[sdiy] Voltage regulator weirdness
Peter Ullrich
synpro at networld.at
Mon Aug 23 09:49:42 CEST 2004
Ciao
Peter
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Ing. Peter Ullrich
Hardware & Software Developer / Electronic Musician
Private Homepage: http://www.ullrich.at.tt
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Zitat von Sudhu Tewari <loopstick at hotmail.com>:
> Anyone have an idea why my little dual supply circuit is acting funny?
>
> I split 30V into +/-15V using 78/7915 regulators. The 7915/neg side works
> fine, but the positive supply drops from 15v to 13v after a few seconds of
> power. I've disconnected almost all the filter caps which helped keep 15v
> for a few more seconds, but it still drops to 13v.
>
> Any ideas? IC aint getting hot, it's kinda heatsunk.... I'm baffled..
>
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