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This year begins with encouraging news. The Accelerator Table was replenished with two bench-type models at once: EMA-5 and ЩУМ-191. Generally speaking, bench devices are a bit off-top for the Table, where I try to add only portable samples of Gauss-guns. But here it's worth it, since the second of the models, ЩУМ-191, has absolutely record-breaking projectile velocity parameters - 191 m/s on a 7 mm iron projectile. Moreover, a speed of 203 m/s has been achieved on a permend ... Read more » |
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Merry Christmas and Happy New Year to everyone!
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The second part of the series about Electroshokers added to my YouTube. Nice viewing!
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A new series (most likely, of 3 parts) set on my YouTube channel, dedicated to Electroshok devices (ESDs,stun guns, conducted energy devices tasers etc). This is a little off-topic for my site, but I have been intetersted in this theme for so long time that decided "to put my thoughts on a paper" at last. The first video describes the requirements and parameters of ESDs. Nice viewing! |
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Development of the saturation current meter in its normal form is completed - on an industrial PCB, in a more compact and accurate layout. The current-sensing resistors are now made in two (and not three, as previously) ranges - 20 mOhm and 1 ohm. Switching between the ranges is carried out by a button and indicated by a red LED.
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Finally, I finished a video discussing an important topic - the role of power supply voltage in electromagnetic accelerators. In addition, I'm demonstrating there a special "two-shoulder" circuit for obtaining double HV voltage on series-connected batteries of electrolytic capacitors. The video editing began in the summer, as there is a reservation in the introduction :) Have a nice viewing to everyone!
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New small video describing Excel calculator for UCx84x-based capactor chargers added to my YouTube-channel.
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Tom Stanton has developed an interesting multistage catapult accelerator for launching aircraft models. This is the second example of his authorship for such applications. In the first one, the standard method for coilguns was used to accelerate a ferromagnet (in this case, a permanent magnet) with a chain of coils, now the original scheme is applied with acceleration not of a magnet, but of a coil in a field formed by a chain of fixed magnets. This construction attracted my attention, because I myself have been thinking a lot in this direction lately. Perhaps I will release a new video on this topic soon... ... Read more » |
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A description of a device for measuring saturation currents of inductive elements added to my YouTube channel. A very useful and even necessary thing in the development of any transformer- and choke-based voltage converters.
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Tokamake has constructed new brilliant TK-20 coilgun and published Youtube-video about it. The model is added into the Accelerator Table. Due to high-power voltage converter, high fire-rate of 2 shot/sec is achieved (in reduced energy mode), which is decent for capacitor-driven coilguns. Recuperative circuit led to 16 % efficiency.
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