I have a 3Vpp wave that I would like to amplify to 50-100Vpp. I was using a transformer but after a few tries, i got to think that this was nowhere near being the right way. Can anyone offer some advice?
Why don't you just try using an op-amp? Bias the op-amp according to the specifications on the data sheet. Then just use two resistors to obtain a gain between 50-100Vpp. Try looking up inverting/noninverting op-amp configurations for help.