This 3-digit digital gauge was found in the July 1900 issue of Radio Electronics magazine. The circuit is based on the CA3161 and CA3162 A/D converters of the time.
The circuit is of the Motorola Linear Databook of 1990. The power source must be symmetrical and the...
We found this circuit in a 1967 RCA SCR manual. The circuit uses components from the era. The...
The transistors of this circuit may be the BC548 or BC549 and its power supply can be performed...