1-minute delay with Triac (CB21406E)

We found this circuit in a 1965 General Electric manual. The controlled load depends on the Triac and the 100 uF capacitor delay time.

| Clique na imagem para ampliar |

Voltage Doubler (CB17076E)
This simple voltage doubler provides a continuous voltage at its output that is twice the peak...
Emergency light (CB7044E)
This circuit was obtained in an old Elektor and can be adapted to use white power LEDs. The...
Microphone Preamplifier (CB15118E)
This circuit was obtained in an Argentine publication from 1973. The original version uses...