Author Topic: Micro drsstc  (Read 1135 times)

Offline oneKone

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Re: Micro drsstc
« Reply #20 on: April 11, 2018, 02:38:56 AM »
Cheers mads.

Racing sparks are a bit of a problem, I've tried spacing the secondary 15mm up from its original position. This seems to have fixed the problem, so my coupling would be less now but I'm not sure by how much. I have one last part to make for the coil so hopefully I'll get a video up tonight.


Offline oneKone

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Re: Micro drsstc
« Reply #21 on: April 11, 2018, 03:35:23 PM »
The coil has had its first successful full midi run! The song was about 40 seconds long. The fan I put on the heatsink might need to be upgraded, it keeps it cool enough for one track but there's always room for improvement.

/>

Offline oneKone

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Re: Micro drsstc
« Reply #22 on: April 21, 2018, 03:21:54 PM »
With the death of half the fullbridge it's time to redesign the layout to be more modular!

Offline oneKone

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Re: Micro drsstc
« Reply #23 on: April 23, 2018, 12:55:43 AM »
i think this may be the last update on the micro drsstc, unless i make a new base/frame for it.

Half of the Fullbridge died from the ocd limit being set too high, setting the ocd with a theoretical limit is obviously not the way to go but with free air streamers it was fine on this small coil. I've now set the ocd at about 210A (measured with an oscilloscope).

this was the run that killed it, nothing spectacular just a silent death!
 

Offline Mads Barnkob

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Re: Micro drsstc
« Reply #24 on: April 23, 2018, 09:25:05 PM »
RIP micro DRSSTC!

You got some good results while it lived, but it also serves to show that when things are pushed too hard they are short-lived :)

You just need something with a larger mass to absorb the impulse temperature rises, get bricked!
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline oneKone

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Re: Micro drsstc
« Reply #25 on: April 24, 2018, 09:59:13 AM »
RIP micro DRSSTC!

You got some good results while it lived, but it also serves to show that when things are pushed too hard they are short-lived :)

You just need something with a larger mass to absorb the impulse temperature rises, get bricked!

sorry, i'm an idiot! 

The coil lives happily now with a new current limit set, although i haven't tested it with multiple ground strikes. i know in the future it will die again because i do hammer it quite a bit! but igbts are cheap from aliexpress. i'm keen to get my hands on a pair of cm300du-24 bricks! The new coil start is very close........

 

Offline Mads Barnkob

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Re: Micro drsstc
« Reply #26 on: April 24, 2018, 12:34:11 PM »
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline oneKone

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Re: Micro drsstc
« Reply #27 on: April 24, 2018, 02:42:09 PM »
cheers mads, i ended up buying all 3.

Offline Hydron

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Re: Micro drsstc
« Reply #28 on: April 24, 2018, 04:36:38 PM »
Good buy assuming they are as described! Seemed to be the same cost to ship down under as to non-german Europe, which makes it far less painful if you're buying from that far away.

I am using the exact same modules in my 160mm coil at ~750A/70-80kHz, and I suspect I could push them significantly further (but already got >2m streamers at that current).

Offline oneKone

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Re: Micro drsstc
« Reply #29 on: April 25, 2018, 02:58:51 PM »
i'm also hoping they work and get a decent running life. i ended getting 4 euro off each brick! as for shipping..... we aussies are a custom to paying a lot! in my opinion one of our main postal services (auspost) are the biggest joke going, but i could go on all night about them!

i'll have to re-read your drsstc thread, i would love to get around 2m streamers but i may be limited..... unless i do full power runs at the front of my house!

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Re: Micro drsstc
« Reply #29 on: April 25, 2018, 02:58:51 PM »

 


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