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:
Apr. 26, 1994
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327110 ; 327131 ; 327381 ; 327478 ;
Abstract
A control circuit for slowly turning off a solid-state power transistor, particularly for inductive loads, comprising means for limiting the load current flowing through the switch, and timing and control circuits to ensure, irrespective of the duration of a command pulse, slowed turn-off of the switch with a predetermined delay as to the time when the maximum load current value is reached, thereby keeping the power dissipation through the switch during the load current limiting phase within predetermined values and the turn-off overvoltage within predetermined levels.