I have a toroid transformer where the input is 230 VAC and it has 2 output each one rated at 40 VAC. Can I feed the 40VAC part with 230VAC and get >1 Kvolt output?
Most high frequency toroids are wound on ferrite cores, but low frequency (50, 60Kz) toroids usually use tape wound cores. Effectively the same laminate structure as an E-I transformer, but made from a long strip of iron rolled up like a roll of tape.. . .
Increasing the frequency will increase the eddy current heating in the core, but most toroidal transformers have ferrite cores, so the heating at high frequency wouldn’t be as much as with a laminated core.
. . .
you could, but like people have said it's not recommended... the insulation on the 40V winding might not be able to handle 230V, and the insulation on the primary side, although made to withstand surges and spikes of 1kV or higher, is not likely to last very long with such a high voltage continuously.Can I feed the 40VAC part with 230VAC and get >1 Kvolt output?