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. 27, 1995
Filed:
Sep. 12, 1994
Applicant:
Inventor:
Dan Agiman, Mission Viejo, CA (US);
Assignee:
Cherry Semiconductor Corporation, East Greenwich, RI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ; H02H / ;
U.S. Cl.
CPC ...
323284 ; 361101 ; 323907 ;
Abstract
An overcurrent limit circuit in which the output transistor and current sense transistor share a common collector and common base. A reference voltage is compared with a voltage derived from a current sense resistor. The circuit limits the current to the base of the output transistor in response to the reference voltage threshold being reached at the current sense resistor. A Vbe comparator comprised of two transistors may be used with a first bias current to both transistors and a second bias current to one of the two transistors.