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. 12, 2001
Filed:
Dec. 18, 1998
Applicant:
Inventors:
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/18 ;
U.S. Cl.
CPC ...
H02H 3/18 ;
Abstract
A loss-of-ground protection circuit for an electronic relay including a control circuit driving a power transistor, and at least one cutoff transistor having a grounded control terminal, the cutoff transistor being interposed between the control circuit and a control terminal of the power transistor, and having a polarity such that loss of ground will cause the cutoff transistor to turn off.