This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and the power transistor must be equipped with heat radiators.
In the figure we have the amplifier application in a NOR gate, with reference voltage equal to the...
Found in 1965 Radio Shack documentation, this circuit has a crystal phone output in the 14.8 kHz...
This oscillator or clock generator generates rectangular signals and frequencies up to 100 kHz....