I'm working off a design to build a +/- 2kV power supply I'm using this as reference, I've simulated it in TINA and wasn't able to find the N Chan MOSFET SPICE model to correctly simulate it, so I used a generic one. http://m.eet.com/media/1134953/15459-figure_1.pdf This the original document, it contains some errors that I seemed to have fixed. http://www.edn.com/design/analog/4329148/High-voltage-amplifier-uses-simplified-circuit Could someone explain how I could ramp up this designed to handle 2kV, I only need about 1mA of current and it needs to be able to jump voltages in about 100μS. It would be great if I could put in a 5V signal and see 1000V, then put in a 10V signal and see 2kV. Thanks!