A project log for Nixie Tap

Minimal USB powered Nixie display and IoT button

mladenmladen 11/13/2019 at 22:253 Comments

Transformer is custom made, hand wound.

To start, you'll need:

  1. Ferrites: 2pcs of TDK B66305G0040X127 (E13/7/4 core halves, material N27, 0.04 mm gap)
  2. Coil Former: B66306C1010T001
  3. Primary: 0.3mm diameter enamel wire
  4. Secondary: 0.1mm diameter enamel wire

Instructions (warning: CRAPPY PICTURE QUALITY :( )

You're done with the primary winding. Now onto the secondary.

Again, sorry for  the eye-cancer-inducing photos, these will have to do the job. For any questions, please write!


Vlad Conut wrote 11/19/2019 at 08:39 point

oh sweet, gonna make myself some transformers now :D

if time permits maybe you can go a bit into details on how you come up with the number of turns for primary/secondary, how was the wire diameter calculated and so on.

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Akhan Almagamb├ętov wrote 11/19/2019 at 01:23 point

I really appreciate you posting this tutorial!  Thank you so much!

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Aleksey wrote 11/14/2019 at 18:43 point

Hi. Thanks for sharing your experience. It was very interesting for me. Thanks again.

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