Author Topic: a typical sstc half bridge design, any considerations or tips?  (Read 506 times)

Offline eli

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here's the schematic, a standard half bridge tesla transformer, any improvements or tips? the circuit is ready but i didn't tested it yet.
P.S. i don't have a scope.
P.P.S my first secondary it will be tested on is 230khz, with 35cm outer diameter and 10cm tube diameter topload and 11x30cm secondary with 0.315mm wire.
P.P.P.S it will be eventually swapped to little 5x15cm winding with 0.15mm wire and 15cm outer diameter and 6cm tube diameter topload, which gives ~450khz.
« Last Edit: July 19, 2021, 12:30:21 AM by eli »

Offline Mads Barnkob

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Re: a typical sstc half bridge design, any considerations or tips?
« Reply #1 on: July 19, 2021, 12:15:43 AM »
It does not seem like you can link to that schematic, from outside of discord. Upload the schematic to the forum in your post.

I just get:
<Error>
<Code>AccessDenied</Code>
<Message>Access denied.</Message>
<Details>Anonymous caller does not have storage.objects.get access to the Google Cloud Storage object.</Details>
</Error>

I put together a small SSTC design guide, did you take a look at that? https://kaizerpowerelectronics.dk/tesla-coils/sstc-design-guide/
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline eli

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Re: a typical sstc half bridge design, any considerations or tips?
« Reply #2 on: July 19, 2021, 12:35:18 AM »
hi! yes i did. also, just recently i did a test and it turned out that the 12cm primary and 16cm primary doesn't make any difference. but as i know, the sstc must have as tight coupling as possible. (first problems)

Offline eli

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Re: a typical sstc half bridge design, any considerations or tips?
« Reply #3 on: August 06, 2021, 09:23:42 AM »
update: it works, with 5 turns on the primary without any ballast, from 270v it makes 19 to 20cm spark, the supply is just bridge rectifier without any filtering. now, i'm wondering, if i pick 4 turn primary, wouldn't the peak current be too high? for irfp460lc transistors? also, i tried igbt, but seems like it can't work properly on 350khz frequency range.

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Re: a typical sstc half bridge design, any considerations or tips?
« Reply #3 on: August 06, 2021, 09:23:42 AM »

 


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