SH72, a compact soldering iron or TS100 for
I think many people know the compact TS100 soldering iron, which came out a few years ago. Small and powerful, but... very expensive. And not long ago, a very similar-looking but much cheaper SH72 went on sale. Of course, it’s more basic, with no display, buttons, or option to play Tetris, but it’s still perfectly functional.
Choetech 100 W Power Supply (Charger) for $34.13
27-02-2020, 13:16
The Choetech store manager sent me a deal and a coupon for a new charger (power supply) featuring GaN technology, two Type-C ports, and up to 100 W of power.
An inexpensive kit for building a T12 soldering station
27-02-2020, 02:27
I've been asked more than once about an inexpensive, decent option for a basic soldering station. If you want something reasonably good, T12-tip stations are probably the way to go: they're more convenient than the rather old 900 series. Today I have a very brief review of just such an option.
PEF-301 phase selector switch from Novatek-Electro
25-02-2020, 11:51
Not long ago, I was asked to review an interesting, if rather specialized, device: a phase selection relay. Today, I’m not only reviewing the relay itself, but also adding a little extra that I think is quite significant. But as usual, it’s best to read the full review, which includes a description, a closer look, and a teardown.

10 5538
Finishing the LCR Meter + Switching to Battery Power

10 5538
21-02-2020, 20:38
The LCR meter board has been sitting around for probably two years now. Everything would be fine, but it’s not very convenient to use in its half-finished state, so I decided to finish the case and rework the power supply while I was at it.
Protection board for 3S battery packs
21-02-2020, 01:29
For one of my projects, I bought a small protection board. Its specs are modest: 3S, up to 10 A. In fact, I needed even less, so today I'm not just reviewing the board, but also making a small modification.
Fnirsi FNC88 USB Tester
15-02-2020, 19:57
The FNC88 USB tester, which has been shown many times before, has finally made its way to me. It’s made by a company with a very strange name: Fnirsi. Inspection, description, tests, conclusions—as usual.
4S 40A protection board for LiFePO4 and an example of using it in a UPS
11-02-2020, 03:42
I recently posted a review of 32700-size LiFePO4 batteries, but as you can imagine, you can't use batteries without a protection board, so I ordered one too. Since I had it on hand, I put together a short review in case it might be useful to someone.
CHOETECH Q4004 power supply (charger) with 60 W PD support
5-02-2020, 00:15
This is the second product from the Choetech store that they sent me to review and test. This time, I’ll be taking a closer look at a charger (power supply) rated for up to 60 W, with Power Delivery support and a USB Type-C output. As usual, I’ll inspect it, run some tests, take it apart, and share my conclusions.








