This circuit was found in old American documentation. Transistor is general purpose and coil rated is for 1.5 MHz. Wind 50 + 50 turns of wire 28 onto ferrite rod for 1 MHz.
This battery charger was found in the Electronics Experimenter Special Projects of 1983. The...
This circuit is from an English magazine of 1974, but can still be assembled with the replacement of...
Motors up to 2 A DC can be controlled by this circuit that we find in the manual for linear...