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<p class=MsoNormal><span style='color:#1F497D'>Ano, jde mi o kalibrační kondenzátor.
Dělám konstrukci z HW serveru s 89C2051.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Kdybych si to měl čím změřit,
tak si ho vyberu, ale to bych si pak nestavěl LC metr že.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>A.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'> Jiří
Reček [mailto:recek.jiri@quick.cz] <br>
<b>Sent:</b> Wednesday, November 29, 2006 2:02 PM<br>
<b>To:</b> HW-news<br>
<b>Subject:</b> Re: Presná kapacita<o:p></o:p></span></p>
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</div>
<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Asi
nebude tak zle. Přesně musí být jen ten kalibrační kondenzátor a cívka může být
plus mínus autobus (raději plus) jestli se nemýlím. Asi podle toho, jaký LCmetr
děláte?</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Jirka</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message ----- <o:p></o:p></span></p>
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<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'> <a href="mailto:HorkyA@penam.cz"
title="HorkyA@penam.cz">Horký Aleš</a> <o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:hw-list@list.hw.cz" title="hw-list@list.hw.cz">HW-news</a> <o:p></o:p></span></p>
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<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Wednesday, November
29, 2006 9:41 AM<o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> RE: Presná kapacita<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='color:#1F497D'>Jo, měřák má autokalibraci na známou
kapacitu/známou indukčnost. Tudíž potřebuji tu známou kapacitu/indukčnost
mít. V procesoru<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>je nastavena právě kapacita 1nF
a indukčnost 150uH. <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'>A.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'> Danhard
[mailto:danhard@volny.cz] <br>
<b>Sent:</b> Wednesday, November 29, 2006 9:23 AM<br>
<b>To:</b> HW-news<br>
<b>Subject:</b> Re: Presná kapacita<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> 1nF
relativne presne neni az tak problem, kapacity montaze jsou ale v
jednotkach pF, z toho duvodu je nejakych presnych 7pF nesmysl.</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Take
presna indukcnost 150uH je nesmysl, jelikoz kazda indukcnost ma rusive
vlasnosti, ktere se projevuji vice a v mnohem mensim pouzitelnem frekvencnim
pasmu nez u kondenzatoru. Pro nizke frekvence dc odpor, pro vysoke
vlastni kapacita a vsude frekvencne zavisla nelineariata a ztraty zpusobene
feromagnetickym jadrem.</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>U
takoveho priblizneho meraku, je lepsi kdyz umi autokalibraci se soucastkami s
beznou toleranci.</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Danhard</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal>Dobrý den vsichni.<o:p></o:p></p>
<p class=MsoNormal>Do LC metru bych potřeboval sehnat 1 ks co nejpresnejsich
kondenzatoru 1nF a 7pF a indukcnost 150uH. <o:p></o:p></p>
<p class=MsoNormal>standardne prodavane kapacity jsou ve velkem rozptylu a
jelikoz si teprve delam LC metr tak nemam jak<o:p></o:p></p>
<p class=MsoNormal>si hodnotu vybrat z vice kusu. Nemuzete někdo poradit?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Horky Ales<o:p></o:p></p>
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