A Short History and Review of Shielded Cables On GlobalSpec

From Calmont Wire & Cable, Inc.

In the late 1800s, as the use of electricity was first being used for communications, interference reared its ugly head. The imperative for some form of mitigation became apparent. The first attempts involved wire spacing. Bare wires on wooden poles were simply spaced farther apart to reduce interference. When the wires entered buildings and were forced closer to each other, twisting the pair was the preferred technique for reducing interference. Look at early pictures of New York City; the sky is dark with thousands of wires for telegraph and telephone wires. Then radio came along, and radio broadcasts could be heard coming from the telephone wires. The need for shields became a problem begging for a solution.

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Products & Services

Litz Wire

Litz wires are constructed of individually insulated magnet wires that are either twisted or braided into a uniform pattern to minimize power loss.

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Network Cables

Network cables are used in the transmission of data across networks. Choices include Fibre Channel, FireWire or IEEE 1394, GPIB, serial, parallel, patch, SCSI, Ethernet and USB.

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Computer Cables

Computer cables are used to connect monitors, keyboards, printers, hard drives, and other peripherals to computers.

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Control and Instrumentation Cables

Control and instrumentation cables are used to supply power to devices, such as analytical instruments and process controllers, used in control and instrumentation systems. They are typically designed for specific industrial protocols and are equipped with shielding to prevent electrostatic or electromagnetic interference between the enclosed wires and external fields.

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Coaxial Cables and Triaxial Cables

Coaxial cables have an inner conductor insulated by a dielectric material and then surrounded by an outer conductor that is shielded with braid or foil. Triaxial cables add an extra layer of insulation and a second conductive sheath. They are commonly known as coax and triax, and are chosen because of their protection against external electromagnetic interference.

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Product Announcements

G10S BENCH WIRE TWISTER

Eraser Company, Inc.

Eraser's Model G10S Bench Wire Twister can twist pre-stripped stranded wires, twist strands of two or more wires together, twist wrapped shields on coaxial cables and tighten the twist of already... (read more)

EMI shield with cutouts, manufactured by Peridot

Peridot Corporation

This Peridot-manufactured shield is stamped on a progressive punch press die on a 60-ton straight-side punch press. This die has produced several hundred thousand shields to date and still has plenty... (read more)

ESAB Stainless Steel Filler Metals

ESAB Welding and Cutting Products

ESAB offers the most complete line of stainless flux cored wires in all the alloy compositions including 304, 308, 309, 316 and 317. (read more)

Value Added Services..barcoding, brading,cutting

Galaxy Wire and Cable, Inc.

Galaxy Wire & Cable - In addition to being an industry leader in custom cable construction and a stocker of many commercial, UL and Mil-Spec products, Galaxy Wire & Cable has a full line of... (read more)

Limitless™ WOI line from Honeywell

Carlton-Bates Company

No wires. No limits. The new Wireless Operator Interface expands Honeywell's Limitless™ wireless portfolio by providing a packaged pushbutton solution for manufacturers and OEMs. This series... (read more)

Honeywell's Limitless™ Wireless Operator Interface

Carlton-Bates Company

Fiber Optic Multiplexers

S.I. Tech, Inc.

S.I. Tech multiplexers combine several electrical signals to light, allowing data to be transmitted over fiber optic cabling. This enables data to be transmitted farther, reduces EMI/RFI interference,... (read more)

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