to
                                              v pořádku. Ale po zapnutí
                                              tím síťovým</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal"> 
                                              isostatem se ještě musí
                                              zapnout výstup tím
                                              tlačítkem, na to
                                              zapomínám. </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal"> </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Chybí
                                              mi nahoře nějaké poutko,
                                              aby se to dalo dobře
                                              čapnout, nebo pověsit
                                              třeba k racku.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Když se
                                              to zatíží, rozjede se
                                              interní fan naplno, nemá
                                              to žádnou proporcionální
                                              regulaci.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal"> </p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Za ty
                                              peníze nemá smysl v tomto
                                              základním segmentu zdrojů
                                              cokoliv bastlit.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Mám
                                              ještě YIHUA 3010 ale ten
                                              strašně šumí a je to asi
                                              to nejhorší co mám a je v
                                              garáži na nabíjení
                                              baterek.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal"> A pak
                                              těžký ( možná 10kg )
                                              lineární zdroj  Instek GPS
                                              4303 ale ten má pevné
                                              místo na stole.</p>
                                          </div>
                                          <div>
                                            <p class="MsoNormal">Tesla
                                              BS554 ( doplněná 3,5 LCD
                                              kvůli dual měření ) bzučí
                                              trafo, a duální BS525 má
                                              jednu půlku vadnou a není
                                              živáčka, co by to opravil.</p>
                                          </div>
                                          <div>
                                            <div>
                                              <p class="MsoNormal"> </p>
                                            </div>
                                          </div>
                                        </div>
                                        <div>
                                          <p class="MsoNormal"> </p>
                                          <table border="1" cellpadding="0" style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(211,212,222)">
                                            <tbody>
                                              <tr>
                                                <td width="55" style="width:41.25pt;border:none;padding:9.75pt 0.75pt 0.75pt">
                                                  <p class="MsoNormal"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail"><span style="text-decoration:none"><img border="0" height="29" width="46" style="width: 0.4791in; height: 0.302in;" src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" onmouseover="imageMousePointerUpdate(true)" onmouseout="imageMousePointerUpdate(false)"></span></a></p>
                                                </td>
                                                <td width="470" style="width:352.5pt;border:none;padding:9pt 0.75pt 0.75pt">
                                                  <p class="MsoNormal" style="line-height:13.5pt"><span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(65,66,78)">Neobsahuje
                                                      žádné viry.<a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail"><span style="color:rgb(68,83,234)">www.avast.com</span></a></span></p>
                                                </td>
                                              </tr>
                                            </tbody>
                                          </table>
                                        </div>
                                        <p class="MsoNormal"> </p>
                                        <div>
                                          <div>
                                            <p class="MsoNormal">čt 18.
                                              1. 2024 v 16:57 odesílatel
                                              Zuffa Jan <<a class="moz-txt-link-freetext" href="mailto:ZuffaJ@cgc.sk">ZuffaJ@cgc.sk</a>> napsal:</p>
                                          </div>
                                          <blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in">
                                            <div>
                                              <div>
                                                <div>
                                                  <p class="MsoNormal">DD,</p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal">Ja
                                                    som kupil minuly
                                                    mesiac toto:</p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal"><a href="https://vi.aliexpress.com/item/1005005418678378.html?spm=a2g0o.order_list.order_list_main.29.68371802XZq9hv&gatewayAdapt=glo2vnm">https://vi.aliexpress.com/item/1005005418678378.html?spm=a2g0o.order_list.order_list_main.29.68371802XZq9hv&gatewayAdapt=glo2vnm</a></p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal">Po
                                                    zapnuti je potrebne
                                                    vystup aktivovat, co
                                                    mi vadi je ze sa
                                                    neda trvalo vypnut
                                                    pipak</p>
                                                  <p class="MsoNormal">(po
                                                    vypnuti opat pipa) a
                                                    ventilator bud ide
                                                    naplno alebo vobec.</p>
                                                  <p class="MsoNormal">Takze
                                                    zatial spokojnost.</p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal">Este
                                                    som natrafil a
                                                    objednal tento:</p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal"><a href="https://vi.aliexpress.com/item/4000092785116.html?spm=a2g0o.order_list.order_list_main.11.68371802XZq9hv&gatewayAdapt=glo2vnm">https://vi.aliexpress.com/item/4000092785116.html?spm=a2g0o.order_list.order_list_main.11.68371802XZq9hv&gatewayAdapt=glo2vnm</a></p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal">Ten
                                                    je bez aktivneho
                                                    chladenia ale da iba
                                                    30V/5A ale je este
                                                    mensi ako ten prvy
                                                    tak ked pride
                                                    potestujem a
                                                    zreferujem</p>
                                                  <p class="MsoNormal">A
                                                    tie ceny sa na ali
                                                    dost menia v
                                                    pondelok som ho
                                                    objednal za 61 a
                                                    dnes je uz za 57 +-
                                                    drobne</p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal">j.</p>
                                                  <p class="MsoNormal"> </p>
                                                  <p class="MsoNormal"><b>From:</b>
                                                    Hw-list <<a class="moz-txt-link-freetext" href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a>> <b>On
                                                      Behalf Of </b>Jirka
                                                    Mww<br>
                                                    <b>Sent:</b>
                                                    Thursday, January
                                                    18, 2024 4:16 PM<br>
                                                    <b>To:</b> HW-news
                                                    <<a class="moz-txt-link-freetext" href="mailto:hw-list@list.hw.cz">hw-list@list.hw.cz</a>><br>
                                                    <b>Subject:</b> Re:
                                                    Laboratorní zdroj</p>
                                                  <p class="MsoNormal"> </p>
                                                  <div>
                                                    <p class="MsoNormal">Já
                                                      mám jen 
                                                      stabilizovaný
                                                      zdroj ARITMA TSZ
                                                      75 , má dva
                                                      regulované výstupy
                                                      0-30 V 200 mA - 
                                                      2A, pak
                                                      neregulované 2 x
                                                      15V 1A a 5V 2A. 
                                                      Žádný
                                                      mikroprocesor, jen
                                                      součástky  TESLA: 
                                                      Když něco odejde,
                                                      opravím to,
                                                      schemata mám,
                                                      součástky jsou
                                                      volně dostupné,
                                                      žádné SMD (((:::</p>
                                                    <div>
                                                      <p class="MsoNormal">Jen samá pozitiva.   Ještě mám  zdroj TESLA BS225 , 2
                                                        x 0-30 V 0-1A, 
                                                         A ze silnějších
                                                        nějaký německý 
                                                        přepínatelný 
                                                        28V / 48V/60V 
                                                        30A   a nakonec
                                                        jeden napájený
                                                        3fázově ze  3 x
                                                        400V  s
                                                        výstupem 
                                                        50V/50A.  Jeho
                                                        použití teprve
                                                        plánuju, zatím
                                                        takový vysílač ,
                                                        ke kterému by se
                                                        hodil, nemám
                                                        ((::.  </p>
                                                    </div>
                                                    <div>
                                                      <p class="MsoNormal"><br clear="all">
                                                      </p>
                                                      <div>
                                                        <div>
                                                          <p class="MsoNormal">Zdravi<br>
                                                          Jirka
                                                          Sloupenský
                                                           OK1MWW</p>
                                                        </div>
                                                      </div>
                                                      <p class="MsoNormal"> </p>
                                                    </div>
                                                  </div>
                                                  <div>
                                                    <p class="MsoNormal"> </p>
                                                    <table border="1" cellpadding="0" style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(211,212,222)">
                                                      <tbody>
                                                        <tr>
                                                          <td width="55" style="width:41.25pt;border:none;padding:9.75pt 0.75pt 0.75pt">
                                                          <p class="MsoNormal"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail"><span style="text-decoration:none"><img border="0" height="29" width="46" style="width: 0.4791in; height: 0.302in;" src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" onmouseover="imageMousePointerUpdate(true)" onmouseout="imageMousePointerUpdate(false)"></span></a></p>
                                                          </td>
                                                          <td width="470" style="width:352.5pt;border:none;padding:9pt 0.75pt 0.75pt">
                                                          <p class="MsoNormal" style="line-height:13.5pt"> <span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(65,66,78)">Neobsahuje
                                                          žádné viry.<a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail"><span style="color:rgb(68,83,234)">www.avast.com</span></a></span></p>
                                                          </td>
                                                        </tr>
                                                      </tbody>
                                                    </table>
                                                  </div>
                                                  <p class="MsoNormal"> </p>
                                                  <div>
                                                    <div>
                                                      <p class="MsoNormal">čt 18. 1. 2024 v 15:28 odesílatel Pavel Hudeček <<a class="moz-txt-link-freetext" href="mailto:edizon@seznam.cz">edizon@seznam.cz</a>> napsal:</p>
                                                    </div>
                                                    <blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt">
                                                      <div>
                                                        <p class="MsoNormal" style="margin-bottom:12pt">Tohle je v podstatě problém
                                                          všech zdrojů,
                                                          které nemají
                                                          dobré vypínání
                                                          výstupu. Tzn.
