Electronics and technology blog    /    Materials for 14.03.2018

Many of you know how much I enjoy taking a closer look at different power supplies. This time, I have a somewhat unusual power supply on my bench—at least, I haven't tested one like this before. In fact, I don't recall ever seeing a review of this type of power supply, even though it's an interesting design, and I've built similar power supplies myself in the past. I decided to order it purely out of curiosity, thinking it might come in handy. More on that in the review.

So, today I have the second review in a series of reviews of power supplies made by Mean Well. This time I chose an open-frame power supply, i.e. a board without an enclosure. As with the last one, it has its own little “twist,” but you can read all about it in the review, which, as usual, includes tests, oscilloscope traces, and conclusions. All in all, I think anyone interested in good power supplies won’t be disappointed.

Just a few days ago, I posted a review of an advanced "USB tester," but it wasn't the only thing in the package: there was also its closest equivalent, a tester from Power-Z. The two testers have a lot in common, and even cost the same, but are they really that similar in use?

I've already posted reviews of two basic USB testers. Though, in my opinion, the very term “USB tester” is rather vague. But this time I have a much more advanced device in my hands, one that can reasonably be called a measuring instrument.