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Forums
4hv.org :: Forums :: Tesla Coils
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SSTC 5 help

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Alex M
Fri Mar 07 2014, 09:15PM
Alex M Registered Member #3943 Joined: Sun Jun 12 2011, 05:24PM
Location: The Shire, UK
Posts: 552
ZakWolf wrote ...

the right 5ohm resistor popped and smoked

Sounds like a FET has shorted rolleyes
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Sigurthr
Fri Mar 07 2014, 11:26PM
Sigurthr Registered Member #4463 Joined: Wed Apr 18 2012, 08:08AM
Location: MI's Upper Peninsula
Posts: 597
 		Yep sounds like a fet death. You can start the interrupter before or after or with the bridge, doesn't matter when, but turning it off after the bridge ensures bus capacitance is discharged.

How high your frequency is directly correlates to how hard the fets and UCC chips get pushed.

I get best results using a coiled antenna a few inches from the secondary no higher than top primary turn. You don't want HV on the antenna.
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