This circuit was found in American documentation from 1966, but it can be assembled with a modern equivalent transistor. The circuit is based on a mechanical tuning fork with a coil feedback system.
The signal injector illustrated in the figure uses a single integrated circuit and generates...
Motors up to 2 A DC can be controlled by this circuit that we find in the manual for linear...
Place the lamp on the ignition threshold via R2. Your approach causes it to light up. The secret is...