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Does the spark gap in a Tesla Coil need to be before or after the capacitors?
I'm building a Tesla Coil for a science project and I was looking at wiring diagrams and I keep seeing ones with the spark gap before the caps and other ones with it after the caps. Does it matter? I'm using a neon sign transformer and planing to get it at 9000V and 30ma.
It depends on whether the capacitor is in series with the primary coil, or in parallel with it.
If the cap is in series with the primary, then the spark gap must be across the output of the neon transformer, 'before' the capacitor.
If the cap is in parallel with the primary, the spark gap should go in between the cap and the primary to interrupt the tank circuit. This method is preferrable if you have a current limited transformer (as is the neon transformer).
If you had a non-current-limited transformer the first method is preferrable.
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