Triac activated switch (CB9088E)

This circuit is from an 80's Radio Electronics. It triggers a load powered by the power grid from the audio signal captured by the microphone.

| Clique na imagem para ampliar |

Triangular signal generator (CB7596E)
Found in Popular Electronics from the 90s, this generator uses integrated circuits from that time....
Power indicator (CB7255E)
Indicated by Popular Electronics to be used with a car headlight, this circuit can also have...
Precision High Voltage Regulator (CB5878E)
This circuit is from the LM317's own manual obtained from an old documentation. The IC should be...