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 circuit shown in the figure is quite interesting in control and alarm applications. This...
This small preamp for low impedance microphones was found in a Popular Electronics from November 1968....
July 2017 - The new Mean Well ENC-360 360 W battery chargers suitable for motorcycle battery...