Phase control device

Details Phase control device Phase control device

1984-02-01

1986-02-04

Wong, Peter S.

Electricity: power supply or regulation systems

External or operator controlled

Phase controlled switching using electronic tube or a three...

315DIG4, 323324, 323272, G05F 2402

Patent

active

045688702

ABSTRACT:
A phase control device for regulating illumination of a fluorescent lamp means is disclosed, which includes a thyristor, an ignition circuit therefor and a delay circuit for providing a time delay of a predetermined period after a power switch of a driving circuit of the fluorescent lamp means is closed so that the ignition circuit is actuated to make the thyristor operative to thereby regulate the illumination thereof only after the fluorescent lamp means warms up sufficiently before the phase control therefor is introduced.

REFERENCES:
patent: 4119887 (1978-10-01), Iyama et al.
patent: 4460848 (1984-07-01), Fahnrich

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