Led Turn Signal
Sep 06
2010
2010
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I need a switch that turns on an LED when it detects a line mic level audio signal?
I have a device that switches audio and video (audio follow) but what I need are tally lights for the video signals. So what I need is a switch (no relays) that will turn on LEDs when it detects a signal from an audio generator. Then the LED will light up to corespond to the video signal.
Op-amps can be used as voltage comparators and switches. As soon as it detects a voltage larger than your specified threshold, it will allow current to flow to the LED.
So, look for basic op-amp circuits for current/voltage switches.
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