Izolirano napajanje za LCD DVM

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BORDER="0" SRC="Symb075c00b700f0ff000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Izolirano napajanje za LCD DVM</B></div> <bR> </td> <td valign="top" height=400 BGCOLOR="#FFFFFF" TEXT="#080000"> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2650537455752702" crossorigin="anonymous"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-2650537455752702" data-ad-slot="7117608876" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <bR> <bR> <div> <B><IMG SRC="a3222570.gif" border=0 width="546" height="343" ALT="Izolirano napajanje 30..50VDC/8VDC-1mA za LCD DVM" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> <div>       Prikazani sklop riješava izolirano napajanje LCD digitalnog voltmetra (9V, 350uA). Primjer upotrebe je mjerenje napona akumulatora od 36V. Napanje LCD DVM-a trebaju biti izolirano od minus pola napajanja. Obavezno treba staviti 100nF između -ulaza i  -napajanja LCD DVM-a. Bez toga smetnje izazivaju pogrešno mjerenje.</div> <bR> <div>     Upotrebljeni trafo je Bourns 1:1 600 ohma za telekomunikacijsku upotrebu. Sklop radi na 13kHz. Zener diode 9,1V se trebaju staviti samo ako je potrošnja manja od 200uA.</div> <bR> <div>      </div> </td> </tr></table></body>