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

Eaton PowerWare 20 kVA UPS teardown

Here is a little quick, dirty and early morning junk yard teardown of a 20 kVA Eaton PowerWare UPS system. I have earlier taken some of these systems apart and you can see the differences from there photo galleries: File … Continue reading

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GE AMX-II, mobile 110kV X-RAY system teardown

Teardown of SCR inverter controller, driver and bridge for a General Electric mobile x-ray unit, the AMX-II. Features a 120V battery operated apparatus from 1979 which has a 60 Hz mains inverter and 500 Hz high voltage inverter. All analog … Continue reading

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Hameg 8122 Universal Counter – teardown, repair and test

The Hameg 8122 is a programable universal counter / timer that has 3 inputs. Channel A and B from DC-150 MHz at 300 Vp-p and channel C from DC-1.6 GHz at 5 Vp-p. I accidentally broke a knob off the … Continue reading

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15000$ (1990’s) Sony 3CCD Analogue color camera giveaway! (shipping costs apply)

As a part of Dave from eevblog gave me the opportunity to reach a larger audience through the guest videos, I hoped that I found a new owner for this camera and that it would bring something good to another … Continue reading

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Teardown of a Eaton PowerWare 60kVA UPS system

This is the teardown of a large 2x 60 kVA Eaton UPS system, first is the teardown video and below are some pictures and a little description of the components. Here is a picture of a single 60 kVA system … Continue reading

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Huawei RRU3908 base station circuit analysis (part 2 of 2)

The Huawei RRU3908 is an outdoor Radio Base Station with one to four carriers and one to six sectors at 20/40 Watt RF output power per carrier. Central Processing Units Network communication is handled by a Freescale MPC8321 PowerQUICC2 CPU … Continue reading

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Huawei RRU3908 base station teardown (part 1 of 2)

The Huawei RRU3908 is an outdoor Radio Base Station with one to four carriers and one to six sectors at 20/40 Watt RF output power per carrier. Part 1 is the teardown itself with a walkthrough of different design highlights. … Continue reading

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Ericsson RBS 2216 Auxiliary Power Units teardown

I have updated a old teardown post with a new video about the auxiliary power units. Read the old post and see all the details, pictures and amplifier teardown here: http://kaizerpowerelectronics.dk/teardown/ericsson-rbs-2216-900-mhz-base-station-teardown/

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Moving to a new lab (Part 3&4) Work shop tours

Here you get a short glimpse of the new space for the work shop. This is part 3 and 4 in a series of videos on moving out, moving in and setting up the new lab / work shop. I … Continue reading

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Teardown of a Merlin Gerin Pulsar ESV 22+ UPS

Here is a new teardown of a small 2.2 kW UPS that provided backup power for a small radio system used by a taxi company.

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