The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 1997
Filed:
Mar. 02, 1995
Kim I McCavit, St. Joseph, MI (US);
Bradford B Jensen, Berrien Springs, MI (US);
Heath Company, Benton Harbor, MI (US);
Abstract
A DC power supply for an electronic switching element connected in series with a load in an AC main has a rectifying element and a capacitor parallel to the electronic switching element. Charging of the capacitor is provided by opening the switching element and diverting current from the AC main through the rectifying element and capacitor. The voltage difference across the capacitor powers control circuitry for the electronic switching element. Hysteresis built into the control circuitry results in the electronic switching element opening at a lower voltage difference across the capacitor than the voltage difference required to close the electronic switching element.