I got my hands of a old NEBB (Norsk Elektriske Brown Boveri) medium voltage fuse. It is rated for 7200 V, 200 A and 350 MVA. The medium voltage fuse originates from before 1988, where NEBB was merged with ASEA into ABB. Medium voltage fuses are used at the secondary side of distribution transformers, which […]
Teardown of a Medium Voltage Fuse (7200 V / 200 A) Read More »
The Toshiba Toughbook CF-18 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 was decommissioned and scrapped by the company that owned it. More than
Taking a look at the Toshiba Toughbook CF-18 vintage computer Read More »
This is the third experiment with the bank of 35 electrolytic capacitors connected in series. Results are better than the theoretical estimate, which was 6000 A limited by ESR. So getting just over 7000 A is good, but the result is still a little tame when it comes to action. These tests had the bank
5kJ Capacitor Bank Fired at 12kVDC / 3.5kJ Charge Read More »
Here I am doing a teardown on a IBM blade server HS22V 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 Horizontal-compact-form-factor (CFFh) expansion card connector, one Vertical-combination-I/O (CIOv) connector, and one internal USB connector. Microprocessor:
Teardown of a IBM Blade Server HS22V Read More »
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 above picture and unfortunately I did not have any of the diplexers at the top
Ericsson Radio Base Station RBS3206 teardown Read More »
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, due to too weak power supply. More results will follow when a new power supply have been made and tested. All discussion about this bank can
5kJ Capacitor Bank Fired at 2kJ Charge Read More »
I have had the Loneoceans midi2 controller for a while. I just never got around to put it together. Now that 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 MIDI modulator, you can buy it here: http://loneoceans.com/labs/sales/midi2/. Here are 4 videos I
MIDI modulator for DRSSTCs Read More »
In part 2 of the hacking series, I am doing measurements on the IGBT waveforms and voltage/current waveforms output form the quasi-resonant inverter. Part 2 of hacking the IKEA induction cooktop: https://kaizerpowerelectronics.dk/general-electronics/hacking-ikea-2kw-induction-hob/ Discussion of this project is on Highvoltageforum.net thread: https://highvoltageforum.net/index.php?topic=104.0
Hacking the IKEA 2000 Watt Induction Cooktop, Measurements (Part 2) Read More »