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 andsecondary 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.l2649It'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/273234291283which 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/253812671224but 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 massproduce 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 havethe prototype for what I call the Kosmik Kalliope (Kosmik Dust is myBurning Man theme camp, so please pardon the awful spelling abuse). TheKalliope currently is a flame effect piece; please see the prototype 13 second video here: https://www.youtube.com/watch?v=-8sDM2_J9J8&feature=youtu.beI have a custom microprocessor that receives MIDI and switches the solenoid valves accordingly, 12 pipes for the 12 notes of the chromatic scale (itrolls 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 loveis 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 tacklingthe 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 12relatively small Tesla Coils (or 24), and was thinking they might be static spark gap units that could be displayed either above or alongside my KosmikKalliope pipes and switch them on and off reliably, like I do the flameeffects? Not looking for massive streamers (6-12"?), but I would like themnoticed 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 awayfrom 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'slots 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 themwith 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 soI'm not afraid of fabricating.I've toyed with the thought of designing, but as a first-timer, I seem toget 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 _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla
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