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.

Galvanometer Amplifier (CB15844E)
This circuit can be used in bridge of sensitive measures. We found it in a documentation from the...
Interface SCR and Relay (CB12106E)
This interface was found in a Modern Electronics magazine from 1990. Although the circuit is...
Common base transformer stage (CB22223E)
Found in an old American documentation, this step has as input and output transformers coupling. Two...