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:
Jul. 23, 1996
Filed:
Oct. 24, 1994
Osamu Yamashita, Enzan-shi, Yamanashi 404, JP;
Toshimi Furukawa, Enzan-shi, Yamanashi 404, JP;
Other;
Abstract
An audio signal amplifier device is disclosed, and includes two parallel compass controller circuits (6, 7), each of the circuits (6, 7) having the identical configuration and including a low compass controlling circuit (1, 8) having a plurality of transformers T.sub.1, T.sub.2 connected in series, a medium compass controlling circuit (2, 9) having a capacitor C.sub.2 and a resistor R.sub.3 connected in series, and a high compass controlling circuit (3, 10) having a capacitor C.sub.3 and an amplifier A.sub.2 connected in series, those three compass controlling circuits being coupled in parallel. The parallel compass controller circuits (6, 7) are connected in series through a pre-amplifier PA.sub.1, wherein the post-stage circuit (7) is coupled with an output transformer T.sub.4 through a pre-amplifier PA.sub.3, and the pre-stage circuit (6) is coupled with an input transformer T.sub.3 through a pre-amplifier PA.sub.2.