We found this circuit in the January 1979 issue of Radio Electronics magazine. Components are still common today, with the 7106 display driver standing out.
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...