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:
Jul. 14, 1992
Filed:
Mar. 01, 1991
Applicant:
Inventors:
Assignee:
Telefunken electronic GmbH, Heilbronn, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502 / ; 2502 / ; 307311 ;
Abstract
The invention relates to a circuit array for an optical Schmitt trigger in which an optical input signal is converted into an electrical output signal by means of a light-sensitive receiver element, an amplifier stage, a Schmitt trigger stage and an output stage. It is provided in accordance with the invention that the amplifier stage contains a transimpedance amplifier stage, a differential amplifier stage, a first reference network and a compensating element, that the Schmitt trigger stage comprises a differential amplifier stage, a second reference network and a positive-feedback network, and that the output signal is emitted at the circuit output of the output stage.