This circuit was found in an Electronic Design from the 90s. The integrated circuit is the LT1016, a high-speed comparator of the time.
Obtained from a 1969 documentation, this circuit can operate at frequencies up to 500 Hz, counting up...
The coil of this receiver consists of 100 turns of wire 38 to 30 in a ferrite rod and the...
This excellent wireless microphone circuit for the varicap-modulated FM band came out in...