Gas panel with improved drive circuits

Details Gas panel with improved drive circuits Gas panel with improved drive circuits

1980-01-21

1981-12-01

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

3151691, 340811, G06F 314

Patent

active

043039189

ABSTRACT:
A driving circuit for a gas-discharge display device includes a pair of switching members and the secondary windings of a transformer wired in series with one of the switching members. The switching members in response to receiving out-of-phase control signals alternately apply a low voltage pulse to the display device. The secondary windings of the transformer output continuously a high voltage pulse in phase with one of the switching members. Upon the generation of appropriate control signals enabling the operation of the switching members, a voltage of sufficient magnitude is applied to selected cell segments in the display device to fire the cells. The transformer together with the low voltage pulses are driven by a high frequency clock to provide a high intensity display operation.

REFERENCES:
patent: 3946381 (1976-03-01), Johnson et al.
patent: 3991416 (1976-11-01), Byles et al.
patent: 4027196 (1977-05-01), Criscimagna et al.
High-Level Driver for Gas Discharge Panel; Kleen; IBM Tech. Discl. Bull.; vol. 16, #9; 2/74; pp. 2941-2942.

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