This electronic rheostat with SCR was found in the June 1964 Radio Electronics magazine. The SCR may be a modern type and the 2W potentiometer may be 470 ohms.
This circuit was obtained from the July 1970 issue of Radio Electronics magazine. Zeners are power...
This circuit allows you to simulate an analog telephone line for the repair and testing of...
This small power amplifier makes use of an output transformer given its design time. In fact, the...