Operating section display unit of air conditioning system for ve

Details Operating section display unit of air conditioning system for ve Operating section display unit of air conditioning system for ve

1997-03-06

1998-09-15

Lee, Benny

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

315294, 315307, 345 47, 345 75, G09G 310

Patent

active

058084193

ABSTRACT:
In the middle of the grid signal wire connecting the grid terminal of the clock drive IC with that of the clock fluorescent display tube, the illumination control circuit is arranged, wherein in accordance with the illumination control signal, the illumination control circuits converts the first grid input signal and the second one by the 1/2 duty signal into the first grid output signal and the second one by a pulse signal, the pulse width of which is changed according to the illumination control signal.

REFERENCES:
patent: 4358713 (1982-11-01), Senoo et al.
patent: 4968917 (1990-11-01), Harris
patent: 5563622 (1996-10-01), Person et al.

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