Audio signal amplifier device

Details Audio signal amplifier device Audio signal amplifier device

1994-10-24

1996-07-23

Isen, Forester W.

Electrical audio signal processing systems and devices

Including frequency control

330124R, 330295, 330276, 333 28T, H03G 500, H03F 368, H03F 326, H03H 500

Patent

active

055398332

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.

REFERENCES:
patent: 1965720 (1934-07-01), Nicolson
patent: 3539725 (1968-07-01), Hellwarth
patent: 4081757 (1978-03-01), Rumbaugh
patent: 5264810 (1993-11-01), Sager et al.
patent: 5323277 (1994-06-01), Sugibayashi

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