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. 06, 1984
Filed:
Apr. 19, 1984
Hisao Nishino, Sendai, JP;
Shigeru Kondo, Sendai, JP;
Tohoku Metal Industries, Ltd., Sendai, JP;
Abstract
A circuit for driving a switching transistor which includes a driving pulse transformer having a primary winding to which a switching pulse is applied, a secondary winding connected to the base and the emitter of the switching transistor to turn on the switching transistor by the switching pulse applied to the primary winding, and a third winding. The third winding is connected to the emitter or the collector of the switching transistor so that the current flowing through the switching transistor of the on-condition flows through the third winding and induces a current on the secondary winding which is inverse to a current induced on the secondary winding by the switching pulse applied to the primary winding. The base-storaged carrier is rapidly drawn out after lapse of the switching pulse so that power dissipation is considerably reduced and high speed switching operation can be effected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile