This circuit was found in a 1967 General Electric documentation. The components are from that time. The load depends on the SCRs used.
The circuit shown in the figure consists of a low voltage dropout (LDO) regulator for 200 mA using...
Found in Popular Electronics from the 90s, this circuit can be used in tachometers. The integrated...
This high impedance circuit uses a 12 V lamp to test voltages in a car. We found it in a Popular...