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<P> 17.8.2007, 23:11:09</P>
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<P>a co takle usetrit za soucastky na zapornou vetev zdroje a osadit LT1013 od chobotu ?</P>
<P><BR></P>
<P>S pozdravem Pavel</P>
<P> <A class=RVTS6 href="mailto:gatilo">mailto:gatilo</A> + zavinac + centrum.cz</P>
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<P>--</P>
<P>Halen napsal:</P>
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<P><SPAN class=RVTS8>Ano v záporné větvi. Viz tohle zapojení:</SPAN></P>
<P><A class=RVTS9 href="http://www.electronics-lab.com/projects/power/003/schem.gif">http://www.electronics-lab.com/projects/power/003/schem.gif</A></P>
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<P><SPAN class=RVTS8>D7 je ta 5.6V zenerka.</SPAN></P>
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<P><SPAN class=RVTS8>Honza J.</SPAN></P>
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<P><SPAN class=RVTS8>Jaroslav Lukesh napsal(a): </SPAN></P>
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<P><SPAN class=RVTS10>No, tak jsem asi něco nepochopil, ta zenerka je v záporné větvi?</SPAN></P>
<P><SPAN class=RVTS10>Přemýšlel jste o tom, dát tam tranzistory?</SPAN></P>
<P><SPAN class=RVTS11>----- Original Message ----- </SPAN></P>
<P><SPAN class=RVTS12>From:</SPAN><SPAN class=RVTS11> </SPAN><A class=RVTS13 href="mailto:halen@seznam.cz">Halen</A><SPAN class=RVTS11> </SPAN></P>
<P><SPAN class=RVTS12>To:</SPAN><SPAN class=RVTS11> </SPAN><A class=RVTS13 href="mailto:hw-list@list.hw.cz">HW-news</A><SPAN class=RVTS11> </SPAN></P>
<P><SPAN class=RVTS12>Sent:</SPAN><SPAN class=RVTS11> Friday, August 17, 2007 9:41 PM</SPAN></P>
<P><SPAN class=RVTS12>Subject:</SPAN><SPAN class=RVTS11> Re: UA741</SPAN></P>
<P><BR></P>
<P><SPAN class=RVTS14>Potřebuji je do regulovatelného zdroje. Napětí je právě bráno z 30V střídavých, po usměrnění cca 41.2V, ale musí se ještě připočíst 5.6V zenerka. Jinak by zdroj nefungoval od 0V. Celkem tedy cca 46.8V. OPA445 jsou tak drahé, že je nemohu použít.</SPAN></P>
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