Transistor amplifier

Details Transistor amplifier Transistor amplifier

1979-06-18

1982-02-02

Mullins, James B.

Amplifiers

Signal feedback

Nonlinear impedance element in loop path

330282, H03G 300

Patent

active

043142079

ABSTRACT:
A transistor amplifier utilizing AC, for an orchestral instrument, having a non-inverting input, with a predetermined range of linear amplification, a feedback means including a first path independent of transistors for controlling the input within said predetermined range, a supplementary path parallel with said first path and including a zener diode having a breakthrough point at the upper limit of said range, and a plurality of auxiliary paths having breakthrough points higher than that of the supplemental path, and each including a resistor and a zener diode, and arranged with the resistors in parallel and the zener diodes in series, forming a cascade arrangement, and the auxiliary path together being in parallel with the first path.

REFERENCES:
patent: 3153152 (1964-10-01), Hoffman
patent: 3436559 (1969-04-01), Wajs
Wentworth, "`Soft Limiting` in Audio Power Amplification", IEEE Transactions on Audio and Electroacoustics, Sep. 1970, pp. 313-315.

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