We found this circuit in a 90s Popular Electronics. The circuit uses a pickup coil that consists of 100 to 200 turns of wire 28 around the cable to be monitored.
This 6-transistor Japanese radio from the 1960s used germanium transistors and had an output power...
The circuit presented is from a 1972 RCA technical documentation. The integrated circuit consists of a...
This is the name given to this small MW transmitter that can function as a wireless microphone. The...