This circuit detects when an audio signal exceeds a certain level or even occurs due to an object falling, a door slamming or other. The circuit is from a Radio Electronics from January 1980.
This circuit is suggested by Motorola and makes use of a phototransistor with its own...
Found in a 90s Linear Technology documentation, this circuit supplies current to a load through a...
August 2016 - It can be obtained from Mouser Electronics the new clock buffers HMC7043 of Analog...