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.
The purpose of the circuit shown in the figure, obtained from a 1972 documentation, is to delay the...
The circuit shown consists of a power stage for relay excitation. 2N3053 can be a BD135 and 2N406...
This circuit with 4 diodes was found in the July 1984 Radio Electronics magazine. The voltage of...