Audio signal amplifier device

• US 5,539,833 A
• Filed: 10/24/1994
• Issued: 07/23/1996
• Est. Priority Date: 10/24/1994
• Status: Expired due to Fees

• Current Assignee: Toshimi Furukawa, Yamashita, Osamu
• Original Assignee: Toshimi Furukawa, Yamashita, Osamu
• Inventors: Yamashita, Osamu, Furukawa, Toshimi
• Primary Examiner(s): Isen, Forester W.
• Assistant Examiner(s): Mei, Xu
• Application Number:
  US08/327,553
• Time in Patent Office: 638 Days
• Field of Search: 381/98, 381/101, 381/102, 381/103, 381/106, 381/109, 381/97, 381/59, 333/14, 333/28 R, 333/28 T, 330/295, 330/124 R, 330/124 D, 330/84, 330/133, 330/276
• US Class Current: 381/98
• CPC Class Codes: H03F 3/187 in integrated circuits
• CPC Class Codes: H03G 5/10 having semiconductor devices

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 T₁, T₂ connected in series, a medium compass controlling circuit (2, 9) having a capacitor C₂ and a resistor R₃ connected in series, and a high compass controlling circuit (3, 10) having a capacitor C₃ and an amplifier A₂ 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 PA₁, wherein the post-stage circuit (7) is coupled with an output transformer T₄ through a pre-amplifier PA₃, and the pre-stage circuit (6) is coupled with an input transformer T₃ through a pre-amplifier PA₂.

Claims

1. An audio signal amplifier device, comprising:

first parallel compass controller circuit means including;

low compass controlling circuit means having a plurality of transformers connected in series;

medium compass controlling circuit means having a capacitor and a resistor connected in series; and

high compass controlling circuit means having a capacitor and an amplifier connected in series, wherein said three compass controlling circuit means are connected in parallel; and

second parallel compass controller circuit means including;

low compass controlling circuit means having a plurality of transformers connected in series;

medium compass controlling circuit means having a capacitor and a resistor connected in series; and

high compass controlling circuit means having a capacitor and an amplifier connected in series, wherein said three compass controlling circuit means are connected in parallel; and

said first and second parallel compass controller circuit means being connected in series through a pre-amplifier.

2. An audio signal amplifier device, comprising:

first parallel compass controller circuit means including;

low compass controlling circuit means having a plurality of transformers connected in series;

medium compass controlling circuit means having a capacitor and a resistor connected in series; and

high compass controlling circuit means having a capacitor and an amplifier connected in series, wherein said three compass controlling circuit means are connected in parallel; and

second parallel compass controller circuit means including;

low compass controlling circuit means having a plurality of transformers connected in series;

medium compass controlling circuit means having a capacitor and a resistor connected in series; and

high compass controlling circuit means having a capacitor and an amplifier connected in series, wherein said three compass controlling circuit means are connected in parallel; and

said first and second parallel compass controller circuit means being connected in series through a pre-amplifier, wherein either of said first and second parallel compass controller circuit means acts as the post-stage compass controller circuit that is coupled with output transformer means through a pre-amplifier and the other circuit acts as the pre-stage compass controller circuit that is coupled with input transformer means through a pre-amplifier.

3. An apparatus for recording audio signals on recording mediums such as compact disk, laser disk and the like, said apparatus including an audio signal amplifier device that comprises:

first parallel compass controller circuit means including;

low compass controlling circuit means having a plurality of transformers connected in series;

medium compass controlling circuit means having a capacitor and a resistor connected in series; and

high compass controlling circuit means having a capacitor and an amplifier connected in series, wherein said three compass controlling circuit means are connected in parallel; and

second parallel compass controller circuit means including;

low compass controlling circuit means having a plurality of transformers connected in series;

medium compass controlling circuit means having a capacitor and a resistor connected in series; and

high compass controlling circuit means having a capacitor and an amplifier connected in series, wherein said three compass controlling circuit means are connected in parallel; and

said first and second parallel compass controller circuit means being connected in series through a pre-amplifier, wherein either of said first and second parallel compass controller circuit means acts as the post-stage compass controller circuit that is coupled with output transformer means through a pre-amplifier and the other circuit acts as the pre-stage compass controller circuit that is coupled with input transformer means through a pre-amplifier.