Audio signal amplifier device

专利名称：Audio signal amplifier device发明人：Osamu Yamashita,Toshimi Furukawa申请号：US08/327553申请日：19941024公开号：US05539833A公开日：19960723

摘要：An audio signal amplifier device is disclosed, and includes two parallel compasscontroller circuits (6, 7), each of the circuits (6, 7) having the identical configuration andincluding a low compass controlling circuit (1, 8) having a plurality of transformersT.sub.1, T. sub.2 connected in series, a medium compass controlling circuit (2, 9) having acapacitor 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 inseries, 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 outputtransformer T.sub.4 through a pre-amplifier PA.sub. 3, and the pre-stage circuit (6) iscoupled with an input transformer T. sub.3 through a pre-amplifier PA.sub.2.

申请人：YAMASHITA; OSAMU,FURUKAWA; TOSHIMI

代理机构：Wenderoth, Lind & Ponack

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