Energy saving circuit for discharge tubes

Details Energy saving circuit for discharge tubes Energy saving circuit for discharge tubes

1988-05-26

1991-11-05

Razavi, Michael

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Plural load device systems

315 97, 315 95, 315 94, 315102, 315DIG5, H05B 3900

Patent

active

050633287

ABSTRACT:
Circuits for increasing the efficiency of fluorescent tubes by openings one side of all of the filament circuits of the tubes in response to flow of plasma current. The circuits may be employed in conjunction with the circuits of Lucetta U.S. Pat. No. 3,954,316. It should be noted that solid state relays could also be employed so that filament current, although not completely terminated, would be substantially terminated and filament losses would be inconsequential.

REFERENCES:
patent: 2897403 (1959-07-01), Charbonneaux
patent: 3170085 (1965-02-01), Genuit
patent: 3549942 (1970-12-01), Nijholt
patent: 3851209 (1974-11-01), Murakami et al.
patent: 3866087 (1975-02-01), Powell
patent: 4016452 (1977-04-01), Willis
patent: 4399391 (1983-08-01), Hammer et al.
patent: 4425530 (1984-01-01), Hammer et al.
patent: 4461976 (1984-07-01), Yamamoto et al.
patent: 4547705 (1985-10-01), Hirayama et al.
patent: 4568857 (1986-02-01), Head

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