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:
Oct. 21, 2008
Filed:
Sep. 20, 2007
Applicant:
Bertrand Rivet, Tours, FR;
Inventor:
Bertrand Rivet, Tours, FR;
Assignee:
STMicroelectronics S.A., Montrouge, FR;
Primary Examiner:
Int. Cl.
CPC ...
H02M 5/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit for controlling a switch to be controlled in unidirectional fashion while the voltage present thereacross is an A.C. Voltage, including circuitry for delaying the switch turning-on with respect to a zero crossing of the voltage thereacross, and circuitry for triggering the switch turning-off after its turning on, at the end of a predetermined time interval plus or minus an error time controlled by the duty cycle of the A.C. Voltage across the switch, in one or several previous periods. The control circuit applies to the forming of a rectifying circuit by the switch.