DC self-biased vacuum tube differential amplifier with...

Details DC self-biased vacuum tube differential amplifier with... DC self-biased vacuum tube differential amplifier with...

2009-01-12

2010-06-08

Choe, Henry K (Department: 2817)

Amplifiers

Sum and difference amplifiers

C330S252000

Reexamination Certificate

active

07733172

ABSTRACT:
A single stage differential amplifier is disclosed as comprising a pair of vacuum tube triodes for amplifying two input signals and generating two output signals. The differential amplifier has DC self-biasing ability and grid-to-cathode over-voltage protection for directly coupling from the outputs of another differential amplifier. By possessing these unique features, this differential amplifier becomes an important building block in forming a balanced amplifier by cascading multi differential amplifiers in a directly coupled fashion.

REFERENCES:
patent: 2776343 (1957-01-01), Yuni
patent: 3127569 (1964-03-01), Murray
patent: 4134077 (1979-01-01), Kelly et al.
patent: 6111460 (2000-08-01), Yamasita
patent: 7304535 (2007-12-01), Lam
patent: 7482867 (2009-01-01), Lam
patent: 743588 (1956-01-01), None

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