Arrangement for controlling an A.C. voltage

Details Arrangement for controlling an A.C. voltage Arrangement for controlling an A.C. voltage

1986-10-23

1987-12-22

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a transformer or inductor as the final control device

323301, 323343, G05F 120

Patent

active

047148705

ABSTRACT:
An arrangement for controlling an A.C. voltage supplied to a load, such as a fluorescent lamp emitting germicidal ultraviolet radiation in a water-purifying apparatus. The load is connected to the secondary winding of a transformer, the primary winding of which has a number of taps which are selectively connectable to an exterior A.C. voltage source. An electronic control device is arranged in dependence on the magnitude of the terminal voltage of the exterior A.C. voltage source to automatically connect that tap which causes the voltage applied to the load to be of a predetermined value.

REFERENCES:
patent: 3619765 (1971-11-01), Wood
patent: 3921059 (1975-11-01), Birman et al.
patent: 4623834 (1986-11-01), Klingbiel et al.

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