[BC] Silence Sensor

[Kevin Tekel]

Glen Kippel wrote:
> That seems like a roundabout way to solve a problem.  Yes, I build
> things that have no commercial equivalent, but anyone can make a silence
> sensor if they have an amplifier with a bridging-impedance input;
rectify
> and filter the output using an appropriate RC network, and use the
> resulting voltage to control the base of a transistor that in turn
> controls a relay.  You can use a buzzer, bell, Sonalert, steam whistle
or
> whatever for an alarm.  Tie it to a status input on your remote control,
> even.  It's not that hard.  Just a little time-consuming.

With a buzzer, bell, steam whistle, and his vintage Coke machine, Paul
would be just a few more gadgets away from being able to operate his
station's studio building as a tourist trap.




 
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