Author Archives: Mads Barnkob

About Mads Barnkob

Electrician, programmer, experimenter and amateur scientist with experience in industry automation, programming and all kinds of high voltage generating electronics. Administrator of www.kaizerpowerelectronics.dk and the high voltage community forum www.highvoltageforum.net

Building the OpenTheremin V3

Introduction I received a bare board and some of the SMD components for a OpenThereminV3, it is a semi-assembled kit that can be bought from Gaudi ( http://www.gaudi.ch/OpenTheremin/index.php?option=com_content&view=article&id=180&Itemid=115 ). The board I got was from a previous unsoldered kit where you … Continue reading

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Happy New Year 2018 slow motion special!

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)

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

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

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

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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Ericsson Radio Base Station RBS3206 teardown

The RBS3206 macro is an indoor Radio Base Station with one to four carriers and one to  six sectors at 20/40 Watt RF output power per carrier. All the boards that I have comes from the middle row in the … Continue reading

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5kJ capacitor bank fired at 2kJ charge

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

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)

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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