Continuity tester (CB7386E)

This circuit was found in a Hands-On Electronics from the 90's. The FET can be any general purpose.

| Clique na imagem para ampliar |

Perforated tape reader (CB7417E)
Found in General Electric documentation from the 1980s, this high speed perforated tape reader...
Rocket launcher (CB7158E)
Found in 1980s Radio Electronics, this circuit triggers the ignition of a rocket after the...
PLL receiver for powergrid signals (CB9576E)
Based on a PLL 567, this circuit serves as a receiver for the CB9574E circuit. S tuning is done in R1...