Programmable controls for vacuum tube preamplifier

Details Programmable controls for vacuum tube preamplifier Programmable controls for vacuum tube preamplifier

1992-05-08

1993-05-04

Mottola, Steven

Amplifiers

Having light-controlled or activated device

381118, 381109, H03F 1700, H03G 308

Patent

active

052085481

ABSTRACT:
Light Dependent Resistors (LDR's) are used together with a differential amplifier and a plurality of reference resistors to replace conventional analog potentiometer controls and thus offer digital activation and programmability to a traditional style vacuum tube preamplifier.

REFERENCES:
patent: 5001440 (1991-03-01), Zerod
patent: 5032796 (1991-07-01), Tiers et al.

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