April 2020

After Cleaning, What I Found… – End of Isolation, Day 42

I have turned my whole workshop around, been in every drawer, box, crate, container, shelf and cupboard. I sorted a lot of stuff, re-found a lot of things and threw nothing out! I start work again, it is no longer required to work 100% from home, but still to be planned to do so if …

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Whats In The Boxes?! – Isolation, Day 40

Sorting boxes, sorting containers and generally just a good way to reuse old packaging materials for storage solutions. The black suitcase like boxes comes from a special calibrated sensor and the small drawers are from fuses for mains electrical panels. How many mystery boxes do you have in your work shop?

3 kW Yaskawa Servo Motor Teardown – Isolation, Day 38

I scavenged a old 4 ton stone polisher machine for the best components and got off with a 3 kW AC server motor + drive, 4+0.55 kW variable frequency drives. In this video I teardown the Yaskawa SGMGH-30DCA6F-OY 2900W AC servo motor. Trying to make the 3 kW servo drive run: https://www.youtube.com/watch?v=Cg3Qx6J6NzU Teardown of the …

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3-Phase IGBT Module Teardown – Fuji 7MBP50RA120 From 3 kW Omron Servo Drive – Isolation, Day 36

I scavenged a old 4 ton stone polisher machine for the best components and got off with a 3 kW AC server motor + drive, 4+0.55 kW variable frequency drives. In this video I teardown the Fuji 7MBP50RA120 IGBT module that consists of 7x IGBT dies, diodes and internal protective circuits. Trying to make the …

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Omron/Yaskawa 3 kW AC Servo Drive Teardown – Isolation, Day 34

I scavenged a old 4 ton stone polisher machine for the best components and got off with a 3 kW AC server motor + drive, 4+0.55 kW variable frequency drives. In this video I teardown the Yaskawa 3 kW AC Servo Drive that let the smoke out in the previous video. Trying to make the …

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3 kW AC Servo Drive From a 4 Ton Stone Polisher – Isolation, Day 32

I scavenged a old 4 ton stone polisher machine for the best components and got off with a 3 kW AC servo motor + drive, 4+0.55 kW variable frequency drives. In this video I try to make the servo motor run despite missing a control panel that was gone from the machine. Teardown of the …

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Variac, Auto-, Vario- and Isolation Transformers – Isolation, Day 28

I give a short introduction to the differences between autotransformers, variable autotransformers and variable transformers. I show my collection of 7 variac transformer / variotransformer in the range from 1x260V @ 2A to 3x400V @ 25A along with a 3x400V 10kVA isolation transformer. 3x400V @ 13A Variac demonstration with data monitor: https://www.youtube.com/watch?v=PqeLLLZTBb8 You might wonder …

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