Stringed instrument with simulator preamplifier

Details Stringed instrument with simulator preamplifier Stringed instrument with simulator preamplifier

G - Physics

10

H

G10H 3/12 (2006.01) G10D 1/08 (2006.01)

Patent

CA 2639772

A stringed instrument and preamplifier combination where the preamplifier simulates the sound of analog tube amplifiers, and contains only solid state active devices. The preamplifier uses a diode branch with the diode biased into its forward active region and as a non-linear resistive element to provide signal-modulated gain on the operational amplifier gain stage. An alternative embodiment supplements the diode branch with series and parallel resistors as additional design optimization parameters. Another alternative embodiment adds symmetrical output clipping diodes to simulate a vacuum tube push-pull output independently of the diode branch.

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