We found this multiple thermostat circuit in July 1980 Radio Electronics magazine. It uses opto-triacs for power control and operates on a 117 VAC mains.
We found this circuit in a 1973 publication. The circuit lets frequencies below 480 kHz pass...
This power supply was originally indicated for work with electroplating. The transformer is 2 A or...
This simple circuit serves to identify the terminals of a PNP transistor. For NPN transistors, just invert...