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:
Apr. 19, 1994
Filed:
Nov. 30, 1992
Jean-Charles Grasset, Fontaine, FR;
Thomson Composants Militaires et Spatiaux, Courbevoie, FR;
Abstract
A light signal receiver in which an input of a preamplifier receives a so-called useful electric current output by a light-sensitive device. The preamplifier comprises an input stage having an input transistor assembled with a 'common base' whose emitter is connected to the input of the preamplifier and whose base is kept at a fixed potential. A low input impedance and therefore a reduction of the influence of stray capacitance exhibited by the light-sensitive device results from this arrangement Further, a second input transistor can be utilized so that the preamplifier operates as a differential type preamplifier.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile