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:
Jan. 13, 2004
Filed:
May. 22, 2002
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/24 ; H02M 7/5387 ;
U.S. Cl.
CPC ...
H02M 3/24 ; H02M 7/5387 ;
Abstract
A driving system of a bridge circuit for driving an inductance load turns OFF one of switching elements on either an upper arm connected to a power supply or a lower arm connected to a ground and turns ON the other one of the switching elements on the same arm when a pulse width modulation signal is OFF when a phase difference occurs between an electric current of a control signal with a sine wave and a voltage and when a polarity of the electric current differs from a polarity of the voltage, wherein the electric current is circulated via the other one of the switching elements, the flywheel diode connected to the one of the switching elements, and the inductance load.