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:
Dec. 13, 1983
Filed:
Nov. 16, 1981
Applicant:
Inventor:
John J Toney, Scottsdale, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 77 ; 361246 ; 307127 ; 3072 / ; 320 25 ;
Abstract
Four bipolar transistors are arranged in a bridge configuration and are interconnected with two additional bipolar transistors to provide an efficient polarity guard circuit. The circuit has two output terminals, one of which has a positive polarity regardless of the polarity across two input terminals. The two additional transistors prevent collector to base current from flowing through any of the bridge transistors which may be biased off.
Toney, John. (1983). Polarity guard circuit (U.S. Patent No. 4420786). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4420786
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile