Document Type
Patent
Publication Date
3-31-1998
Patent Number
patent number 5734543
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.
Application Number
08/622758
Assignees
Clemson University (Clemson, SC)
Filing Date
1996-03-27
Primary/U.S. Class
361/154
Other/U.S. Class
361/187