Heating Control (CB21371E)

This circuit for powers up to 240 W was found in a 1967 RCA SCR manual. The SCR must be in accordance with the controlled load.

| Clique na imagem para ampliar |

Variable DC Power Supply (CB13381E)
This circuit is from a 1976 documentation. It provides a pulsating DC voltage that can be varied...
Narrow Band Notch Filter (CB19691E)
This high selectivity or high-Q filter can be implemented with almost any operational amplifier. The...
Shadow Alarm (CB24163E)
We found this circuit in the September 1971 issue of Radio Electronics magazine. The sensor is an...