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4hv.org :: Forums :: Tesla Coils
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increase output of SSTC

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raff
Thu Oct 08 2009, 06:32AM Print
raff Registered Member #2315 Joined: Tue Aug 25 2009, 02:35AM
Location: Leyte, PH
Posts: 161
guys,

with line powered SSTCs run in interrupted mode, is there a computation or trick or guidlines to follow , for MORE thicker/and longer streamers?

from past experiences, this is only what I know:
more capacitance value on the power supply filter caps... question: can a 500uF blow or trip fuses/circuit breakers on intial startup? how high can a capacitor value be?

1> does THICKER primary coil also lead to bigger/longer streamers? Im using awg #12 solid wire

2> does the Ampere rating of the MOSFET also dictate output? like a 14A device has smaller output streamers than MOSFETs with 30A rating?

and lastly, I have done 3T for primary with 120Vdc supply, and works well, though mosfet WILL heat up fast when run in CW or high-rate interrupts(my heatsink 1mm thickness).... though this is subject for experimentation also.. i will later wind a primary with 4 turns but will want a smaller ID for more coupling..will watch out for pri/sec arking though....still looking for a former w/c will be snug fit to my secondary coil OD...

-Ralph
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Steve Conner
Thu Oct 08 2009, 11:27AM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
A bigger topload makes the most difference, IMO. It'll increase power draw and make the sparks bigger. Too big and it'll blow your MOSFETs.

Link2

More capacitors, thicker wire and higher rated FETs will only make a slight difference.
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raff
Thu Oct 08 2009, 11:45AM
raff Registered Member #2315 Joined: Tue Aug 25 2009, 02:35AM
Location: Leyte, PH
Posts: 161
hi Steve,

thanks for the informative bits. ok im off finding a nice topload...I think I *might* have something in here..2 half sphere cups..could posibly be 4" or 5" diameter...


Ralph
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