This circuit charges a battery to power a flashlight at night. The circuit is from an English publication from 1991.
The coil consists of 100 turns of wire 28 in a wooden or PVC tube from 2 cm to 2.5 cm in diameter with...
The circuit shown in the figure can drive a motor (or other type of load) for a time interval that...
This circuit is from a 1966 Motorola Field Effect Transistors Manual. The circuit makes use of...