Yearly Archives: 2017

Happy New Year 2018 slow motion special!

Posted on December 31, 2017 by Mads Barnkob

Happy new year to all the readers, followers, subscribers, liker’s and users that has to do with reading, commenting and writing on www.kaizerpowerelectronics.dk or www.highvoltageforum.net I have filmed a small new year special video for you all! See you all … Continue reading →

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Teardown of a medium voltage fuse (7200 V / 200 A)

Posted on December 18, 2017 by Mads Barnkob

I got my hands of a old NEBB (Norsk Elektriske Brown Boveri) medium voltage fuse, rated for 7200 V, 200 A and 350 MVA. My best guess from the company name is that it originates from before 1988 where NEBB … Continue reading →

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Taking a look at the Toshiba Toughbook CF-18 vintage computer

Posted on December 1, 2017 by Mads Barnkob

Here is a laptop, used for field engineering work back from 2006 where it was released. I am doing a quick overview and demonstration of this laptop. A glimpse of computer history to have a record of things, as this … Continue reading →

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5kJ capacitor bank fired at 12kVDC / 3.5kJ charge

Posted on November 23, 2017 by Mads Barnkob

Third experiment with the bank of 35 electrolytic capacitors connected in series. Results are better than theoretical estimate, which was 6000 A limited by ESR, so getting just over 7000 A is good, but the result is still a little … Continue reading →

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Teardown of a IBM Blade server HS22V

Posted on November 5, 2017 by Mads Barnkob

Here I am doing a teardown on a IBM HS22V blade server dated back to 2010. The IBM BladeCenter HS22V blade server supports up to two multi-core Intel Xeon microprocessors and has eighteen memory-module slots, two SSD storage-drives bays, one … Continue reading →

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5kJ capacitor bank fired at 2kJ charge

Posted on October 9, 2017 by Mads Barnkob

Second charge experiment with the bank of 35 electrolytic capacitors connected in series. The bank did however not get charged to more than 50% of its maximum holding charge, properly due to too weak power supply. More results will follow … Continue reading →

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MIDI modulator for DRSSTCs

Posted on August 28, 2017 by Mads Barnkob

I have had the Loneoceans midi2 controller for a while, just never got around to put it together, so now I finally have it boxed up, you can see how that was done here: https://highvoltageforum.net/index.php?topic=114.0 If you want your own … Continue reading →

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Hacking the IKEA 2000 Watt induction stove, measurements (part 2)

Posted on August 13, 2017 by Mads Barnkob

Youtube video part 2 of 5 The second part of the series of maybe 5 chapters on tearing down and hacking a IKEA 2000 Watt induction stove is now published. Click the box below to read the whole article and … Continue reading →

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Hacking the IKEA 2000 Watt induction stove, teardown (part 1)

Posted on July 24, 2017 by Mads Barnkob

The first part of a series of maybe 5 chapters on tearing down and hacking a IKEA 2000 Watt induction stove is now online. Click the box below to read the whole article and get all the details. Hacking IKEA … Continue reading →

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New online calculator: Snubber capacitor calculator

Posted on July 6, 2017 by Mads Barnkob

Calculate the needed snubber capacitance in order to protect your inverters IGBT/MOSFETs from too high swithcing transients, depending on your busbar layout and stray inductance. Try the new online calculator at: http://kaizerpowerelectronics.dk/calculators/snubber-capacitor-calculator/

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