Power supply for gas discharge devices

Details Power supply for gas discharge devices Power supply for gas discharge devices

1988-06-09

1989-04-11

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 97, 323289, 315DIG7, H02M 7537

Patent

active

RE0329045

ABSTRACT:
A low current, high voltage power supply for gas discharge devices, such as neon tubes. The power supply has a free-running oscillator which generates a high frequency voltage signal which drives a light-weight, compact transformer. The oscillator has a power transistor drive, and a second transistor is used to remove the base drive of the power transistor to render it non-conductive. The second transistor also provides a path for rapid evacuation of the charge carriers stored in the base-emitter junction of the power transistor to rapidly render it non-conductive when the second transistor is energized. A safety bypass circuit is provided should a fault occur with the gas discharge device.

REFERENCES:
patent: 3662249 (1972-05-01), Wijsboom
patent: 3700956 (1972-10-01), Cluett
patent: 3753075 (1973-08-01), Tomura et al.
patent: 3978390 (1976-08-01), Remery
patent: 4220987 (1980-09-01), Rao et al.
patent: 4316242 (1982-02-01), Colangelo
patent: 4443838 (1984-04-01), Yamada

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