Power supply systems for neon lights

Details Power supply systems for neon lights Power supply systems for neon lights

1990-11-13

1992-01-14

Mis, David

Electric lamp and discharge devices: systems

With automatic shunt and/or cutout

Plural load device systems

315127, 315220, 315225, 315323, 315324, 315DIG7, H05B 4124, H05B 4144

Patent

active

050813994

ABSTRACT:
A main power supply device uses single phase, or three phase R, S, T; through rectification and filtration; each phase produces a different D.C. voltage so as to supply a respective voltage transforming device. The rectifier output of a step-down supply of the S, T, phase, in addition to supplying an astable square wave oscillator, so as to control signal outputs via a driving circuit, also supplies a tripping device, so as to control the high A.C. output from the high-voltage transformer of the transforming device. Any abnormal load can be detected by a detecting transformer and a protective circuit, so as to control cut-off of a transistor of a switching loop. A plurality of transforming devices are of the modular plate type; trouble-shooting can be performed easily, and the speed of maintenance is increased; the working safety is also enhanced.

REFERENCES:
patent: 4980611 (1990-12-01), Orenstein

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