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:
Feb. 19, 1985
Filed:
Jun. 21, 1982
Applicant:
Inventor:
William J Janutka, West Allis, WI (US);
Assignee:
Eaton Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307570 ; 307246 ; 307572 ; 307581 ;
Abstract
A fast turn-off FET circuit is provided by a bipolar transistor in the gate circuit of the FET. The bipolar transistor is driven into conduction by residual charge in the gate to source capacitance of the FET upon turn-off of the latter due to removal of gate drive. Conduction of the bipolar transistor provides faster discharge therethrough of the FET gate, whereby to facilitate faster FET turn-off without reverse gating current and its attendant auxiliary power supply.