I need to make a high voltage (2-6 kV), high frequency (20-50 kHz) power supply in order to generate cold plasma (in Ar gas). I use a fly back circuit (found in web) could allow me to to that. The high frequency will be generate by the self oscillating fly back transformer.
I made a transformer myself, with 3000 turns on the secondary and (4+4) on the primary and everything works. Input is 12V and I could get ~ 5 kV output at 10-30 kHz. But there is a problem that the oscillating frequency only depends on the feritte core and the number of turns in the flyback transformer (e.g.: 4+4 or 5+5), therefore it is difficult to control.
I have few questions:
(1) Can I achieve my goal with an IC use to generate the high frequency pulse and feed it to my transformer? That way, I can control the oscillating frequency well.
(2) I found a circuit online use IC555, but it is for car ignition. Will it work in my case? If not, what I need to change in the circuit?
Many thanks for any advice/suggestion!