Output power selection apparatus for a tube-type audio amplifier

Amplifiers – With control of power supply or bias voltage

Patent

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Details

330123, H03F 328

Patent

active

055505090

ABSTRACT:
An output power selection apparatus reduces the R.M.S. power output of a tube type amplifier without the use of solid state devices or ganged high or low power potentiometers.

REFERENCES:
patent: 4286492 (1981-09-01), Claret

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