High pressure discharge lamp utilizing an unsaturated type disch

Details High pressure discharge lamp utilizing an unsaturated type disch High pressure discharge lamp utilizing an unsaturated type disch

1991-04-15

1992-08-25

Yusko, Donald J.

Electric lamp and discharge devices

Plural unit

Inter-electrode connection

313 25, 313570, 313571, 313638, 313639, H01J 1720, H01J 6112, H01J 6120

Patent

active

051421887

ABSTRACT:
Two series connected high pressure sodium arc discharge tubes include a saturated arc tube and an unsaturated arc tube. When the saturated arc tube voltage shifts in value due to changes in operating conditions, the other unsaturated arc tube voltage does not shift to compensate for the voltage increase. Because the unsaturated arc tube voltage does not shift, the rate of voltage shift of the saturated arc tube is smaller in magnitude than otherwise would occur if both arc tubes were saturated.

REFERENCES:
patent: 2019633 (1933-08-01), Rentschler
patent: 2026941 (1933-08-01), Henry
patent: 4075530 (1978-02-01), Furukubo
patent: 4751432 (1988-06-01), Van Delm
patent: 4755721 (1988-07-01), Okada et al.

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