Great suggestions, all!
I do have a mocked up Jacob's ladder which I intended to add in the show,
but didn't think of adding the flames into it; will try that too!
These boards several of you pointed to on eBay do look promising indeed,
and am ordering one for a test run.....
eBay lists many providers, and one of them provides an I/O hookup diagram,
and another a few statements as:
1.: Drive arc extinguishing part 12V~16V direct current,
2. The full bridge should also be DC, voltage: 48V arc 3cm, 311V arc 15~20cm
3. Can music, 3.5mm interface, music square wave music.
But looking at the pictures in the offerings, the boards appear to include
a row of what looks like four heat sinked components that I take as being
MOSFETS or IGBTs or some such which would imply on-board rectification (one
diagram actually labels them as "full bridge"), yet the statement #2 above
implies (at least to me) that it wants a high voltage DC input? Would it
be safe for me to assume in translating the pigeon English (I wish my
Chinese were as good(o:) I could feed this board with AC, say, a Variac
until I got what I wanted working?
Also, could any of you guide me as to how I would start to build the
rest.... would I start with 1/4" tubing for a primary (# turns, spacing?),
then a secondary coil (diameter? height? # of turns of what gauge wire?)
and the topload for the prototype perhaps dryer vent? I have looked at
JavaTC quite a while back, but if memory serves me, I need at least one
parameter to start with, which, newbie doesn't have yet (sorry, duh). But
I'm going to learn!
P.S. Aligned with other TCML discussions, I have a couple youngsters
(mid-20's) excited about helping me with these projects, so we can "pay it
forward" and get the new generations involved I hope. They and others are
always welcome in my shop.
Thx again, all!
Dirk
Las Vegas, NV
On Sat, Dec 29, 2018 at 10:58 AM albert via Tesla <tesla@xxxxxxxxxx> wrote:
> Further to these units. They have a built in interuptor which you could
> set to produce notes
>
> of various frequencies on the scale. (using the pre set pot)
> Alternately input sq wave music.
>
> There is a change over switch to select either with an audio i/p jack.
>
> The earth lead from the bottom of the sec coil is threaded a few times
> through that small feedback coil core
>
> and thence to earth. If it doesn't spark the lead is reversed.
>
>
> On 29/12/2018 16:47, jimlux wrote:
> > On 12/29/18 8:05 AM, albert via Tesla wrote:
> >>
> >> Instead of building twelve SSTC's how about these pre built ones?
> >> All you need extra is the primary and
> >>
> >> secondary coils and power supply.
> >>
> >> I doubt if you could build a small SSTC for less than the price of
> >> these.
> >>
> >>
> https://www.ebay.co.uk/itm/12v-SSTC-integrated-drive-board-finished-solid-state-Tesla-coil-of-the-first-TC/183419500594?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
> >>
> >
> >
> > It's hard to know what that unit is, exactly.. is it a 12V in device?
> > or is that the power to the drive electronics, and the actual coil
> > runs off line voltage (or higher). Seems like it would be low power
> > if 12V.
> >
> > And then there's stuff like this:
> >
> https://www.ebay.co.uk/itm/miniSSTC-Integrated-Driver-Board-Integrated-Tesla-Coil-SSTC-Driver-Board/273234291283
> >
> >
> > which at least (from the pictures) looks like it will drive something
> > higher than 12V. Not much other info, but I suspect a google for
> > miniSSTC will turn up the original design. (Dan from Eastern Voltage
> > Research?)
> >
> > and there's bunches of these kind of things:
> >
> https://www.ebay.co.uk/itm/1800W-ZVS-Induction-Heating-Board-Module-Flyback-Driver-Heater-Tesla-Coil-Fan/253812671224
> >
> >
> > but again, not a huge amount of information.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >>
> >> On 29/12/2018 04:32, Dirk Schmidhofer wrote:
> >>> Greetings TCML'ers!
> >>>
> >>> I can't exactly declare myself a long-timer, but have been lurking
> >>> the list
> >>> for several years. I haven't built my first TC yet, but am on the
> >>> verge.
> >>> I was wondering if there might be a reliable design I can sort of mass
> >>> produce for an art project I'm working on. I've been making various
> >>> art
> >>> installation contributions to Burning Man for a dozen years now, and
> >>> I have
> >>> the prototype for what I call the Kosmik Kalliope (Kosmik Dust is my
> >>> Burning Man theme camp, so please pardon the awful spelling abuse).
> >>> The
> >>> Kalliope currently is a flame effect piece; please see the prototype 13
> >>> second video here:
> >>>
> >>> https://www.youtube.com/watch?v=-8sDM2_J9J8&feature=youtu.be
> >>>
> >>> I have a custom microprocessor that receives MIDI and switches the
> >>> solenoid
> >>> valves accordingly, 12 pipes for the 12 notes of the chromatic scale
> >>> (it
> >>> rolls over and plays regardless of the octave a la MOD 12 calc.). I've
> >>> fashioned a custom igniter so I don't need pilot lights.
> >>>
> >>> I am licensed by the Nevada State Fire Marshal to operate flame
> >>> effects as
> >>> well as a pyrotechnics license and I do commercial stuff but my true
> >>> love
> >>> is to take art to Burning Man. (o:
> >>>
> >>> I've been gathering parts for awhile now (NSTs, MMC and Terry Filter
> >>> parts,
> >>> etc.) and I know it is highly recommended to build a SGTC before
> >>> tackling
> >>> the solid state stuff, but I've also finished building several of Eric
> >>> Goodchild's UD2.5 boards I've had laying around for awhile because
> >>> sometimes I don't work linearly (o:
> >>>
> >>> My question: (Sorry for long windedness); I would like to build 12
> >>> relatively small Tesla Coils (or 24), and was thinking they might be
> >>> static
> >>> spark gap units that could be displayed either above or alongside my
> >>> Kosmik
> >>> Kalliope pipes and switch them on and off reliably, like I do the flame
> >>> effects? Not looking for massive streamers (6-12"?), but I would
> >>> like them
> >>> noticed by the audience.
> >>>
> >>> Is there an available design out there that might meet my
> >>> intentions, or is
> >>> this just a crazy idea, whereby the things will strike my stuff and
> >>> blow up
> >>> all my other electronics?? (o: They would of course be on stands
> >>> far away
> >>> from audiences.
> >>>
> >>> I would like to switch them quickly but I'm not interested at this
> >>> time in
> >>> actually doing the MIDI modulation; just turn them on and off, as
> >>> there's
> >>> lots of other music playing already.
> >>>
> >>> I have ten Allanson NSTs (12K 30mA) that are unfortunately GFI and
> >>> potted,
> >>> but perhaps could use them the way a previous TCML contributor used
> >>> them
> >>> with that resistor network he described?
> >>>
> >>> I also have three other NSTs (nonGFI) larger and smaller.
> >>>
> >>> Or perhaps MOT TCs would be the way to go?
> >>>
> >>> Or a simpler solid state design whereby I could power them all off one
> >>> large power supply?
> >>>
> >>> I have a modest machine shop with lathe, 2 hp CNC mill and 3D
> >>> printer so
> >>> I'm not afraid of fabricating.
> >>>
> >>> I've toyed with the thought of designing, but as a first-timer, I
> >>> seem to
> >>> get stumped with a chicken or the egg thing as far as where do I start?
> >>>
> >>> Thanks for all your ideas!
> >>>
> >>> Dirk Schmidhofer
> >>> Las Vegas, NV
> >>> _______________________________________________
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> >>> Tesla@xxxxxxxxxxxxxxxxxx
> >>> https://www.pupman.com/mailman/listinfo/tesla
> >>>
> >> _______________________________________________
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> >
> > _______________________________________________
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