Method and circuit for driving a gas discharge lamp

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition

Reexamination Certificate

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C315S2090SC, C315S224000, C315S225000

Reexamination Certificate

active

07990069

ABSTRACT:
A method for driving a gas discharge lamp and relates to a lamp driver circuit for driving a gas discharge lamp. The method includes supplying a current to the gas discharge lamp, reversing the direction of the current supplied to the gas discharge lamp and, substantially simultaneously, generating a relatively high voltage. The generated high voltage serves to prevent a series of re-ignitions of the gas discharge lamp that may lead to visible flickering of the gas discharge lamp or to extinction of the gas discharge lamp.

REFERENCES:
patent: 5517088 (1996-05-01), Blom
patent: 5932976 (1999-08-01), Maheshwari et al.
patent: 6020691 (2000-02-01), Sun et al.
patent: 6124682 (2000-09-01), Lakin et al.
patent: 6194845 (2001-02-01), Konopka et al.
patent: 2002/0190665 (2002-12-01), Sun
patent: 0405715 (1991-02-01), None
Written Opinion.

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