Columns

Take time to check for EMI, efficiency, temperature, safety, immunity, or any other requirement in your product.

For the purposes of safety, what is “working voltage,” and what is its relevance to the safety of the equipment?

This article is an update of a previous piece that was published in the...

In a recent discussion with a third-party certifier, there was an implication that a...

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...