This circuit uses a contactor having been found in a 1987 publication. More modern equivalent devices may be used. The circuit has neon indicator lamps.
This circuit is from an1966 General Electric documentation. The Triac can be equivalent to 6 A or...
Suggested by Amperex in 1968, this circuit is intended for hearing aids. The integrated circuit...
This circuit can be used with motors or resistive loads, such as heaters and incandescent lamps....