Two-state sequential (CB6566E)

Found in a 1970 documentation, this SCR bistable can be implemented with modern equivalent SCRs. Observe the controlled loads.

| Clique na imagem para ampliar |

Triggered buzzer (CB8972E)
This circuit can be used as a shield as long as the power is supplied with voltage equal to that...
Three Transistors MW Radio (CB13970E)
This receiver is from an old English magazine from 1965. The transistors used are germanium, no...
11 Meter modulation indicator (CB5355E)
We found this circuit in an ancient American documentation. It can be adapted to operate in other...