# how do I change a Ultra High voltage AC currents frequency?

I am currently making a theoretical tabletop particle accelerator. and i need the materials in the accelorator to be resonating together at a set frequency (Whcih I can change to test speicific theories) The key is High voltage. --- The secondary requirement is AC current --- The third is the frequency

I can step up household AC via a transformer up to 300KV AC Since transformers are tuned typically at a set frequency I cant change the frequency before I step up the voltage , I have to do it afterwards NOTE: the frequency needs to be changeable so that the different ferromagnetic/parametric and diamagnetic materials i am using have their own fundamental harmonic frequencies and what i am attempting to do is match 2 different materials fundamental frequencies be picking a higher frequency that resonates with both materials used.

Ok with that all explained - How do I change a Ultra High Voltage AC's frequency ...

Other materials lets say one is 15hz and the other is 20hz would resonate both at AC frequency 60hz...

Im testing a lot of materials . One of the most common frequency for a few materials is 85-90 Hz . Some higher frequencies are 300-340hz, lowest would be 10hz

• How much power/current do you need to deliver to your sample? Commented Dec 4, 2016 at 1:25
• I am interested to see the answer to this question. However I'm nearly certain that you are wrong, and it will be easier to generate a different frequency in a low voltage regime, and step it up with a different transformer for different frequencies, or with some kind of adjustable tuning circuit to make a single transformer useful over a wider frequency range. Commented Dec 4, 2016 at 1:26
• I need the current/ampere/power to be low so that it doesn't heat up - In fact the current isn't the important factor and the higher it is the more heating, and eddys will occur. Commented Dec 4, 2016 at 1:29
• Actually good point. Yes I wonder if their are transformers that can handle 10-350 hz changes... otherwise having a number of transformers designed - like you siad - have the input wall low voltage modified, first, into the frequency required - then have the appropriate transformer connect to said power and step it up... My dilemma here is I first need to test certain frequencies to see which frequencies harmonise with the materials. Theoretically i know the frequency of the materials when 100% pure but to actually get those pure materials is like buying gold... kind costly. Commented Dec 4, 2016 at 1:34
• WHY do you think you "cant change the frequency before I step up the voltage"? In fact, that is the NORMAL way of doing this. Old CRT television and computer monitors all used "flyback transformers" to generate high-frequency high-voltage (typically around 15-20KHz. Note that all Tesla coils, etc. are high-frequency. It is completely impractical to do this down at utility power mains frequencies (50-60Hz). The basic assumptions of your question seem incorrect and unsupportable. Commented Dec 4, 2016 at 2:05