We found this circuit in the February 1987 issue of Radio Electronics magazine. It is based on an integrated RCA triac trigger available at the time. The circuit powers 4 incandescent lamps.
This circuit uses a JFET CA3140 operational amplifier to convert a low frequency sinusoidal signal...
This circuit was found in a 90’s Electronic Engineering. The signal is sinusoidal with the...
This simple circuit indicates whether at a point in the wiring of a car 12 V is present. The clip...