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.

Audio generator CK722 (CB23659E)
This circuit is from a Radio Electronics from March 1960. The generator works with a 22.5 V...
Low Noise Gain 1000 Amplifier (CB4767E)
We find in a Radio Electronics of the 90s this low noise amplifier that makes use of an uncommon...
Noise Limiter (CB12005E)
In short wave receivers or in the recovery of signals from scratched discs this circuit can be...