You searched for: “electric control
electric control
1. Any electrical device; such as, a switch or a potentiometer (a resistor with three terminals, the third being an adjustable center terminal; used to adjust voltages in radios and TV sets), which is used to vary a circuit parameter.
2. The control of a machine by electric switches, relays, rheostats, or a resistor designed to allow variation in resistance without breaking the electrical circuit of which it is a part.
3. The control of a machine or instrument by switches, relays, or rheostats, as contrasted with electronic control by electron tubes or by devices which do the work of electron tubes.
This entry is located in the following unit: electro-, electr-, electri- (page 7)