This circuit is from a 1967 General Electric SCR manual. The capacitors are polyester and the inductor must have current according to the controlled load.
The circuit shown in the figure is suggested by Intersil (www.intersil.com) and makes use of the...
We found this version of the automotive tachometer in a 1980s publication. Variations from other...
The battery charger shown in the figure uses two 60 W incandescent bulbs in series to limit the...