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US 10,153,745 B1Granted
Feedback compensated master volume control
OwnerJohn Gary Tomaszewiczinventor
Life of this patent
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Abstract
A circuit and a method for maintaining the desired tone, harmonic relationship and dynamic response of a musical instrument amplifier throughout the complete master volume power attenuation range.
Claims8
An amplifier for musical instruments, comprising:
- a ganged potentiometer comprising a control device which produces a controlled feedback resistance having a feedback resistance ratio and producing a phase inverter feedback voltage;
- an audio signal level device and a variable resistor device;
- a push-pull transformer coupled output amplifier having a plurality of electron emitting devices;
- an apparatus to link master volume attenuation with a feedback resistance ratio consisting of a ganged potentiometer;
- such that a feedback voltage ratio is maintained relative to the power amplifier input signal independent of the power amplifier output attenuation
- wherein activating the control device increases resistance, increases power amplifier output, reduces the phase inverter feedback voltage, and increases the feedback resistance.
3 more elements
An amplifier for musical instruments comprising:
- a ganged potentiometer;
- wherein said ganged potentiometer comprises a control device, an audio signal level device and a variable resistor device;
- and wherein activating the control device increases resistance, increases power amplifier output, reduces the phase inverter feedback voltage, and increases the feedback resistance.
Dependencies are inferred from the claim text.