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:
Dec. 27, 2005
Filed:
Feb. 26, 2004
Junji Nagano, Kitakyushu, JP;
Kouji Murakami, Iizuka, JP;
Junji Nagano, Kitakyushu, JP;
Kouji Murakami, Iizuka, JP;
Mitsumi Electric Co., Ltd., Tokyo, JP;
Abstract
Disposed in a secondary side circuit and is connected to a constant voltage control circuit (), to an overcurrent detection circuit (), and to an overvoltage detection circuit (), a photocoupler control circuit () controls a photocoupler (IC) so as to feed a constant voltage detection control signal as a feedback signal back to a primary side circuit. The photocoupler control circuit () controls the photocoupler (IC) so as to turn it off when the photocoupler control circuit is supplied with at least one of an overcurrent detected signal and an overvoltage detected signal. A voltage detection circuit () makes a latch circuit () operate when the voltage detection circuit detects a voltage induced in an auxiliary winding (N) of a transformer with the photocoupler turned off, thereby making a switching operation of a switching type AC adapter circuit stop.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile