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:
Nov. 18, 2003
Filed:
May. 06, 2002
Viorel Mark Pacala, Mount Laurel, NJ (US);
John Tsinetakes, Hamilton, NJ (US);
Uditha Jayakody, Mt. Laurel, NJ (US);
Sunder Shahani, Jackson, NJ (US);
Lockhead Martin Corporation, Bethesda, MD (US);
Abstract
A full-wave bridge switching power supply includes first and third “serially” connected switches and second and fourth serially connected switches. An output transformer has one end of its primary winding connected to the juncture of the first and third switches and the other end connected to the juncture of the second and fourth switches. The switches are provided with zero-voltage switching signals by way of transformers. In order to avoid the switch-slowing effects of transformer inductance, a subsidiary power supply is associated with each switch. The subsidiary power supplies of the first and third switches are coupled to the control electrodes (gates) of the first and third switches at turn-on, and the subsidiary power supplies of the second and fourth switches are applied during turn-off.