Crude noise gate

[Edu Silva]

"nss at hevanet.com" escreveu:
> 
> I was wondering if anyone had a link to or ideas for a very simple
> noise gate.


Not so crude !! The link below will lead you to the DOD FX-30 noise
gate, with mod to use an external trigger.

http://home.att.net/~guitartech/dod_fx30.zip


> By the way... What do people use for power jacks on pedal type things
> which require bi-polar power? I've been using 1/4" stereo jacks for a
> long time, and a pile of burned out op-amps can tell you it's not the
> best idea!


Use diodes to prevent wrong polarity going into the circuit.


  (+ in)  ----------->|----- to circuit (+)

from                diodes
jack

  (- in)  -----------|<----- to circuit (-)


Old Rane audio modules used telephone connectors. Works fine, since you
don't need to connect/disconnect every day...

-- 
 
Edu Silva . ES2 Audio
Salvador  BA   Brazil
bahi0387 at terra.com.br
http://audiolist.cjb.net
.