asrock70
Full Member level 4
I need make from DC input voltage high voltage for charging capacitor 4uF, max output power 20W and very low usage rate.
And min. tree switchable output voltage 100V, 150V and 200V
I look on DPA425, transformer design for 200V output 4T/32T. I thing this is not problem.
Feedback is over bias and zener diode VR1. My idea for tree voltage level is
Replace zener VR1 with Tl431 and for 200V setting as 22V , for 100V as 11V
It can work or it is nonsense?
And min. tree switchable output voltage 100V, 150V and 200V
I look on DPA425, transformer design for 200V output 4T/32T. I thing this is not problem.
Feedback is over bias and zener diode VR1. My idea for tree voltage level is
Replace zener VR1 with Tl431 and for 200V setting as 22V , for 100V as 11V
It can work or it is nonsense?