This circuit, which can serve as a reference for restorations, was found in the October 1989 issue of Radio Electronics magazine. The circuit uses a 5-digit display and a dedicated integrated circuit.
This indicator with the integrated circuits CA3162E and 3161E was published in the July 1990 issue...
This Electronics Now circuit provides a signal when the voltage of a source drops below a...
This circuit for 1 kHz sinusoidal signals uses a common operational amplifier circuit and is...