Brightness stabilizing control of a VF display

Details Brightness stabilizing control of a VF display Brightness stabilizing control of a VF display

1989-08-04

1990-11-13

Mis, David

Electric lamp and discharge devices: systems

Discharge device load

Plural cathode and/or anode discharge device load

315168, 3151693, 315DIG1, 340767, H05B 4100, G09G 304

Patent

active

049704419

ABSTRACT:
A VF display control apparatus operated directly from an automotive storage battery in which the display brightness variation is minimized by controlling the relationship between the anode and grid voltages in relation to the fluctuation of the battery voltage. The anodes of the display are operated substantially at the battery voltage, and the grid voltage is reduced in relation to the amount by which the anode (supply) voltage exceeds the nominal open-circuit terminal voltage of the battery.

REFERENCES:
patent: 4241294 (1980-12-01), Fisler
patent: 4495445 (1985-01-01), Turney
patent: 4922243 (1990-05-01), Kosicki et al.
Brochure Entitled "Fluorescent Indicator Panel Application Notes" NEC Electronics Inc., Issue 2.

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