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:
Mar. 29, 1983
Filed:
Nov. 12, 1981
Applicant:
Inventor:
Frederick A Stich, Milwaukee, WI (US);
Assignee:
Allis-Chalmers Corporation, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 91 ; 323284 ; 323288 ; 307297 ; 3302 / ; 330298 ; 361 86 ; 361 18 ;
Abstract
A conduction limit protective arrangement for a power transistor switch regulated by a train of control pulses is disclosed which automatically changes the conduction limit as a function of the voltage, current, and temperature conditions to which the switch is subjected so that it is within its safe operating area limits at all times, thereby permitting the switch to carry maximum current while being fully protected at all times.