Fluorescent lamp excitation circuit having a multi-layer piezoel

Details Fluorescent lamp excitation circuit having a multi-layer piezoel Fluorescent lamp excitation circuit having a multi-layer piezoel

1999-10-08

2000-09-26

Wong, Don

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315209R, 315276, 315224, H05B 3702

Patent

active

061246786

ABSTRACT:
Fluorescent lamp excitation circuits are provided which use a resonating piezoelectric transformer along with complementary circuit components, to efficiently convert a DC first voltage to a transformer-output AC second voltage. In the preferred embodiment of the invention, A High Displacement Piezoelectric (HDP) transformer achieves sufficiently high voltage output to "cold fire" a gas discharge lamp. The disclosed circuit may be modified using conventional electrical sub-circuitry to pre-heat the cathodes of the lamp.

REFERENCES:
patent: 5548189 (1996-08-01), Williams
patent: 5886477 (1999-03-01), Honbo et al.
patent: 6057648 (2000-05-01), Nerone et al.

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