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:
Feb. 17, 1987
Filed:
May. 14, 1985
Noboru Tominari, Tokyo, JP;
Dynavector, Inc., , JP;
Abstract
An audio signal amplifier for an electromagnetic transducer, comprises a transformer which has a primary winding coupled to the electromagnetic transducer for receiving an output audio signal from the electromagnetic transducer and a secondary winding for producing a transformed audio signal as an output. The transformer has a turn ratio of the primary winding and the secondary winding which is selected to n:1, where n is a real number greater than 1. The audio signal amplifier further comprises a current-voltage conversion circuit which is coupled to the secondary winding of the transformer for converting an audio signal current from the secondary winding into an audio signal voltage.