The purpose of this circuit is to silence the hiss that exists between the stations on an FM receiver. The circuit was found in American documentation from the 1980s.
This simple circuit supplies a constant current to an LED from supplies that can vary between 6...
This circuit is used to measure the power of transmitters from 3 to 30 MHz with powers up to 100...
Found in Popular Electronics from the 90s, this circuit serves to indicate the output level of a...