thank for sharing! I have a pulse transformer with parameter: ***N1 [4-5] 0.15 / 160T, N2 [6-10] /0.35/11T,N3 [1-2] 0.15 / 14T cross*** It has 2 secondary winding, how can I use it in this circuit?
@@thanhcong9278 compare this with my calculations. if the primary value is close enough, the secondary winding affects the output voltage and current. I suggest you wind it yourself if you want to learn
Oh yes, damn it, you are right, this is the charger side, this won't make any problem for many devices but a cellphone and similar devices won't charge. thank you very much. big like
If we make our second winding 6 turns, 5 volts output voltage multiplied by 6, we have a reflected voltage of 30v, and shouldn't this value be between 90 or 100? A reflected voltage of 30v futilely increases the power of the snabber circuit. Can anyone help ?
Do you mean the snubber would not tolerate the reflected voltage? I think the reflected voltage is at least 80V. I should check the snubber circuit, but before that, I am sure it is not lower than 80V or something like that
85V-260VAC to 5VDC-2.5A Flyback Switching Power Supply
How did you calculate transformer primary and secondary truns
thank for sharing!
I have a pulse transformer with parameter: ***N1 [4-5] 0.15 / 160T, N2 [6-10] /0.35/11T,N3 [1-2] 0.15 / 14T cross***
It has 2 secondary winding, how can I use it in this circuit?
how much is the inductance of the primary in your transformer?
how much is the inductance of the primary in your transformer?
@@MyVanitar Sir,
inductance as: Lp = (4-5) 2.50mH / ± 5%
and it is PC40 Core
@@thanhcong9278 compare this with my calculations. if the primary value is close enough, the secondary winding affects the output voltage and current. I suggest you wind it yourself if you want to learn
@@MyVanitar Yes. Thank you for your help!
Isn't there a small mistake? At the USB C Port shouldn't those be 10k Pull Up resistors to VBUS?
Do you mean CC1 and CC2 should be pulled up with 10K resistors?
@@MyVanitar yes exactly
Oh yes, damn it, you are right, this is the charger side, this won't make any problem for many devices but a cellphone and similar devices won't charge. thank you very much. big like
files are updated now, schematic, Gerber and BOM
The PCB layout is cute ❤
Thanks
If we make our second winding 6 turns, 5 volts output voltage multiplied by 6, we have a reflected voltage of 30v, and shouldn't this value be between 90 or 100? A reflected voltage of 30v futilely increases the power of the snabber circuit. Can anyone help ?
Do you mean the snubber would not tolerate the reflected voltage? I think the reflected voltage is at least 80V. I should check the snubber circuit, but before that, I am sure it is not lower than 80V or something like that
Excellent job.
Thank you very much!
Transformer looks so safe no lightning can break insulation between primary and secondary.
Yes, I designed it in a way to dampen any criticism :-). I will upload the article in the next 1-2 days.
thumbs up
Thanks
karet doroste hesam jan
Thank you bro