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. 10, 2012
Filed:
Aug. 27, 2009
Chi Ping Sun, Hong Kong, CN;
Jian Qun Wu, Shenzhen, CN;
Hai BO Jiang, Shenzhen, CN;
Jian Han, Shenzhen, CN;
Chi Ping Sun, Hong Kong, CN;
Jian Qun Wu, Shenzhen, CN;
Hai Bo Jiang, Shenzhen, CN;
Jian Han, Shenzhen, CN;
Johnson Electric S.A., La Chaux-de-Fonds, CH;
Abstract
A drive circuit comprising: a direct current power source; a control unit for supplying control signals; a power switch topology comprising a first switch and a second switch each having an input terminal, an output terminal, and a control terminal, the input terminals being respectively connected to the power source, the control terminals being connected to the control unit for receiving the control signals there from, the output terminals being connected to a node; and an inductance connected with a capacitive load in series between the node and the power source, wherein the control signals control the switches to alternately conduct to thereby cause the node to output a pulse signal.