Dual voltage power supply with input filter

Electricity: power supply or regulation systems – External or operator controlled – Using a transformer or inductor as the final control device

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307 75, 315173, 315243, 315283, 363 44, 363143, H02M 112

Patent

active

044081545

ABSTRACT:
A dual voltage power supply, for example operable from 120 and 240 volts a-c and having three voltage input terminals, is provided with an input filter having three windings on a core and inductively coupled together, the three windings being connected respectively to the three input terminals. Filter capacitors are connected to the windings.

REFERENCES:
patent: 3397355 (1968-08-01), Frank
patent: 3683271 (1972-08-01), Kobayashi
patent: 3780342 (1973-12-01), Grimshaw et al.
patent: 4109307 (1978-08-01), Knoll
patent: 4188661 (1980-02-01), Bower et al.

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