Electronics and technology blog    /    Materials for June 2020 year

Today, a very brief review of a fairly ordinary voltmeter, but one that can be mounted on a DIN rail—that's actually one of its main distinguishing features. As always, the review includes an inspection, tests, a teardown, and an explanation of why I needed it.

Some time ago, a new version of the converter called the RD6012 went on sale. Since it also needs a power supply, I ordered a suitable one from the same store—in this case, an 800 W unit with an output voltage of 70 V. This review won't be very long. You'll see why as we go, but there will still be some tests.

Some time ago, one of my readers asked me for advice and, while we were at it, offered to send me some INR18650-25R batteries for testing. He had bought them on AliExpress several years earlier. The test was done simply “out of curiosity” and wasn’t intended to serve any practical purpose, but I did find a few interesting things.

This device is hard to classify as a “residential” product, although of course it can certainly be used that way. Its main applications are small businesses, office buildings, rental properties, and so on. Even so, I found the device interesting in its own right, and I’m planning to use it at home. But you can read all about it in the review.

Yes, friends, the cycle-life test is back, and this time we have a genuine Sanyo NCR18650GA battery. But this isn't just a test: we're testing it under conditions the manufacturer doesn't recommend—in other words, we're deliberately killing the battery and seeing how it holds up.

After reviewing two phase-selection relays, I managed to arrange for a couple of interesting devices to be provided for review. One is aimed at the "household" market, while the other is more geared toward small businesses. Today I'm reviewing the first one, the RN-263T voltage relay.

Back in March, I was asked to write a review of the 1C15 mini oscilloscope. I can't say I was particularly eager, but I was curious to tinker with it. There were two reasons: it's a popular model, and I've also been asked several times about a simple oscilloscope for basic work on power supplies. Well, I finally got one and did a few tests.

Very briefly. When Ali has sales and offers coupons, it's a good time to buy relatively expensive items. More about the coupons below.

At last, I’ve got my hands on a PD power supply that can deliver up to 100 W from a single output. As usual, I’ll take a look, test it, and of course, take it apart.