Solid state musical instrument amplifier with vacuum tube signal

Details Solid state musical instrument amplifier with vacuum tube signal Solid state musical instrument amplifier with vacuum tube signal

1994-01-14

1998-03-10

Coles, Sr., Edward L.

Electrical audio signal processing systems and devices

Sound effects

381120, H03G 300

Patent

active

057270694

ABSTRACT:
A musical instrument amplifier has all solid state amplification stages but incorporates a pair of vacuum tube signal magnitude limiters to provide vacuum tube type sound when the amplifier is operating in a nonlinear condition. The vacuum tubes are connected to have no supply potential so as to minimize microphonics and are each provided with a small amount of reverse bias to provide a desirable shape of the tube conduction curve and space charge suppression.

REFERENCES:
patent: 2077466 (1937-04-01), Dreyer et al.
patent: 4809336 (1989-02-01), Pritchard
patent: 5012199 (1991-04-01), McKale
patent: 5127059 (1992-06-01), Elion et al.
patent: 5133014 (1992-07-01), Pritchard
Radiotron Desinger's Handbook, ed. F. Langford-Smith. The Wireless Press 1953.

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