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. 05, 1984
Filed:
Apr. 16, 1982
Applicant:
Inventors:
Kenneth C Shuey, Cridersville, OH (US);
David L Stechschulte, Columbus Grove, OH (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307253 ; 307270 ; 307280 ; 307300 ;
Abstract
A transistor base drive circuit achieves optimum base current levels to avoid unnecessary transistor power dissipation by including means for diverting excessive base drive from the transistor base to the transistor collector. A capacitor in series with the transistor base decreases switch transition time. Increasing capacitance of the capacitor results in a decrease in transistor saturation voltage, thereby decreasing power dissipation in the transistor.