                                                          <b>nebrat</b>
                                                          zdroje, které:<br>
                                                          1. Nemají
                                                          skutečné
                                                          vypínání
                                                          výstupu, tedy
                                                          nemají stav,
                                                          kdy zdroj
                                                          běží, má na
                                                          výstupu
                                                          nastavené
                                                          napětí, ale to
                                                          tam nejde,
                                                          protože je
                                                          odpojený od
                                                          výstupních
                                                          svorek.<br>
                                                          2. Vypínání
                                                          výstupu přímo
                                                          mechanickým
                                                          vypínačem,
                                                          protože když
                                                          bude výstup
                                                          mechanicky
                                                          zaplý před
                                                          zapnutím
                                                          napájení...<br>
                                                          <br>
                                                          Takže naopak
                                                          co mít musí:<br>
                                                          1. Nějaký
                                                          čudlík, kterým
                                                          jde
                                                          zapnout/vypnout
                                                          výstup na
                                                          zaplém zdroji.<br>
                                                          2. Buď musí
                                                          být výchozí
                                                          stav vypnuto,
                                                          nebo obnovení
                                                          stavu po
                                                          zapnutí
                                                          napájení musí
                                                          mít zpoždění,
                                                          třeba než
                                                          naběhne řídící
                                                          počítač, nebo
                                                          nejlíp po té,
                                                          co ověří, že
                                                          je tam co je
                                                          nastaveno.<br>
                                                          <br>
                                                          Výsledkem je,
                                                          že pokud
                                                          "hloupej"
                                                          zdroj, tak
                                                          pokud možno
                                                          jen takovej,
                                                          co je až tak
                                                          hloupej že si
                                                          nepamatuje
                                                          stav zapnutí
                                                          výstupu a má
                                                          ho vždy na
                                                          začátku
                                                          vyplej. A
                                                          pokud chytrej,
                                                          tak je to
                                                          skoro jedno.<br>
                                                          <br>
                                                          (Ale teda taky
                                                          aby chytrej
                                                          nebyl k vzteku
                                                          a neměl třeba
                                                          jedno
                                                          kroutítko na U
                                                          a I na dvou
                                                          kanálech. U
                                                          chytrejch je
                                                          prostě vždy
                                                          potřeba předem
                                                          prozkoumat
                                                          návod.)<br>
                                                          <br>
                                                          PH</p>
                                                        <div>
                                                          <p class="MsoNormal">Dne 18.01.2024 v 12:34 Petr Zapadlo napsal(a):</p>
                                                        </div>
                                                        <blockquote style="margin-top:5pt;margin-bottom:5pt">
                                                          <p class="MsoNormal">Zdravím, <br>
                                                          <br>
                                                          tak jsem včera
                                                          zjistil velmi
                                                          nemilou věc -
                                                          můj stávající
                                                          zdroj udělaný
                                                          ze dvou modulů
                                                          podobných
                                                          tomuto: <br>
                                                          <br>
                                                          <a class="moz-txt-link-freetext" href="https://vi.aliexpress.com/item/1005006027316353.html">https://vi.aliexpress.com/item/1005006027316353.html</a>
                                                          a zdroje na
                                                          DIN lištu, tak
                                                          při zapnutí
                                                          krátce vyletí
                                                          na >10V bez
                                                          ohledu na to
                                                          co je
                                                          nastaveno.
