<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">Ale na rozdiel od vsetkych ostatnych doporuceni to funguje :) </div><div dir="ltr"><br></div><div dir="ltr"><br><blockquote type="cite">On 5 Mar 2025, at 13:22, vladimir@hkfree.org wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 15 (filtered medium)"><style>@font-face { font-family: "Cambria Math"; }
@font-face { font-family: Calibri; }
@font-face { font-family: Aptos; }
p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif; }
a:link, span.MsoHyperlink { color: blue; text-decoration: underline; }
span.StylE-mailovZprvy21 { font-family: Calibri, sans-serif; color: windowtext; }
.MsoChpDefault { font-size: 10pt; }
@page WordSection1 { size: 612pt 792pt; margin: 70.85pt; }
div.WordSection1 { page: WordSection1; }</style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">To je dražší, než to Tiny SA </span><span style="font-size:11.0pt;font-family:"Segoe UI Emoji",sans-serif;mso-fareast-language:EN-US">😊</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Vladimír<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Hw-list <hw-list-bounces@list.hw.cz> <b>On Behalf Of </b>Jaroslav Meduna<br><b>Sent:</b> Wednesday, March 5, 2025 10:42 AM<br><b>To:</b> 'HW-news' <hw-list@list.hw.cz><br><b>Subject:</b> RE: Jak ochránit VF vstup?<o:p></o:p></span></p></div></div><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><a href="https://www.minicircuits.com/WebStore/Limiters.html">https://www.minicircuits.com/WebStore/Limiters.html</a><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p><p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">napriklad na Mouser:<o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><a href="https://cz.mouser.com/ProductDetail/Mini-Circuits/VLM-63-2W-S%2b?qs=hWgE7mdIu5SsPTT3lqlQ7Q%3D%3D">VLM-63-2W-S+ Mini-Circuits | Mouser Česká Republika</a><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Hw-list <<a href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a>> <b>On Behalf Of </b>Vláďa Anděl<br><b>Sent:</b> Wednesday, March 5, 2025 10:07 AM<br><b>To:</b> konfera <<a href="mailto:hw-list@list.hw.cz">hw-list@list.hw.cz</a>><br><b>Subject:</b> Jak ochránit VF vstup?<o:p></o:p></span></p></div></div><p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p><p><span lang="EN-GB" style="font-family:"Times New Roman",serif">Z Ali mi přišel tiny spectrum analyzer. Je to opravdu malinká krabička a abych na tom displeji něco přečet, musím si brát lepší brýle :-) Nejdřív jsem nadával, že to má spoustu funkcí a není k tomu návod, ale pak jsem kouknul na jejich web a všechno tam je. </span><span lang="EN-GB"><o:p></o:p></span></p><p><span lang="EN-GB" style="font-family:"Times New Roman",serif">V návodu píšou, že vstup (100 KHz až 1,5 GHz) snese max. 10dBm a stejnosměrných 10V. Je k tomu prutová anténa a u ní píšou dávat si velký pozor a o nic s tím neškrtnout. Čím se dá takový vstup ochránit? Dvě diody proti sobě, ale jaké? Snad všechny hodně rychlé diody jsou schottky a tady bych potřeboval, aby ta dioda do půl voltu pokud možno nevedla. Dvě ledky proti sobě? Ale ty asi budou mít velkou kapacitu. Nebo připojit na vstup třeba tenhle zesilovač </span><span lang="EN-GB"><o:p></o:p></span></p><p><span lang="EN-GB" style="font-family:"Times New Roman",serif"><a href="https://www.coolbe.cz/cs/products/63aad3dd62029e0142a4ad78">https://www.coolbe.cz/cs/products/63aad3dd62029e0142a4ad78</a> </span><span lang="EN-GB"><o:p></o:p></span></p><p><span lang="EN-GB" style="font-family:"Times New Roman",serif">a doufat, že kdyžtak odejde jen ten zesilovač?</span><span lang="EN-GB"><o:p></o:p></span></p><p><span lang="EN-GB" style="font-family:"Times New Roman",serif">Anděl</span><span lang="EN-GB"><o:p></o:p></span></p></div><span>_______________________________________________</span><br><span>HW-list mailing list - sponsored by www.HW.cz</span><br><span>Hw-list@list.hw.cz</span><br><span>http://list.hw.cz/mailman/listinfo/hw-list</span><br></div></blockquote></body></html>