Browse Prior Art Database

Power Line Filter

IP.com Disclosure Number: IPCOM000096079D
Original Publication Date: 1964-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Curran, JE: AUTHOR

Abstract

A filter is shown at A which effectively rejects radio frequency interference (RF1) in a three-phase power system. It comprises common core 10 having separate windings 11, 12 and 13 connected in series with the three lines of a three-phase circuit. Capacitors C1 are Y-connected on the input side of the winding while capacitors C2 individually couple the lines to ground on the output side.

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Power Line Filter

A filter is shown at A which effectively rejects radio frequency interference (RF1) in a three-phase power system. It comprises common core 10 having separate windings 11, 12 and 13 connected in series with the three lines of a three-phase circuit. Capacitors C1 are Y-connected on the input side of the winding while capacitors C2 individually couple the lines to ground on the output side.

In a single-phase arrangement shown at B, common core 10 has windings 11 and 12 connected in series with the respective lines. A capacitor C1 couples the lines on the input side while capacitors C2 couple the lines individually to ground on the input and output sides.

The windings on the cores are so connected that their net inductive drops are zero, thus providing a minimum impedance to the power frequency while offering a high impedance to ground for RFI on the lines.

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