First run + effect on daughters shoes (!)

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First run + effect on daughters shoes (!)

Postby steenge » Sun May 22, 2016 2:11 am

After 4 IGBT's and one exploded fuse (and I mean exploded!) everything is running smoothly.

Check out how the EMI is affecting my daughters shoes. Cool! :)

Watch on youtube.com
steenge
Tipsy Toggle Switch
 
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Re: First run + effect on daughters shoes (!)

Postby Tunes » Wed Jun 29, 2016 4:21 am

After 4 IGBT's and one exploded fuse (and I mean exploded!) everything is running smoothly.

What caused the above failure and how did you fix it?
Tunes
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Re: First run + effect on daughters shoes (!)

Postby steenge » Fri Jul 01, 2016 5:19 am

Actually I didn't find any mistakes. The problem was that the power outlet had poor mains earth, combined with the fact that I put the device on my workbench with no ground plane.

The subsequent tests are done umsing a power outlet, where I trust the mains earth.

For good secondary, two important things:
1. No loose wires inside the coil!! Make sure to shorten the wires connecting the ends as much as possible.
2. Many coats of polyurethan (or similar). I made a jig to ease the application using an old powerdrill connected to my bench powersupply. After applying each layer, leave the jig rotating slowly to ensure even coating. At least 5 layers.

https://www.instagram.com/p/BFY37eckNaU/
steenge
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Posts: 6
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