The purpose of this circuit based on Maxim's MAX9022 is to find faults in multiple cables. The circuit provides an audible signal on a buzzer being powered by 3 small or AAA batteries.
Found in a 1969’s Electronic Design, this circuit operates in a narrow range of voltages....
This power stage with two counterphase transistors and coupling transformers was shown in Radio...
Found in old documentation, this circuit uses special discharge lamps (neon) of the time. The...