Columns

Ferrites for EMI suppression are usually chosen looking for high (resistive) impedance at the...

Digital and power electronic systems can reduce the radiated and conducted emissions profile using spread spectrum techniques. Typically, no more than 10-12dB can be obtained with those techniques but the result can be useful to comply with regulations.

As part of our series exploring the latest industry insight on effective product safety label design and symbol usage, this month’s topic focuses on the trend towards multi-symbol labels, showing both hazard description AND hazard avoidance visually – and ultimately moving to a fully graphic approach.

On a recent visit to Beijing I picked up a copy of the China...

During the 1930s, 1940s, and 1950s, Underwriters Laboratories did basic research in the field...

Back in my novice days, computers puttered along at 4.77 MHz and we rarely...

Last year’s "On Your Mark" columns discussed how specific symbols have changed over time...

By the time you read this, I will have completed my Fall semester undergraduate...

If your product has a flyback power supply and radiated EMC problems are observed...

The measurement of Specific Absorption Rate (SAR) is arguably the most complex of compliance issues, affecting thousands of new device models and billions of radio transmitters.