Yearly Archives: 2019

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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750W Victron Solar Project – Power wall and 8 days performance – Part 3

In part 3 I test the setup with all 3 panels connected and look at the performance over the last 8 days. It all consists of: 3x 250W solar panels 1x Victron SmartSolar 100|30 MPPT battery charger 2x Norbatt 12V … Continue reading

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TIG welder teardown. ESAB TIG Caddy 1500i.

A teardown of a ESAB Caddy 1500i TIG welder, a run down of the current paths in the system and I show which parts I kept. Datasheet on the unit: https://www.esab.dk/dk/da/products/arc-welding-equipment/tig-equipment-cc/industrial-equipment/caddy-tig-1500i-2200i-ta34.cfm

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750W Victron Solar Project – All 3 panels test – Part 2

In part 2 I test the setup with all 3 panels connected, it all consists of: 3x 250W solar panels 1x Victron SmartSolar 100|30 MPPT battery charger 2x Norbatt 12V 150Ah batteries 1x 750W 24VDC to 230VAC inverter

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750 Watt Solar Project – Test Setup – Part 1

In part 1 I give a walk-through of my test setup, charging and the Victron app to control the charger over blue-tooth, it all consists of:3x 250W solar panels1x Victron SmartSolar 100|30 MPPT battery charger2x Norbatt 12V 150Ah batteries1x 750W … Continue reading

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