Why Do We Need a P Where to It?
ower Line Filter and
Place
What is Power Line Filter
A power line filter, also known as an EMI power line filters, is a passive bidirectional network, electrical equipment that filters a specific frequency point in the power line or the frequency out of a specific frequency point. Line filters are designed to reduce electromagnetic interference (EMI) in power lines. They are a frequency-selective two-port network made up of inductors, capacitors, and resistors.
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EMI Power Line Filters are required due to the use of high frequency switching techniques used in today's power conversion circuits. Harmonic noise created from fast changes in voltage and current from Switch Mode Power Supplies (SMPS), inverters, rectifiers, etc. require EMI filters to meet the conducted emission requirements.
Why Do We Need an LinePowerFilter
EMI
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Where Do We Place Power Line Filters
The design of an EMI power line filters necessitates an understanding of filter impedances and how they interact with circuit impedances over a wide frequency range. However, installation and mounting details can also affect the effectiveness of an EMI power line filter.
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WithIssuesCommonThreeArePresentedPowerLineFilters▸ Filter case bonding to hostequipment: ▸ Positioning a filter at the incoming power lines entrypoint: ▸ Systemcablerouting: 5
Filter Case Bonding To Host Equipment
The EMI filter's metal case must be metal to metal bonded to the equipment's metal case/chassis. Painted or nonconductive surfaces must be avoided because they reduce the effectiveness of the filter's line-to-ground capacitors.
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The greater the distance between a filter and the power entry point, the more likely noise will radiate and couple onto the power lines, bypassing the filter. The placement of the EMI filters at the incoming line's entry point is critical to filter performance and overall shield integrity.
Positioning a Filter At PowerIncomingTheLinesEntryPoint
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System Cable
Routing
It is critical to physically isolate the incoming power lines from other system cables and wires. Noise can couple onto the filter wires if system cables/wires are routed too close to the filter's input wires, bypassing the filter.
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About US
Premier Filters is a global manufacturer and designer of AC and DC Power Line Filters. Premier Filters leverages over 70 years of combined experience in delivering the highest quality and performance products while providing unrivalled customer service and Premiercommitment.Filters Inc. headquartered in Southern California, manufactures in Asia and the United States to meet the cost and schedule demands of today's global companies.
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10 Contact US CONNECT WITH US Phone : +1-657-226-0091 FAX : ADDRESSEmail+1-657-223-6495:info@premieremc.com-PremierFilters,Inc. 952 N. Elm Street, Orange, CA 92867