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. 02, 1976
Filed:
Mar. 08, 1974
Applicant:
Inventor:
Desmond Ross Armstrong, Mitcham, EN;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307290 ; 3072 / ; 3072 / ; 307D / ;
Abstract
A switching circuit is disclosed that is operative from a single supply voltage and is capable of switching in response to both positive and negative voltage input signals and exhibits hysteresis within defined positive and negative threshold voltage limits with respect to a datum voltage level. The circuit includes an input transistor having an input electrode connected to the signal input terminal and a transistor - diode current mirror connected to said input electrode whereby the current mirror defines one of the threshold voltage limits.