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. 02, 1985
Filed:
Mar. 21, 1983
Albertus J van Uden, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
In a circuit for amplifying and/or attenuating a signal, which circuit comprises an amplifier stage (3) having an inverting input and a non-inverting input and an output, a first voltage divider (5) having n taps (6.1, 6.2, . . . , 6.n) is arranged between an input terminal (1) and ultimately a point of constant potential (18). The taps (6.1, 6.2, . . . , 6.n) are connected to a first controllable switching unit (7) for switching individual ones of the taps (6.1 to 6.n) to the non-inverting input of the amplifier stage (3). Further, a second voltage divider (11) having m taps (12.1, 12.2, . . . , 12.m) is connected between an output terminal (2), which is the output of the amplifier stage (3), and (ultimately) the point of constant potential (18). The taps (12.1 to 12.m) are connected to a second controllable switching unit (13) for switching individual ones of the taps (12.1 to 12.m) to the inverting input of the amplifier stage (3).