This circuit was found in a 1964 Electronic Design. The components are of the time, and modern equivalents can be used. Note the multi-emitter transistor.
With a boost transistor this circuit supplies currents up to 15 A. Equivalent transistors can be...
This circuit was found in a Motorola Manual of 1965. The circuit has neon lamps as trigger...
The LM109 integrated circuit has been manufactured by many semiconductor industries. The circuit...