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You may be wondering what this construction is used for. When you work in the field of ultrasonics (in water), it is pretty common that you need to get rid of some air bubbles that adhere to some surfaces. This tool can flush them away with a jet of water. I have already built several…
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These 3D-printed eye diagrams can be used to visualize the size of digital signals on cables. I prepared them for a lecture related to signal integrity. The files are also available on 🌐https://youmagine.com/designs/5f74a596-ee1f-4c5b-bf0d-091f445306e6 These scale models are based on eye diagrams of several digital communication systems, including USB and HDMI. They can be used to…
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I’m sure you know what an IGBT is, but did you know this small device could already save an equivalent of more than 3 years (sic!) of annual global CO2 emissions? Today, I had the honor to listen to the lecture of Professor Bantval Jayant Baliga, the inventor of the IGBT. When he built the…
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Helsinki is a green town, and many animals live here. They have their own crossings, and it can be so crowded that they have their own traffic rules 😂 Most animals hide well during the day, but at night, you can see them. The place is at the intersection of Vaskivuorentie and Louhelantie. 60°15’53.7″N 24°51’51.7″E
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Are you working in science and need to report quantities based on the SI system? When I rehearse presentations with my students or review their reports, I often notice that they need guidance in formatting and typesetting SI quantities properly. I must admit that my years in metrology have made me examine this more closely. I…
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A few years ago, I built a circuit for a simple loudness indicator in a traffic light style. It was a small hobby project of mine, inspired by a teacher with a noisy class. The circuit uses just operational amplifier ICs for peak/envelope detection and averaging, which are all done analog. It is far from…