Accession Number : ADD018563

Title :   EMI Line Filter

Descriptive Note : Patent, Filed 28 Jul 95, patented 8 Apr 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Wiggins, Charles L ; Stewart, David W

Report Date : 08 Apr 1997

Pagination or Media Count : 11

Abstract : A filter circuit for reducing electromagnetic interference in an ungrounded three phase delta electrical system. The filter circuit includes a low pass filter associated with each power phase having one input and output terminal placing an inductor in series with a phase conductor from a power supply. Input and output capacitors connect to a second input and output terminals respectively. An inductor connects in common between the second input and second output terminals thereby to complete a loop that is isolated from ground. Voltage suppression circuits connect from each phase to ground on the input side of the filter.

Descriptors :   *ELECTROMAGNETIC INTERFERENCE, *LOW PASS FILTERS, *PATENTS, TRANSMISSION LINES, ELECTRICAL IMPEDANCE, CAPACITORS, ELECTRICAL LOADS, ELECTRIC TERMINALS, ELECTRIC FILTERS, ELECTRICAL GROUNDING

Subject Categories : Electrical and Electronic Equipment
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE