I have 18V DC and I need 200V DC @ 50mA (which shares a common ground with the 18V).
My choices are:
1) Push pull
2) Flyback - single winding
3) Flyback - auto-wound
4) Flyback - isolated winding
5) LLC
6) inductor-fed push-pull
7) Cockcroft-Walton multiplier (which is a non-starter).
#1 would be my first choice, but the output inductor is 20mH, so lots of turns of very fine wire, which will be a pain to make, and will probably have a lot of self-capacitance.
Which one would you suggest? or any other ideas?
(18V comes from a 25W plug-top power supply, 600mA goes to the heaters of three 6Н1П valves in series, and the 200V is for the anode supply)
My choices are:
1) Push pull
2) Flyback - single winding
3) Flyback - auto-wound
4) Flyback - isolated winding
5) LLC
6) inductor-fed push-pull
7) Cockcroft-Walton multiplier (which is a non-starter).
#1 would be my first choice, but the output inductor is 20mH, so lots of turns of very fine wire, which will be a pain to make, and will probably have a lot of self-capacitance.
Which one would you suggest? or any other ideas?
(18V comes from a 25W plug-top power supply, 600mA goes to the heaters of three 6Н1П valves in series, and the 200V is for the anode supply)