Inverter for the supply of discharge lamps with heated electrode

Details Inverter for the supply of discharge lamps with heated electrode Inverter for the supply of discharge lamps with heated electrode

1994-01-27

1995-12-26

Wong, Peter S.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363134, 315DIG5, 315DIG7, H02M 3337, H05B 4129

Patent

active

054793343

ABSTRACT:
An inverter for the supply of one or more discharge lamps with heated electrodes includes a load circuit with a series resonant circuit and at least one lamp, two controllable switches and a control circuit for the switches, causing the switches to conduct alternately. A normally isolated dissipative component is connected, when the voltage across the load circuit exceeds a given value, to the load circuit, thus modifying its figure of merit to limit the maximum voltage without varying the resonant frequency of the load circuit.

REFERENCES:
patent: 4692667 (1987-09-01), Nilssen
patent: 4725762 (1988-02-01), Jagschitz
patent: 4734624 (1988-03-01), Nagase et al.
patent: 4876635 (1989-10-01), Park et al.

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