[sdiy] Blocking audio at power off

Roy J. Tellason rtellason at verizon.net
Tue Sep 9 18:04:04 CEST 2008


On Monday 08 September 2008 09:46, Justin Owen wrote:
> Hey all,
>
> Probably hoping for too much here - but what's the absolute simplest way of
> blocking an audio signal through a circuit when it is powered down.
>
> I'm getting signal from the audio input of a circuit going through a
> transistor straight to the output after I've turned it 'off'.
>
> When I say simple - I mean simpler than adding another transistor set up as
> a switch, an IC or a hardware switch...
>
> ...any such thing exist?

Feed the audio through a relay,  when power to the coil goes away,  the 
contacts open...

-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin



More information about the Synth-diy mailing list