Power supply for HID lamp

Details Power supply for HID lamp Power supply for HID lamp

1980-11-18

1982-07-13

La Roche, Eugene R.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

315206, 315219, 315289, 315DIG5, H05B 41231

Patent

active

043396925

ABSTRACT:
A power supply for a high intensity discharge lamp is provided wherein the secondary windings of a pair of lamp strike pulse transformers are connected in series with the HID lamp directly across the AC supply, the impedance of these secondary windings acting as the only ballast elements of the power supply. The HID lamp is chosen to have relatively high operating and maximum starting currents so that warm-up time of the lamp is dramatically reduced while employing the lamp strike pulse transformers to perform the dual function of starting the lamp when either hot or cold and acting as the current limiting ballast for the lamp both during warm-up and under normal operating conditions.

REFERENCES:
patent: 3555352 (1971-01-01), Michalski
patent: 4167689 (1979-09-01), Quirke

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