PS blow out

[jhaible]

Some 7815 regulators need a minimum load. Try to connect a 1k resistor
at its output and see if the voltage goes back to 15V.
There's more about it in the archives.

JH.


----- Original Message -----
From: <RevTor at aol.com>
To: <synth-diy at mailhost.bpa.nl>
Sent: Thursday, March 02, 2000 10:35 PM
Subject: PS blow out


> Hey all,
>   My 15v PS currently resides on a wooden board for versatilitys sake
until
> my synth cabinet is finished.  Well, to make a long story short (no pun
> intended), I shorted it out (not sure what touched what).  The fuse wasn't
> installed yet because of the fact that the panel which I was going to
mount
> it on isn't done yet either.  So now the +15 7815 regulator gets very hot,
> and puts out over 17 volts.  The -15 rail is fine.  Is this a matter of
just
> replacing the 7815? Or is something else gone too?  (that fuse is going in
> this time definitely, and a cover for the thing too until I can enclose it
> properly.)
> Thanks for some answers,
> ~Steve
>
>