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:
Jan. 10, 1978
Filed:
Jan. 21, 1977
Andrew Gordon Dingwall, Somerville, NJ (US);
Bruce David Rosenthal, Randolph, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A cascade amplifier embodying the present invention includes a plurality of amplifier stages in direct-coupled cascade connection. During specified intervals interspersed with normal amplification equal potentials are imposed on the inverting and non-inverting terminals of the first amplifier stage. A direct-coupled feedback connection from the output port of the final amplifier stage to the input port of one of the amplifier stages succeeding the first includes a sample-and-hold circuit. This sample-and-hold circuit samples the signal level appearing at the output port of the final amplifier stage during said specified intervals and holds that level for the feedback connection during the intervening periods of normal amplification to provide continuing compensation against input offset potential error.