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Forums
4hv.org :: Forums :: Tesla Coils
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Minibrute Construction Thread / FAQs

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Wirenut
Mon Jan 21 2008, 12:51AM
Wirenut Registered Member #141 Joined: Sat Feb 11 2006, 01:14PM
Location: Southern California
Posts: 96
beautiful arcs! did you not put a strike rail on your tesla?


Not yet, there has been multiple strikes to the primary, but nothing has died from it so far. Maybe after I pop some IGBTs, I'll be in a bigger hurry to get it done.

you should try to modulate it with audio now. Thats what I wanna do with mine anyways.


Yeah, I know, that would be awesome! I want to do that eventually too, but I haven't quite figured it all out yet. Maybe Dan will make a board kit for it one day?
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Austin
Mon Jan 21 2008, 12:55AM
Austin Registered Member #1169 Joined: Wed Dec 12 2007, 09:16AM
Location: Portland OR
Posts: 251
yes, audio modulation seems very hush hush. However maybe this will help you get started.

Link2

scroll down to audio interrupter. I also got some part numbers if you need them.
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Bennem
Mon Jan 21 2008, 07:25AM
Bennem Registered Member #154 Joined: Sun Feb 12 2006, 04:28PM
Location: Westmidlands, UK
Posts: 260
Wow...some great arcs you got there!
great perfomance and from only a half bridge too!

Have you got any video footage we can view?


Mel
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Wirenut
Mon Jan 21 2008, 09:22AM
Wirenut Registered Member #141 Joined: Sat Feb 11 2006, 01:14PM
Location: Southern California
Posts: 96
Have you got any video footage we can view?


Here's a short clip


]1200907294_141_FT36701_minibrute.wmv[/file]
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HV Enthusiast
Mon Jan 21 2008, 12:30PM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Very nice Wirenut!!! Looks great!
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Bennem
Mon Jan 21 2008, 12:30PM
Bennem Registered Member #154 Joined: Sun Feb 12 2006, 04:28PM
Location: Westmidlands, UK
Posts: 260
Hi Wirenut,
Thanks for posting your clip.

In the clip, is your overcurrent kicking in
or are you just turning on and off your interrupter?

What peak cuurent have you got your overcurrent
set to for that spark length?

once again....great coil!

Mel.
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Wirenut
Mon Jan 21 2008, 05:52PM
Wirenut Registered Member #141 Joined: Sat Feb 11 2006, 01:14PM
Location: Southern California
Posts: 96
turning on and off your interrupter?


Yes.

What peak cuurent have you got your overcurrent
set to for that spark length?


It's all the way up (1000A).

once again....great coil!

Very nice Wirenut!!! Looks great!


Thanks guys!
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Tom540
Tue Jan 22 2008, 05:18AM
Tom540 Banned on 3/17/2009.
Registered Member #487 Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
Wow nice job! I like how when it stops you can hear it echo. Have you tried running it without a breakout point?
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HV Enthusiast
Tue Jan 22 2008, 11:35AM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Tom540 wrote ...

Wow nice job! I like how when it stops you can hear it echo. Have you tried running it without a breakout point?

You don't want to do that. If you don't have a break-out point, the primary current ramps up extremely high and may possibly blow the IGBTs.
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Wirenut
Tue Jan 22 2008, 07:15PM
Wirenut Registered Member #141 Joined: Sat Feb 11 2006, 01:14PM
Location: Southern California
Posts: 96
I like how when it stops you can hear it echo.

Yeah, I thought that was cool too. Kinda gives you an idea of how loud it is, echoing off the neighbors house across the street.

Have you tried running it without a breakout point?

No, I haven't tried. As Dan mentioned, this is specifically advised against in the book. Too bad, I really like the look of an arc randomly floating around the toroid. I actually own one of your mini coils that doesn't use a breakout point and people love the little guy too.
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