Method and apparatus to improve the performance of AC solenoid d

Details Method and apparatus to improve the performance of AC solenoid d Method and apparatus to improve the performance of AC solenoid d

1996-03-27

1998-03-31

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361187, H01H 4732

Patent

active

057345430

ABSTRACT:
A solenoid device, for example in an electrical contactor system, is provided for use with an alternating current power source. An electrical contactor includes an electromagnetic coil assembly configured to generate a non-zero effective magnetic force in response to an alternating current signal applied across the coil assembly. A switch proximate the coil assembly is configured to operate responsively to the effective magnetic force. A wave shaping device is configured to introduce a direct current component to an alternating current signal provided by the alternating current power source and to output at least part of the alternating current signal modified by the direct current component across the coil assembly.

REFERENCES:
patent: 4356526 (1982-10-01), Russell
patent: 4368499 (1983-01-01), Stifter
patent: 4412267 (1983-10-01), Hansen
patent: 4415943 (1983-11-01), Wortman

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