This circuit operates with frequencies from 0.5 to 400 MHz. We find it in a 90’s NASA documentation. The transistors are from that time.
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...