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April 2017

Absolute Safety

Recently, a colleague remarked to me, “Philosophically, of course, there is no such thing as absolute safety.” Could this be true? Is there a situation where a man could not possibly injure himself?

Spectra of Digital Clock Signals

Reducing the duty cycle (the pulsewidth) reduces the low-frequency spectral content of the waveform, but does not affect the high-frequency content.

Transporting Lithium Batteries

Transported lithium-based batteries are divided into two types: lithium-ion found in mobile phones and laptops, and non-rechargeable lithium-metal used in medical devices and a number of consumer grade AA, AAA and 9V batteries.

All Battery Tests are Not Created Equal (Even when they have the same name!)

Compliance testing can be a very expensive endeavor and also a very confusing one. And when it comes to lithium ion cells and batteries, the expense is magnified by the number of samples needed for testing.
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Getting Ready for the EU’s Radio Equipment Directive

In this article, we will define what equipment is covered by the RED, followed by the procedures for conformity assessment to the Essential Requirements of the Directive.

Using EMC Software Tools for Real World Printed Circuit Board Designs

Software tools can give the EMC engineer a better chance to pass EMC requirements the first time.

The Internet of Bicycles

China’s homegrown “WeChat” application has nearly 900 million users. Need a car? Pay a check? Send someone some cash? Rate a dining venue? Make a video call? Send an endless series of silly emojis? WeChat is the platform, at least in China. It’s IM, Facebook, Tripadvisor and Skype all in one. And a gateway to to the Internet of Things.

Evaluate Shielding Effectiveness With Your VNA

The effectiveness of different materials for shielding can be tested using near field probes and your vector network analyzer (VNA).
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The Latest Updates to the ANSI and ISO Product Safety Label Standards

Find out what you need to know to reassess your company’s product safety labels based on the latest revisions of ANSI Z535.4 and ISO 3864-2.

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