Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent
1975-02-18
1976-06-08
Grimm, Siegfried H.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Condenser in shunt to the load device and the supply
315241P, 315243, H05B 4132
Patent
active
039626016
ABSTRACT:
A circuit for operating a high power ionizable discharge device such as a xenon flash tube or other gas filled lamp includes a trigger circuit for gating the device periodically to produce a discharge condition. A capacitive energy storage circuit discharges through the device when the device is placed in a discharge condition. A low resistance power supply circuit charges the energy storage circuit. First and second sensing circuits respectively detect the charge level of the energy storage circuit and detect discharge of the discharge device. A switching device comprising a zero crossing solid state relay controls the energization of the power supply circuit. A control circuit is operated by the first sensing circuit to operate the switching device so that the power supply circuit is deenergized when the energy storage circuit is charged to a predetermined level. The second sensing circuit operates the control circuit to maintain the power supply disabled during discharge for a time sufficient for deionization of the discharge device.
REFERENCES:
patent: 3162786 (1964-12-01), Capteyn
patent: 3316445 (1967-04-01), Ahrons
patent: 3375403 (1968-03-01), Flieder
patent: 3644818 (1972-02-01), Paget
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