Method of operating a high-pressure metal vapor discharge lamp a

Details Method of operating a high-pressure metal vapor discharge lamp a Method of operating a high-pressure metal vapor discharge lamp a

1982-05-27

1987-11-10

Dixon, Harold

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315194, 315199, 315287, H05B 3702

Patent

active

047059915

ABSTRACT:
A method of operating a high-pressure metal vapor discharge lamp at a periodic operating voltage of more than 500 Hz wherein the operating voltage is suddenly varied in phase at intervals, and preferably also wobbled in frequency, in order to avoid acoustic resonances in the lamp.

REFERENCES:
patent: 3463964 (1969-08-01), Privett et al.
patent: 3621331 (1971-11-01), Barron
patent: 3890537 (1975-06-01), Park et al.
patent: 3999100 (1976-12-01), Dencly et al.
patent: 4066930 (1978-01-01), Summa
patent: 4170747 (1979-10-01), Holmes
patent: 4187448 (1980-02-01), Kuroi et al.
patent: 4375608 (1983-03-01), Kohler

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