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:
Sep. 13, 1977
Filed:
Oct. 01, 1976
Joseph John Curcio, Boalsburg, PA (US);
Paoli High Fidelity Consultants Inc., Paoli, PA (US);
Abstract
An electronic filter having active components for eliminating A.C. signals, and for producing constant D.C. voltage at its output, wherein the filter can be effectively used between the D.C. power supply and the B+ terminal for an audio amplifier, especially one having vacuum tubes for its major active elements. The electronic filter monitors its output voltage to control the conductivity of a transistor which maintains the output voltage constant. Bias current and voltage requirements for the filter elements are generated internally from the filter input, and are also referenced to the filter output to provide a constant D.C. output over load variations.