                                                          (Při studeném
                                                          startu, pokud
                                                          se to zapne
                                                          čudlíkem na
                                                          modulu, tak je
                                                          vše OK).
                                                          Zjistil jsem
                                                          to samozřejmě
                                                          až po té co se
                                                          mi začoudilo z
                                                          wifi modulu 
                                                          realtek
                                                          rtl87xx. <br>
                                                          <br>
                                                          Tím se
                                                          vysvětlilo
                                                          několik
                                                          předchozích
                                                          příhod. <br>
                                                          <br>
                                                          A teď k tomu
                                                          nejdůležitějšímu 
                                                          - potřebuji
                                                          použitelný
                                                          laboratorní
                                                          zdroj. Ideálně
                                                          2 kanály.
                                                          Nemusí být
                                                          nijak
                                                          programovatelný.
                                                          <br>
                                                          <br>
                                                          V historii
                                                          konference
                                                          jsem našel
                                                          nedoporučení
                                                          na
                                                          SPS3010-2KD.
                                                          Předpokládám,
                                                          že vytknuté
                                                          vady se budou
                                                          týkat i
                                                          odvozených
                                                          modelů např
                                                          SPS305-2KD
                                                          (jen 5A). 
                                                          Požadavek je
                                                          poměrně
                                                          jednoduchý -
                                                          30V/5A mi
                                                          stačí. Duální
                                                          provedení by
                                                          bylo super.
                                                          Ale ja kse
                                                          dívám na 
                                                          Alim, duálních
                                                          zdrojů je tam
                                                          jak šafránu. 
                                                          Single zdrojů
                                                          je tam poměrně
                                                          hodně. Nicméně
                                                          parametry
                                                          budou naprostá
                                                          loterie. <br>
                                                          <br>
                                                          Máte nějakou
                                                          konkrétní
                                                          zkušenost? 
                                                          Jsem poměrně
                                                          nenáročný,
                                                          nicméně
                                                          logické
                                                          ovládání je
                                                          velké plus a
                                                          taky možnost
                                                          rychle vypnout
                                                          daný kanál -
                                                          to pokud vím
                                                          nemá například
                                                          ten SPS... </p>
                                                        </blockquote>
                                                      </div>
                                                    </blockquote>
                                                  </div>
                                                </div>
                                              </div>
                                            </div>
                                          </blockquote>
                                        </div>
                                      </div>
                                    </div>
                                  </blockquote>
                                </div>
                              </div>
                            </blockquote>
                          </div>
                        </blockquote>
                      </div>
                    </blockquote>
                  </div>
                </blockquote>
              </div>
            </blockquote>
          </div>
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          HW-list mailing list  -  sponsored by <a href="http://www.HW.cz" rel="noreferrer">www.HW.cz</a><br>
          <a class="moz-txt-link-freetext" href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a><br>
          <a class="moz-txt-link-freetext" href="http://list.hw.cz/mailman/listinfo/hw-list" rel="noreferrer">http://list.hw.cz/mailman/listinfo/hw-list</a><br>
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      <br>
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      <pre wrap="" class="moz-quote-pre">_______________________________________________
HW-list mailing list  -  sponsored by <a href="http://www.HW.cz" class="moz-txt-link-abbreviated">www.HW.cz</a>
<a href="mailto:Hw-list@list.hw.cz" class="moz-txt-link-abbreviated">Hw-list@list.hw.cz</a>
<a href="http://list.hw.cz/mailman/listinfo/hw-list" class="moz-txt-link-freetext">http://list.hw.cz/mailman/listinfo/hw-list</a>
</pre>
    </blockquote>
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