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:
Jul. 03, 2001
Filed:
Dec. 30, 1999
Antonino Milazzotto, Rodano, IT;
Mario Di Guardo, Gravina Di Catania, IT;
Antonino Cucuccio, Catania, IT;
Nicola Nicosia, Catania, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
Presented is a circuit device for driving an a.c. electric load, incorporating a rectifying bridge that has a first input connected to one terminal of the electric load and a second input connected to an outlet of an a.c. main supply. The rectifying bridge has output terminals connected to a power switch which is controlled by an electric signal. The circuit device has a circuit loop-back link connected in parallel to the electric load, and a second circuit loop-back link connected in parallel to the electric load. The first and second links are alternately activated by the positive and negative half-waves of the main supply when the switch is in its “off” state.