The first time he tries to work on it "live".

I do!

 

Thanks for your concern.
I don't have any experience of high power design. That's why a commercial solution is better for me.
The 4kW power source will be used for charging up a 2000V-3000V huge capacitor used for MRI. So it will work for probably few seconds.

What's wrong with the normal MRI circuitry?

I can't stress this enough, trying to modify high-power devices is a VERY stupid thing to do. Just don't do it.

 

Thanks for your reply.
It is used for MRI. It does like a EMP gun
Yes, I think a inverter is what I need.

I think I can till use amplifiers after inverter to have higher voltage output. Lower the power would be OK?

 

What's wrong with the normal MRI circuitry?

I can't stress this enough, trying to modify high-power devices is a VERY stupid thing to do. Just don't do it.

Our antenna need higher voltage and power to function.
It will be test on horses.

 

I think I can till use amplifiers after inverter to have higher voltage output. Lower the power would be OK?

You're not understanding, an "Amplifier" is used to amplify small signals, like audio. An amplifier does not increase voltage on high-power devices (so to speak).

 

You're not understanding, an "Amplifier" is used to amplify small signals, like audio. An amplifier does not increase voltage on high-power devices (so to speak).

Oh sorry.
I think that should be called voltage multiplier.
Thank you.

 

Considering the high voltage is a very professional job, according the discussion that you don't have enough knowledges to do this, it is quite dangerous things even may caused death, I will treat as a inappropriate thread and close it.

You might find answers to your questions in one of these forums:

http://forum.allaboutcircuits.com/showthread.php?t=54400

Another good forum that shares many of the same membership is http://www.electro-tech-online.com/ .

Good luck.

 

MRI? Magnetic Resonance Imagining?

I strongly second (or ninth, as the case may be) what others have cautioned you about. Working with any supply over a few hundred volts that can deliver more than a few dozens of milliamps is not something that you want to undertake based on asking a few questions in an internet forum. By the time you are talking thousands of volts at thousands of milliamps you have long past into the realm when you need some specialize training in what these voltage are, what they can do, and how to treat them with the proper respect they demand. Just one, subtle point that has been overlooked will have you pushing daisies in less than a heartbeat (since that heartbeat may never come!).