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.
This multiple power source, with two transformers was found in American documentation from the...
We found this transmitter circuit with a single chip in the Motorola Linear Databook of 1990. The...
This oscillator can use inverters or connected AND or NAND gates as such. The signal produced with...