DIY Transistor Voltage Tester with TDK CXA-L10A

If you're interested in building a DIY transistor withstand voltage tester, check out this article.

The LCD backlight driver bar on industrial control equipment has a long lifespan. You can either use it to create a lighting lamp or, as suggested in this article, DIY a transistor withstand voltage tester!

You can opt for a compact one, such as the TDK CXA-L10A. After researching online, we found that it has a DC 5V input and an AC 900V output.

After rectifying the wiring, the measured output is only around 260V. You can then apply an 8x multiplier and measure an output of over 1900V. This value is sufficient for your needs.

You'll also need a mobile phone lithium battery.

You'll need to make a DIY lithium battery charging board, which you can refer to the diagram below.

In addition, you'll need a 2000V voltmeter.

Once everything is ready, you can start assembling. The assembly process has been omitted here.

Once assembled, the no-load voltage is 1850V.

When measuring a 16V SMD voltage regulator, the result is as follows:

For the 2SD1376K, the official withstand voltage is 120V, but the actual value is 264V, which is within the acceptable range!

The main switch is on the side, as shown in the diagram below.

The charging port is on the left side, as shown in the diagram below.

That's it, you're done!