Voice Activated Switch (CB5982E)

This 80's documentation circuit includes an amplifier of the era. Used integrated circuits are uncommon today but can be used equivalents.

| Clique na imagem para ampliar |

Monostable unijunction (CB6354E)
Suggested by Motorola in a 1980s publication, this circuit is insensitive to changes in bias...
Negative Transitions Diefferentiator (CB17505E)
This circuit applies to any common operational, the time constant for the given values being 22...
Electronic Switch (CB19920E)
The FET used can be an equivalent like the BF245 or MPF102 and the operational one also admits an...