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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=CS link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Ale my se nebavíme o šumu odporu R1 ale o šumu odporů R11 a R12 s hodnotami 220k a 1M jejichž šum už hente prdítko nejspíš odměří </span><span style='font-family:Wingdings;color:#1F497D'>J</span><span style='color:#1F497D'>. Moje chyba kdy jsem osadil na místo R1 50k místo 50 ohmů způsobila to že byl vstup převodníku na vysoké impedanci takže chytal všechny šumy a rušení z okolí. Já to ale chybně přičítal vlivu R11 a R12 a proto jsem blbnul s těmi drahými odpory.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> Martin.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Hw-list [mailto:hw-list-bounces@list.hw.cz] <b>On Behalf Of </b>Daniel Valuch<br><b>Sent:</b> Tuesday, November 6, 2018 4:34 PM<br><b>To:</b> HW-news<br><b>Subject:</b> Re: RF detektor<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>sumovy vykon pri izbovej teplote a 500MHz sirke pasma je okolo -87dBm. To hento prditko este neodmera, dynamicky rozsah tam zacina niekde na -70dBm a vyssie.<br>Problem bol zrejme niekde inde :-)<br><br><br>On 06/11/2018 16:25, Zuffa Jan wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span style='color:#1F497D'>Ano, </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>ale vykon v dBm ostava rovnaky cize</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>ten merak by mal vlastne ukazovat spravne :)</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>j.</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Daniel Valuch [<a href="mailto:balu@k-net.fr">mailto:balu@k-net.fr</a>] <br><b>Sent:</b> Tuesday, November 06, 2018 4:21 PM<br><b>To:</b> HW-news; Zuffa Jan<br><b>Subject:</b> Re: RF detektor</span><o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><div><p class=MsoNormal>ale hej, podla kTRB sumi 50k rezistor 1000x viacej ako 50R :-)<br><br><br>On 06/11/2018 15:56, Zuffa Jan wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span style='color:#1F497D'>Ale rozdiel o dva rady 2uV vs 200uV nemoze byt dany sumovymi vlastnostami odporu.</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Tu pojde pravdepodobne o nejake spatne vazby alebo skor pravdepodobne nevhodne</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>navrhnute rozlozenie zemniacych sluciek na dps. U takto nizkych urovniach je pouzitie</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>4 vrstvych dps nutnost. Ale pristroj Vam funguje k plnej spokojnosti a to je to najdolezitejsie :)</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>j.</span><o:p></o:p></p></blockquote></blockquote><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p></div></body></html>