TTL pulse detector and indicator (CB22414E)

This TTL circuit with the 7400 serves as a pulse indicator. It must be supplied with a voltage of 5 V.

Programmable Attenuator (CB4915E)
This circuit was found in an American 1980s documentation. The integrated circuit used is uncommon...
792 or 592 Preamplifier (CB25470E)
We found this circuit in a Radio Electronics magazine from June 1992. The circuit has a power...
2 Transistor Signal Follower (CB18410E)
This simple audio and RF signal tracker was found in a Japanese publication in 1967. The...