One of the most effective methods to reduce EMI in high-frequency cables is shielding. High-frequency signals tend to radiate ...

For example, our general rule is to design cables so they will withstand more than 10 million cycles on a special bend-and-twist machine and on what we call a tick-tock test.

I have come across several times, though, a cable that only has 2 twisted pair of cables with only 4 of the pins being used and the remaining pins of the RJ45 connector left open.

The cables are also available in impedances of 85? and 100?. TYCO ELECTRONICS, Harrisburg, PA. (877) 623-4766.

Twist it: A cable-shaped lithium-ion battery powers an LED display even when twisted and strained. The lithium-ion batteries keep working even when tied into knots and otherwise abused.