Switch assembly, electric machine having the switch...

Details Switch assembly, electric machine having the switch... Switch assembly, electric machine having the switch...

2007-02-27

2007-02-27

Ip, Paul (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S805000, C318S812000

Reexamination Certificate

active

11081394

ABSTRACT:
A pump assembly for pumping a liquid and a method of controlling the pump assembly. The pump assembly includes a motor coupled to a pump, and an electronic switch assembly electrically connected to the motor to control the current through the motor. The electronic switch assembly includes an electronic switch, a generator that provides a substantially periodic pulsing signal, a circuit control configured to provide a second signal, and decision logic connected to the generator, the circuit control, and the electronic switch. The decision logic receives the periodic pulsing and second signals and generates a control signal that selectively controls the electronic switch based on the periodic pulsing and second signals.

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