Yearly Archives: 2019

750W Victron Solar Project – 60 Days Performance – Part 4

In part 4 I take a look at the efficiency and look at the performance over the last 60 days

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Nokia Siemens Flexi 3x90W FXEB 1800MHz base station teardown: Power amplifier (part 1 of 2)

Teardown of a Nokia Siemens Networks Flexi Multiradio base station. This have been in service as a 3 antenna system for mobile telecommunications. GSM/EDGE, WCDMA/HSPA and LTE capable. 3×90 Watt output power. All high resolution pictures will be published with … Continue reading

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How To Make a Stencil For Spray Paint With Cheap Hand Tools

How to make a stencil template out of metal sheet, reusable and very sturdy. Can be used for spray or brushed on paint. No power tools, only cheap hand tools, a laser printer and clothes iron. I highly recommend using … Continue reading

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ESAB Power TIG 200 Welder Teardown

A teardown of a ESAB Power TIG LTR200 welder, a run down of the current paths in the system and I show which parts I kept.

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IBM ThinkPad A20p, from 2000. Vintage Computer Teardown.

Standard Features Intel Mobile Pentium III 700 or 750 MHz CPU ATI Rage Mobility 128 with 16MB 15.0″ TFT display with 1400×1050 resolution 128MB PC-100 memory standard (512MB max) 18 or 20GB HDD

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Teardown of Danfoss VLT6000 4kW Variable Frequency Drive

A teardown of a Danfoss VLT6000 4kW VFD, a run down of the current paths in the system and I show which parts I find to have a value. Datasheet on the unit: https://www.danfoss.com/en/products/ac-drives/dds/vlt-and-vacon-legacy-drives/vlt-6000/#tab-overview

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Floppiclene! A Electronics Cleaning Relic of the Past.

I found a old 3.5″ floppy drive cleaning kit and tried it out on a defective computer/floppy drive/floppy that I had. It would constantly ruin “new” disks and leave them with few kb of useful space. It also failed horribly!

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Siemens Polyphos 30, X-RAY Inverter and Control Panel Teardown (Part 3 of 3)

Teardown of the Siemens Polyphos 30 X-ray systems control panel including computer, safety functions, HMI and high voltage inverter circuit.

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Siemens Polyphos 30, X-RAY Collimator and Image Plate Teardown (Part 2 of 3)

Teardown of the Siemens Polyphos 30 collimator and image plate. Collimator had an interesting moving blinds design with a lot of gears, pulleys and strings. Image plate has a lead grid and some kind of sensor.

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Siemens Polyphos 30, X-RAY 125kV head teardown (part 1 of 3)

Teardown of the Siemens Polyphos 30 X-ray head which contains step-up transformers, voltage multipliers and a rotating plate x-ray tube and a lot of oil! Discussion of teardown and additional pictures: https://highvoltageforum.net/index.php?topic=523.0

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