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Forums
4hv.org :: Forums :: Tesla Coils
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120V Slayer.

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Chris Cristini
Mon Oct 17 2016, 12:54AM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
This thing works pretty good I just need to work out some issues and make a nice case for it all. It is just a simple Slayer but I am using a simple 555 interrupter switching a SSR that seems to work the best of course the SSR latches but works again after reset. What do you guys think of this one?

Link2

Very high energy discharge in to a screwdriver I wish I had a non touch screen camera. Link2
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circuitbird
Mon Oct 17 2016, 03:42AM
circuitbird Registered Member #58458 Joined: Fri Feb 19 2016, 11:21PM
Location:
Posts: 2
Awesome! What kind of transistor setup are you using? Are you using a snubber device to protect the transistor?
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kimbomba
Mon Oct 17 2016, 04:45AM
kimbomba Registered Member #3854 Joined: Fri Apr 29 2011, 03:45AM
Location: Mexico
Posts: 95
Very nice! Do you have a schematic?
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Patric
Mon Oct 17 2016, 03:01PM
Patric Registered Member #2899 Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 254
Yes please, schematic!
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Chris Cristini
Tue Oct 18 2016, 04:00PM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
Sorry for making you guys wait I'll have to make a schematic but it is literally a simple slayer the only cap I use is for the SSR it helps keep it from latching and I use a 280W computer PSU to power the boost converter. Soon I will get you more details but back to work.

I have found that FETs are cooking allot I think half bridge is what this coil needs.
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Chris Cristini
Fri Nov 04 2016, 12:53AM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
Here is take 2 on the 120V slayer it works well now.
Two new Videos. Link2
Link2

CJC Slayer
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alan sailer
Sun Nov 06 2016, 08:40PM
alan sailer Registered Member #59110 Joined: Mon Apr 11 2016, 04:35PM
Location: Camarillo, California
Posts: 74
Chris,

I'm guessing it's not too critical but what are the values of the fixed and variable bias resistors on the gate of the MOSFETs?

Also do you have any idea what kind of duty cycle (on/off ratio) is OK for this circuit. i know that it may be dependent on the heat-sinking of the devices but any info you might have could be useful.

Cheers.

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Chris Cristini
Mon Nov 07 2016, 11:54PM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
Well I actually forgot the values in the schematic the POT is 10K and the fixed resister is 1-10K which you will have to find what works best and the on off cycle is dependent on what the boost converter and PSU can supply in my example the heatsink is way over kill and could handle CW mode for a long time. Also my secondary is 680 turns of 29GA on a 3" ID PVC.

I even started using a tablet with a function generator here. Link2
Video Link2
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alan sailer
Thu Nov 10 2016, 12:08AM
alan sailer Registered Member #59110 Joined: Mon Apr 11 2016, 04:35PM
Location: Camarillo, California
Posts: 74
Chris,

Thanks much.

It is great to have some ballpark values when starting a project like this.

Cheers.
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