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:
May. 13, 2003
Filed:
Aug. 12, 2002
Applicant:
Inventors:
Vladimir V. Nadot, Voorhees, NJ (US);
Oleg S. Fishman, Maple Glen, PA (US);
Assignee:
Inductotherm Corp., Rancocas, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/122 ; H02M 3/315 ; H02M 7/515 ;
U.S. Cl.
CPC ...
H02H 7/122 ; H02M 3/315 ; H02M 7/515 ;
Abstract
A fault current tolerant power supply circuit having a dc power source and switching devices for inverting dc current from the source into ac load current includes a protective circuit for protecting the switching devices from overvoltage conditions when an inductive load is short-circuited. The protective circuit uses a capacitive component to absorb charge during a short circuit to protect non-conducting switching devices from an overvoltage condition.