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. 16, 2012
Filed:
Apr. 21, 2010
Lung-yu Hung, Miao-Li Hsien, TW;
Sheng-hsiang Kung, Miao-Li Hsien, TW;
Shih-chuan Chen, Miao-Li Hsien, TW;
Chih-ming Lai, Miao-Li Hsien, TW;
Lung-Yu Hung, Miao-Li Hsien, TW;
Sheng-Hsiang Kung, Miao-Li Hsien, TW;
Shih-Chuan Chen, Miao-Li Hsien, TW;
Chih-Ming Lai, Miao-Li Hsien, TW;
Foxsemicon Integrated Technology, Inc., Chu-Nan, Miao-Li Hsien, TW;
Abstract
A discharge circuit includes an OC (Optical Coupler), a capacitor, an NPN-type transistor, and a discharge unit. The discharge circuit is parallel connected to a PFC (power factor corrector) circuit which includes a filter capacitor. The discharge unit has a MOSFET and a discharge resistor. A drain of the MOSFET is connected to a first terminal of the PFC circuit via the discharge resistor, a gate thereof is connected the anode of the capacitor, and a source thereof is connected to ground.