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:
Dec. 05, 1989
Filed:
Dec. 21, 1987
Applicant:
Inventors:
Sampat S Shekhawat, Rockford, IL (US);
John J Dhyanchand, Rockford, IL (US);
John Horowy, Roscoe, IL (US);
Assignee:
Sundstrand Corp., Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307570 ; 307263 ; 307300 ; 307315 ;
Abstract
A Darlington-type amplifier (10) having an input field effect transistor and an output bipolar transistor (T.sub.2) is disclosed with improved turn-off time. Turnoff is enhanced by short-circuiting the gate-to-source or drain capacitance of the input field effect transistor (T.sub.1) and after turnoff is complete of the input field effect transistor prior to turn off of the output bipolar transistor (T.sub.2) coupling the base of the output bipolar transistor to a reference potential to discharge minority carriers therein to complete turnoff.