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:
Aug. 31, 1993
Filed:
Dec. 11, 1991
Applicant:
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307520 ; 307542 ; 307543 ; 307521 ; 328167 ;
Abstract
A circuit for suppressing the noise produced by the switching of two voltage sources having a direct current offset and connected alternately to the input of an amplification stage. The circuit comprises a low-pass filter between the two voltage sources and the amplification stage, which filter is normally disabled during normal operation of the amplification stage, and is only enabled during switching of the two voltage sources, so as to enable a gradual change in the direct voltage supplied to the input of the amplification stage and due to the offset between the two sources.