This amplifier circuit with two transistors was found in a Mullard transistor manual from 1960. The circuit has a maximum output current of 1.3 A.
This simple 555 biofeedback circuit was found in the December 1983 issue of Radio Electronics...
Found in a 1969 EDN, this high current circuit, not indicated in the documentation, uses...
This tester for common unijunction transistors is nothing more than a low frequency oscillator...