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US 5,668,499 AGranted
Tube type power amplifier with distortion control
AssigneePeavey Electronics Corporation
InventorsJames Robert Albert, Jack C. Sondermeyer
Life of this patent
Estimating the term…
Abstract
A power amplifier has a distortion control circuit responsive to a clipping detector for loading said amplifier input with a signal sufficient to reduce the input to the tube grids to a level below clipping.
Claims6
A circuit for reducing the gain of a push/pull tube power amplifier having grids for receiving an input signal, below a level sufficient to cause the amplifier to clip the output, comprising:
- a detector having an input port, a reference port and an output, the input port adapted to be commonly coupled to the grids of the tubes for sensing the input signal, and the reference port being adapted to be coupled to a reference;
- said detector producing an output when the input signal exceeds a level sufficient to cause clipping in the amplifier, said output having a duration proportional to the time the input exceeds said level;
- and
- a distortion control circuit having an input responsive to the detector and an output adapted to be coupled to the input of the power amplifier for loading the input in response to the detector output.
1 more element
A circuit for reducing the gain of a tube power amplifier having a grid for receiving an input signal, below a level sufficient to cause the amplifier to clip the output, comprising:
- a detector having an input port, a reference port and an output, the input port adapted to be commonly coupled to the grid of the tube for sensing the input signal, and the reference port being adapted to be coupled to a reference;
- said detector producing an output when the input signal exceeds a level sufficient to cause clipping in the amplifier, said output having a duration proportional to the time the input exceeds said level;
- and
- a distortion control circuit having an input responsive to the detector and an output adapted to be coupled to the input of the power amplifier for loading the input in response to the detector output.
1 more element
Dependencies are inferred from the claim text.