Blue2 Ring Tester


Blue2 ring tester in action



This ring tester can test pretty-much all common inductors including
low-frequency mains and tube audio transformers for shorted turns.

[CLICK] to see a demo of it on YouTube.
 [CLICK] to download its instructions as a .pdf file.

If you need any more info, click here to send me a message.
See also the non-microcontroller version

Thanks for looking!





Last update: 22nd July 2025