High voltage discharge lamp device

Details High voltage discharge lamp device High voltage discharge lamp device

1993-10-06

1994-09-20

Pascal, Robert J.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

315205, 315219, 315246, 315DIG5, 315DIG7, H05B 3700

Patent

active

053492684

ABSTRACT:
A high voltage discharge lamp device may include a step-up DC-DC converter connected to a power switch; polarity switching elements for alternatively changing the polarities of the electric voltage outputted from the step-up DC-DC converter; and a polarity switching drive circuit for activating the polarity switching elements. Also, a high voltage discharge lamp device may include a pair of first and second step-up DC-DC converters connected to a power switch; polarity switching elements for alternatively changing the output polarities of the respective first step-up DC-DC converter and the second step-up DC-DC converter; and a polarity switching drive circuit for activating the polarity switching elements. The polarity switching drive circuit operates in synchronization with the on/off actions of the power switch, or in synchronization with either ultra low-frequency signals or low-frequency signals.

REFERENCES:
patent: 2810862 (1957-10-01), Smith
patent: 3789266 (1974-01-01), Polman et al.
patent: 5189343 (1993-02-01), Pacholok

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