1/ I have a generator of frequencies, that goes from 1hz to 100khz, with a voltage of 1.5 volts.
2/ i have a 50 herz, 220 volts to 1200 volts transformer.
3/ i want to get that 1200 volts at 1 herz to 100khz.
A/ How can i produce 1200 volts at the differents levels of hertz that give my generator of
frequencies ?
B/ At the end, i would like to control the level of voltage that are produce by my transformer,
to be able to choice from 10 volts to 1200 volts thanks to a potentiometer.
So that i can test any voltage from 10 to 1200 volts,with any frequency
from 1 herz to 100 kherz.
That will be an extremely difficult machine to build. The 220 to 1200 volt transformer is useless for this, because it won't operate over that range of frequencies. You could simply amplify the 1.5V signal using high voltage MOSFETs. Is your signal a sine wave? What current are you expecting to produce?
First of all, I don't think your transformer is going to help you at all by itself. The resulting voltage is going to be some voltage also at 50Hz. To get that voltage so you can output it at frequencies other than 50Hz you are going to need to build that into a DC split power supply with -1200 and +1200 volt rails. This itself is not a trivial task and a project in and of itself. Once you have done that, then you can start deciding what to do with those voltages if you don't kill yourself first, which I see as a distinct possibility.
And what to do with it? To be able to output any voltage from -1200V to 1200V, in AC, in different frequencies, and also in presumably different waveforms, based on your frequency generator (that is what a "generator of frequencies" is actually called). This is simple voltage amplification. This is what op amps do, and what transistors can be made to do also. The only issue is the high voltage which limits component selection. If only there was a 1200V op amp. There almost is, here it is:
10Mhz too! What a nice component. If only the price was affordable...
If you were content to go from 0 to +1200V or -600 to +600V this would actually do it, obviously at extreme expense. It's not going to work for the full 2400V swing, though. I think you need to build something out of discrete parts. I don't know how but I am betting it involves very high voltage MOSFETs (or perhaps more moderate voltage rated cascoded MOSFETs) like these:
Most probably you need multiple transformers to cover the entire 1Hz-100kHz range. Start with your 50Hz transformer, add an power amplifier to feed it, and check the frequency range usable with that transformer. Then build the other transformers, covering higher and lower frequency ranges.
Switching the secondary (1200V) sides of the transformers is another challenge. Such HV relays will be quite expensive, if available at all. A rotary switch may be the best choice, provided that it will withstand 1200V.
1/ I have a generator of frequencies, that goes from 1hz to 100khz, with a voltage of 1.5 volts.
2/ i have a 50 herz, 220 volts to 1200 volts transformer.
3/ i want to get that 1200 volts at 1 herz to 100khz.
A/ How can i produce 1200 volts at the differents levels of hertz that give my generator of
frequencies ?
B/ At the end, i would like to control the level of voltage that are produce by my transformer,
to be able to choice from 10 volts to 1200 volts thanks to a potentiometer.
So that i can test any voltage from 10 to 1200 volts,with any frequency
from 1 herz to 100 kherz.
Thanks very much by advance to anyone;
Magnetic
Run Far Far Away.
These voltages are deadly! As shown by your question YOU do not have the Knowledge to PLAY with these VOLTAGES.
