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:
Jun. 01, 2004
Filed:
May. 05, 2003
Guo-Kiang Hung, Hsin-Chu, TW;
Ambit Microsystems Corp., Hsin-Chu, TW;
Abstract
A transformer reset circuit includes a first capacitor serially connected to a transformer winding, a rectifier connected in parallel with the first capacitor and the transformer winding, a second capacitor, an auxiliary switch connected in series with the second capacitor to form a series circuit connected in parallel with the rectifier, and a switch control circuit. The switch control circuit can turn on the main switch and turn off the auxiliary switch to release magnetizing energy stored in an inductor to charge the first capacitor. The auxiliary switch can be turned on and the main switch can be turned off to transfer the magnetizing energy stored in the inductor and the energy stored in the first capacitor to the second capacitor. After the energy stored in the inductor is dissipated, the second capacitor charges the inductor and the first capacitor to reverse the magnetic field in the inductor so as to reset the transformer.