Sensitive triac controller (CB7864E)

This circuit, which can be used as a shield, was found in a 90s Electronic Design. The circuit uses a diac and the transistor can be general-purpose.

| Clique na imagem para ampliar |

Three Phase Protection (CB4342E)
This 1989 circuit activates a protection relay if one or two phases are missing from a three-phase...
Electronic Dice (CB24370E)
This simple TTL electronic dice uses common anode displays. The circuit is from a March 1975 Radio...
Event Missing Alarm (CB18649E)
This non-pulse alarm can be used as an event detector or even an alarm. The circuit can also be...