Method of operating gas-filled tubes

Electric lamp and discharge devices: systems – Current and/or voltage regulation

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Details

G05F 100, H05B 3702, H05B 3904, H05B 4136

Patent

active

050399209

ABSTRACT:
A gas-filled tube is operated by application of a powered electrical signal which stimulates the tube at or near its maximum efficiency region for lumens/watt output; the signal may generally stimulate the tube at a frequency between about 20 KHz and about 100 KHz with an on-to-off duty cycle of greater than one-to-one. Without limiting the generality of the invention, formation of the disclosed powered electrical signal is performed using an electrical circuit comprising a feedback transformer having primary and secondary coils, a feedback coil, and a bias coil, operatively connected to a feedback transistor and to a plurality of gas-filled tubes connected in parallel.

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