Switch that turns on when detected audio

[Wing Fong Wong]

I'm looking for switch that turns on my amp after detected an audio
signal.I recall seeing such a device in Silicon Chip or Electronics Australia
a long time ago. I can't for the life of me recall when it was or what mag
it was in.

Can anyone help me with this. Or even better, does anyone know of a
commercial product and whether it is more cost effective to build or buy.

--

Wing Wong.

 

[Ken Taylor]

"Wing Fong Wong" <wing@student.edu.au> wrote in message
news:d736jb$o71$2@enyo.uwa.edu.au...

I'm looking for switch that turns on my amp after detected an audio
signal.I recall seeing such a device in Silicon Chip or Electronics
Australia
a long time ago. I can't for the life of me recall when it was or what mag
it was in.

Can anyone help me with this. Or even better, does anyone know of a
commercial product and whether it is more cost effective to build or buy.

--

Wing Wong.

Search on "VOX" or "voice activated switch". I think both DSE and Jaycar
have a kit (well, in the good old days they did....).

Cheers.

Ken