This circuit supplies 5 V from two AA batteries. The output current is 4 mA, resulting in an 11 mA input current from the batteries. The circuit is from an old EDN.
Found in 1967 General Electric documentation, this circuit is intended for the control of...
We found this circuit in an English publication from 1980. It memorizes the peak of the input...
This 200-mW amplifier uses one of the first commercial power transistors. The circuit is from a...