reducing frequency

Ok I have 3000 volts with a frequency of 31000 kilohertz.
What I need is to reduce the frequeny for standerd household use.The voltage is not a problem,that I can figure out. But I can't find anything about the frequeny.Im just an out of work builder,not an engeneer,so any real answerss,please use words anyone can understand.I can read schematics to a point and I have a set that calls for a mains-frequency oscillator hooked into the main line with a high voltage semiconductor? Whatever semiconductor means.I figure theres more than one way to do this and I found mistakes in the begining of the schematics so I don't know if this is the best way to get the job done.I'm in MN.55025 area.I like someone local to work with if possible. Thank You, Marc Walton

You have 3kV at 31MHz? That sounds like a radio transmitter!

What is the power being handled? Or the current?

i think u have to use cyclo converter ,it is a device which is used for increasing or decreasing the frequency as required in our work.

Sorry-forgot
It's AC. I used an on line induction calulater and some math I found in a book to end up with the 31000 figure.Anyway when I fired it up it worked and is working so I must have got things right.I've been stuck looking and asking for answers for almost a year. Thanks for the reply

I dont understand.
Do you have a gadget that makes 3kV with a frequency of 31MHz?
You say that you have made a calculation of the frequency from a inductor calculator.
but you say that the thing works?
How do you know that it works?
Why do you want to transform a high freq high voltage to what 127V AC?
Is it so that you need to transform 3kV high voltage from a power supplier to 127V AC. 31MHz freq is not used in power distribution because there would be losses and extremly costly.

I know it works because I can measure the voltage on an analoge voltage tester.It's a set of 6 coils being energised by a separate coil.Each coil produces 500 volts.I'ev fryed two of menards best multimeters testing this thing.I'ev been working on it for three years and I'ev only have three things left to figure out.One person mentioned a cycloconverter.It looks like a series of diodes.The problem is how many diodes dose it take to bring the frequency down to usable household use?Some where there has to be a way to figure that out.

Thank you
Do you know how to calulate how many diodes it would take bring the frequence down to (what is it-60 hz for household use?)

I have the math wrote down some where but Im not a math guy so I'ed have to figure it out again.It envolves using a frequency,capacitance.inductance chart.You know,two separate points.

You have to use cyclo converter ,it is a device which is used for increasing or decreasing the frequency as required in our work.

You have to use cyclo converter ,it is a device which is used for increasing or decreasing the frequency as required in our work. facetime on pc