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 American documentation, this circuit aims to produce pulses of certain durations from smaller...
Found in an Electronic Design of 1965, this circuit consists of NOR gates and can be used in...
Found in documentation from the 1970s, this reducing regulator uses integrated circuits and...