Re: amazingly…cheaper for 4 !!

[vintin]

I’m quite sure you can not use the ratio of the primary and secondary coil resistances to figure voltage step up in a transformer/coil.

It is the ratio of the winding count that should be used in the calculation. I believe at this point the winding ratio and count is unknown.

EDIT: Likely the wire gauge is unknown. Even if the gauge of the wire were known we’d still have to know the windings ratio.

I ordered 4 yesterday.