This two-transistor circuit was found in a 1966 US documentation. The power transistors are of the time. The system is intended for cars with contact breaker.
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...