Vacuum tube circuit

Details Vacuum tube circuit Vacuum tube circuit

2008-07-08

2008-07-08

Choe, Henry K (Department: 2817)

Amplifiers

With control of power supply or bias voltage

C330S145000

Reexamination Certificate

active

10700214

ABSTRACT:
A vacuum tube circuit is capable of amplifying an input signal with use of a low source voltage. Ordinarily, the amount of electrons released from a cathode which is heated by a heater is small since a voltage supplied to the heater is low. In the vacuum tube circuit disclosed here, a positive voltage is supplied to a grid terminal, which more effectively attracts the emitted electrons, thereby increasing the amount of electrons arriving at the plate terminal passing through the grid. As a result, a grid current and a plate current flow in the vacuum tube circuit, which achieves an operation for amplifying an input signal from a signal source.

REFERENCES:
patent: 2173426 (1939-09-01), Scott
patent: 2485748 (1949-10-01), Kucera
patent: 2580875 (1952-01-01), Young
patent: 2775659 (1956-12-01), Nelson
patent: 2890295 (1959-06-01), Murfin
patent: 3011101 (1961-11-01), Boyce Sr. et al.

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