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Finally, I finished and posted a video about the BMS short-circuit current tester. This video just got the hell out of me - it was being made for almost six months, and four (fundamentally different) versions of the scheme were tried. The saddest thing is that the final results for the under-test BMS, which I had been going to use in my researches, turned out to be negative - the circuit did not provide shut down in the prescribed ranges of the output current duration and amplitude...
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The type 928 stun gun (very common thing in the segment of cheap multiplier-based electroshockers) investigated. According to the parameters, it turned out to be not so good, as expected, but it sells on Ozone for only a thousand rubles. In the future, I will redo it according to the "evil" (Taser) scheme, there is one interesting idea. Enjoy watching it, everyone!
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As it suddenly turned out, for some reason I forgot to add the news here that I have released two new videos from the series "Gauss Guns" - about the general principles and switching schemes of power circuits of coilguns, as well as about methods for evaluating and comparing electromagnetic accelerators. I'm correcting myself and posting both videos (as links to both YouTube and my VK community). To all those who haven't seen it yet, enjoy watching! ... Read more » |
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The website is coming out of summer vacation! An interesting small transformer was purchased and measured. Its special feature is the armored core design with winding of all windings on one (central) kernel. I measured this transformer and entered the results into my table of inductive components. In addition, I created and tested several schemes of blocking generators for low-power high voltage sources with its participation. Nice viewing! |
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A new excellent sample has been added to the Accelerator Table - Tokamake's TK20-mini. Thanks to the optimization of the coil parameters, the author managed to achieve an unprecedented 127 m/s in the pistol format! In terms of the G form factor, the design ranks 3rd in the Table, and the first in terms of Kx (more than a hundred!). Congratulations on the record! |
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The third part of the series dedicated to Gauss guns is finished! It describes the first step to their optimization - the converterless coilguns. Nice watching! |
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I finished the second series of videos about Gauss guns. It discusses the advantages of this type of electromagnetic accelerators, both real and mythical.
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I posted a new video about the ZVS converter, while it's about modeling and researching the suitability of ZDS for capacitor charging. The second part will be experimental. This mini-series is planned to be the last on the subject of voltage converters, the following videos will be devoted directly to Gauss guns.
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A new series of videos started about Gauss guns. The first one summarizes the principles of operation of such accelerators and their main disadvantage - high cost at low projectile velocity. A more complete description of these and other issues can be found in the "Theoretical articles" section.
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I finished the development and posted a video in my VK-community and Youtube-channel about creating another converter for charging high-voltage caps, this time powered by just one lithium battery. Its feature (which has led to both advantages and disadvantages) is the use of cheap and easy-available components, in particular, a PWM controller and a ready-made transformer from AliExpress. Work on the project was difficult and took a long time - the first version of the converter, despite a l ... Read more » |