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The concern is that one transformer might produce a slightly higher voltage (due to tolerance in the voltage ratings). If simply connected in parallel, this could, over time, damage the "weaker" transformer.I've never had anything to do with Tesla coils and I'm assuming that balancing paralleled transformers is so they both supply the same current. Could two primaries achieve the same thing? Ignore if this is a stupid question.
OK, I did not realise it needed a changeable tap.Varnish is probably a bad idea for a tesla coil, since generally you want it electrically conductive for tapping.
Rusting? I have some rolls of old copper tubing that belonged to one of my grandpas I've had it since shortly after he died, when I was 14. I'm now 73, and while it's not "bright" now it isn't oxidized to any real amount. Are you sure it is rally copper tube, or is it copper plated steel? There was a time that some car brake lines were copper plated steel, could you have some of that?Also does anyone know of a way to prevent the copper tubing from rusting? It already has a coat of oxidized copper and just didn't want it o go any further.
I did lots of parallel neons it works good. All the transformers need to be the same voltage, connect only the HV terminals and NOT the ground terminals. Put spark gap on the first transformer then connect 120 volts, next connect 2nd neon in parallel if NO arc swap the 120 volt wires to make both neons be in phase. Make sure all other neons are in phase. I had 7 neons in parallel once it works good 15K 30ma = 15K .210ma.I've never had anything to do with Tesla coils and I'm assuming that balancing paralleled transformers is so they both supply the same current. Could two primaries achieve the same thing? Ignore if this is a stupid question.