Compact fluorescent lamp with overcurrent protection

Electric lamp and discharge devices: systems – Pulsating or a.c. supply – With power factor control device

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315291, 315307, H05B 3702

Patent

active

059821108

ABSTRACT:
A compact fluorescent lamp includes a ballast having a control circuit. The control circuit regulates the amount of power supplied to the lamp based on samples representing lamp current and lamp voltage. The sample of lamp voltage supplied to the control circuit is limited so that it cannot drop below a minimum level thereby preventing excessive levels of current from flowing through the lamp at low lamp voltage.

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"A Method to Improve the Performance of Compact Fluorescent Lamps", A.W. Serres et al, Journal of the Illuminating Engineering Society, Summer 1993, pp. 40-48.

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