Fluorescent indicator tube and related circuit

Details Fluorescent indicator tube and related circuit Fluorescent indicator tube and related circuit

1977-12-23

1980-08-12

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

313497, 324121R, 340772, H01J 1748

Patent

active

042175780

ABSTRACT:
A fluorescent signal level indicator includes two parallel rows of anode electrodes coated with a layer of fluorescent material to emit light when energized in response to an input analog signal exceeding a corresponding one of graduated reference potentials. A cathode electrode is provided for emitting electrons toward the anodes and a grid electrode is mounted between the cathode and anode electrodes for controlling the amount of electrons passing therethrough.

REFERENCES:
patent: 3824581 (1974-07-01), Ohno
patent: 3922666 (1975-11-01), Inami et al.
patent: 3967158 (1976-06-01), Saxon
patent: 3973166 (1976-08-01), Maloney
patent: 3987392 (1976-10-01), Kugelmann et al.
patent: 4047073 (1977-09-01), Kishino

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