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4 changes: 2 additions & 2 deletions
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config/radioburza/brezen_2024.ini → config/events/radioburza/brezen_2024.ini
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4 changes: 2 additions & 2 deletions
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config/radioburza/leden_2024.ini → config/events/radioburza/leden_2024.ini
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[Settings] | ||
title = HFVTTC V1 | ||
page_title = HFVTTC V1 | ||
image_folder = pictures/projects/hfvttc_v1 | ||
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[Core] | ||
template_path = assets/template.html | ||
css_path = assets/style.css | ||
js_path = assets/script.js | ||
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[Output] | ||
output_folder = docs/gal/projects/hfvttc_v1 | ||
images_directory_name = images | ||
core_directory_name = core | ||
output_file_name = index.html | ||
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[Index] | ||
enabled = true | ||
page = assets/index_template.html | ||
base_directory = docs/gal/ | ||
base_index_name = index.html | ||
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[Index.special_rules] | ||
generate_project_index = true | ||
generate_project_root_index = true | ||
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project_root_index_name = dir.html | ||
project_index_name = index.html | ||
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root_index_name = index.html | ||
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[Embed] | ||
image = https://zap.devvie.cc/gal/projects/hfvttc_v2/images/2.jpg | ||
url = | ||
title = HFVTTC V1 | ||
description = Finally getting around to building a sort of vacuum tube tesla coil | ||
color = #ff8156 | ||
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[Pagefile] | ||
enabled = true | ||
source = pagefiles/projects/hfvttc_v1.md |
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[font-size = 1.3em]{ | ||
Despite collecting tons of tubes, | ||
i havent done much with them other than small experiments | ||
} | ||
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So i have finally decided to build some sort of a tesla coil, starting with an HFVTTC | ||
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whether or not this was a good starting point, i have no idea but the schematic is rather straight forward | ||
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My design was based on this one by uzzors2k | ||
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![Epic toob schematic](__IMAGE__/schematic/uzzors2k_hfvttc.png) | ||
![showcase of my build](__IMAGE__/general_4.jpg) | ||
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--- | ||
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The difference was mainly that i used a different tube, and handle the g2 power differently | ||
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I am for now using **GU50 soviet pentode**, while he used a way more powerful GK-71 | ||
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As for the G2 supply, i am currently using rectified mains (filtered) which is put | ||
across g2 and the cathode instead of a large resistor which just connects G2 anode potential | ||
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![g2 power supply](__IMAGE__/supply_1.jpg) | ||
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The issue here is that i only run this circuit at about 80V (because the HV part is MOT powered and i dont want to overvoltage the GU50 much) | ||
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[color: red][This leads to a low G2 voltage of only about 110V, i plan to fix this by using CW voltage multiplier in the future] | ||
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--- | ||
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For another change i also used a different capacitor in the feedback which is only about 5kV and its capacity is way too large | ||
this should not be much of an issue unless i short out the jarlid:tm: capacitor while running at high powers, but i do plan to replace it | ||
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I also think that i should up the number of turns on the L1 (first) inductor, as that seems to have worked better for others | ||
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![feedback ceramic capacitor with a jar lid attached](__IMAGE__/feedback_2.jpg) | ||
![feedback setup](__IMAGE__/feedback_1.jpg) | ||
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## some results | ||
For now i havent been able to get much, but i plan improve on the output with the aforementioned ideas | ||
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I was able to get some neat images of what is seemingly a neon bulb being excited in an interesting way | ||
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Despite being filled with neon (for the most part) giving a deep orange color in the EMF of my standard SSTC | ||
it gives off a blue glow here.. this could be caused by some mixed in argon or mercury vapor (no droplets seem to be forming inside the glass) | ||
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Heres a picture with the tube being somewhat spaced from the *"antenna"* | ||
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![blue glowing bulb oooo](__IMAGE__/output_1.jpg) | ||
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And here it is placed right next to the *"antenna"* where you can see some of the neon orange starting to show at the contact point | ||
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![blue glowing bulb oooo](__IMAGE__/output_2.jpg) | ||
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--- | ||
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[color = orange][This causes lots of interference, a radio far away across the house is unusable][color = red][!] | ||
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Hopefully i can get some more arcs (over several cm) out of this circuits soon:tm: and post some updates here. | ||
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--- | ||
### sidenote | ||
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A fun way to start a project is to realize some of your components are unusable | ||
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For me, i found out one of my MOT has died and that my microwave diode is dead aswell | ||
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This lead me to make an abomination of a diode (which somehow didnt explode yet) out of 1N4007 diodes | ||
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As for the MOT i just used a different one after realizing trying to save it is futile.. | ||
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![diode replacement zoomed out](__IMAGE__/supply_4.jpg) | ||
![diode replacement](__IMAGE__/supply_2.jpg) | ||
![rip mot](__IMAGE__/supply_3.jpg) |
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