Power line data signal attenuation device and method
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United States of America Patent
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May 11, 2010
Grant Date -
Dec 25, 2008
app pub date -
Jun 21, 2007
filing date -
Jun 21, 2007
priority date (Note) -
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Abstract
A device and method for attenuating high frequency signals on a power line carrying power is provided. In one embodiment the device may include a toroid shaped core formed of magnetically permeable material and having an inner surface to be disposed substantially around the entire circumference of the power line and a winding formed of a conductor that encircles the toroid. The conductor may include a first spiral coil comprised of a plurality of insulated loops such as concentric loops. The first coil is configured to act as an impedance to high frequency signals traversing the conductor and to allow signals below one hundred hertz to traverse the conductor substantially unimpeded to thereby prevent saturation of the core by the power carried by the power line.
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