three-point switch

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Noun1.three-point switch - an electric switch that has three terminals; used to control a circuit from two different locations
electric switch, electrical switch, switch - control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit
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References in periodicals archive ?
Switch controllers (two-point switch and three-point switch controllers) are the examples of the controllers with nonlinear control law.
The switch control law can be implemented by a two-point switch or a three-point switch.
8) the automatic controller is built on the basis of a three-point switch with an integrator.