Phase controlled voltage reducing circuit having line voltage co

Details Phase controlled voltage reducing circuit having line voltage co Phase controlled voltage reducing circuit having line voltage co

1980-12-08

1982-10-05

Beha, Jr., William H.

Electricity: power supply or regulation systems

Input level responsive

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

307252B, 323324, G05F 500

Patent

active

043530257

ABSTRACT:
A voltage reducing circuit device for reducing the RMS value of an incoming AC voltage is disclosed herein. This device is especially suitable for reducing line voltage applied to a load requiring lower voltage. In a preferred embodiment, the device is one which allows a domestic made 115 VAC small heating apparatus, such as a hair dryer, to be used in foreign countries where the 230 VAC service is available. In any case, the device is one which is relatively insensitive to fluctuations in line voltage and to changes in frequency.

REFERENCES:
patent: 3319077 (1967-05-01), Morris
patent: 4031458 (1977-06-01), Ichikawa

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