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.

100 kHz and 1 MHz Frequency Standard (CB14797E)
We found this circuit in old American documentation. It can be implemented with more modern...
Automatic Headlight (CB17266E)
The purpose of this circuit is to control the high and low light of a car, detecting when a...
Remote Control Transmitter (CB18525E)
This powerful transmitter for the 27 MHz band was found in a Japanese publication from 1961. The...