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. 08, 2009
Filed:
Jun. 15, 2007
Eito Moromizato, Nagaokakyo, JP;
Eito Moromizato, Nagaokakyo, JP;
Abstract
A rectification switch control switch element (Q) is provided between a gate and a source of a rectification switch element (Q). The rectification switch control switch element (Q) is turned ON in response to a signal on a secondary side of a pulse transformer (T) at a turn OFF timing of a main switch element (Q) to forcedly turn OFF the rectification switch element (Q). As a result, the rectification switch element (Q) can be turned OFF in synchronism with an OFF of the main switch element at a time of a backflow. With use of a free resonance between a capacitance between a gate and a source of the rectification switch element (Q) and a commutation switch element (Q) and a choke coil (L), an excitation state of the choke coil (L) can be reset. Then, it is possible to stabilize a detection voltage of a tertiary rectification smoothing circuit () which uses a tertiary winding (N) of a transformer (T), thus stabilizing control of the circuit functions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile