High Power Alarm (CB20475E)

We found this circuit in a Popular Electronics from the 90's. The circuit uses three SCRs to trigger the loads.

Extended range power control (CB7935E)
This circuit was found in a General Electric documentation from 1965. The circuit is full wave for...
Null Detector (CB11550E)
We found this circuit in the Texas Instruments' Linear Circuits Applications. It uses an...
Operational Variable Astable (CB14827E)
In the presented circuit it is possible to vary the frequency of the rectangular signal produced. This...