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. 13, 1995
Filed:
May. 21, 1992
Applicant:
Inventors:
Stefano Sueri, Catania, IT;
Sergio Palara, Catania, IT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B / ; H03K / ; H03K / ; G05F / ;
U.S. Cl.
CPC ...
327108 ; 327110 ; 327378 ; 327483 ; 327484 ; 327490 ; 323289 ; 323312 ; 323315 ;
Abstract
A driving circuit is provided for a power transistor connected to an inductive load. A detection resistor is placed between ground and the emitter of the power transistor. The driving circuit has a first portion which is capable of generating a first current which is a non-linear function of the voltage across the detection resistance. A second portion of the driving circuit is used to generate a base current for the power transistor that is proportional to the first current. The non-linear function of the first current compensates for the non-linear gain with respect to collector current of the power transistor.