loading coil


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loading coil

[′lōd·iŋ ‚kȯil]
(electromagnetism)
An iron-core coil connected into a telephone line or cable at regular intervals to lessen the effect of line capacitance and reduce distortion. Also known as Pupin coil; telephone loading coil.
A coil inserted in series with a radio antenna to increase its electrical length and thereby lower the resonant frequency.
References in periodicals archive ?
An optional load coil detector is available to help save installer time by verifying the presence of DSL transmission-killing loading coils.
Local loops longer than three miles require loading coils.