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load coil

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load coil

A device placed into a telephone circuit between the end office and the subscriber to step up the voltage and compensate for signal loss due to bridged taps. The load coil is an inductive device that acts as a high-frequency choke and must be removed if the line is converted to high-speed digital use. When digital service is moved closer to the customer, and the analog lines become shorter, the load coils are no longer required. See bridged tap.
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References in periodicals archive
(1) Also, best performance comes with phone lines that have low noise, no bridge taps, no load coils, no wire gauge changes, and low attenuation.
Similar restrictions apply to xDSL wiring as to wiring used with 56-kb/s modems: no bridge taps, load coils, or wire gauge changes are allowed.
The amplifier with a WPT network, which is composed of source and load coils and two resonant coils, can eliminate discrete components for harmonic rejection filters and dc feed inductors.
his ergonomic lifter-tilter lets one person pick-up and load coiled products into assembly and packaging equipment.
The module enables technicians to identify line breaks, electrical shorts or the presence of load coils that could impair DSL service.
Bridge taps and load coils affect ADSL communications dramatically.
Also, it counts up to six load coils, sends a VF tone, and detects opens and splits and their location.
Additionally, the basics of troubleshooting non-functional loops, how to determine a testing direction, and techniques for determining the number of load coils and the location of loop impairments are not as complicated as might be imagined.
Load coils are not allowed, either in the working path or on bridged taps.
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