this topology reminds me of induction heating appliences. the topology is almost the same and these power levels are justified.
Thanks a lot Andy. You opened up a new area of SMPS desings here on DIYAUDIO.
Hi:
I am not using very low ESR caps, but good quality ones from Su'scon or Teapo brands (105º rated) for sustained LF applications I did a capacitor bank outside the smps as an option,I forgot to mention that the supply has also the 2 outputs independent and floating from ground for grounded bridge applications when needed.
I am not using very low ESR caps, but good quality ones from Su'scon or Teapo brands (105º rated) for sustained LF applications I did a capacitor bank outside the smps as an option,I forgot to mention that the supply has also the 2 outputs independent and floating from ground for grounded bridge applications when needed.
ok ... true ... but for exampletoday I powered a smps that i'm working on ... half bridge 1kw bla bla bla.
i taught that the scope went crazy when i measured the output (without the inductors)
EMI is a big problem in smps
hope it is worth the risk
best regards
EDIT:
I'm just not concentrated. Of course you don't need inductors the current wave form is sine
My bad
i taught that the scope went crazy when i measured the output (without the inductors)
EMI is a big problem in smps
hope it is worth the risk
best regards
EDIT:
I'm just not concentrated. Of course you don't need inductors the current wave form is sine
My bad
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As i understood till now:
-regulated smps use inductors at secondary,need feedback, have high ripple swithching (hard switching), need low esr caps
-unregulated resonant ones have fixed freq and dutycicle, no need for inductors at secondary, no need for low esr caps, have better power capability in half stage and slightly lower eficiency if not combined with a pfc
best regards,
-regulated smps use inductors at secondary,need feedback, have high ripple swithching (hard switching), need low esr caps
-unregulated resonant ones have fixed freq and dutycicle, no need for inductors at secondary, no need for low esr caps, have better power capability in half stage and slightly lower eficiency if not combined with a pfc
best regards,
Hello Andy ...
by interleaved you mean 1/2 primary then 1st secondary, then 2nd secondary, then 1/2 primary?
because i have made a trafo (with ETD44) yesterday with homemade litzwire (60 strands of 0.08 CuEm in primary and 30 strands of 0.08 CuEm in secondary) and I was amazed with it's small losses. don't have L meter to measure leackage inductance but i think it is low.
regards,
by interleaved you mean 1/2 primary then 1st secondary, then 2nd secondary, then 1/2 primary?
because i have made a trafo (with ETD44) yesterday with homemade litzwire (60 strands of 0.08 CuEm in primary and 30 strands of 0.08 CuEm in secondary) and I was amazed with it's small losses. don't have L meter to measure leackage inductance but i think it is low.
regards,
Hi Savu:
I dont know, it depends on remaining calculations, you must do a whole calculation set for the transformer based on Power, dead time, voltage, current, core specs and a lot of things more before to get the wire diameter. For sure, you must get the calculations needed over the net very easily. If you dont do that the other way is to apply brute force and trial and error, very time consuming and not optimal at all.
I dont know, it depends on remaining calculations, you must do a whole calculation set for the transformer based on Power, dead time, voltage, current, core specs and a lot of things more before to get the wire diameter. For sure, you must get the calculations needed over the net very easily. If you dont do that the other way is to apply brute force and trial and error, very time consuming and not optimal at all.
Hy Andy...
I am making the design after a schematic that works. the only problem is that nobody spoke of the conductor section. this is my problem. i want to draw 1kw peak out of it. it think the design was LUKA's. need to check that out.
i will do the calculations tonight and redo the winding tomorrow.
thanks a lot Andy
I am making the design after a schematic that works. the only problem is that nobody spoke of the conductor section. this is my problem. i want to draw 1kw peak out of it. it think the design was LUKA's. need to check that out.
i will do the calculations tonight and redo the winding tomorrow.
thanks a lot Andy
You may fool people here, but not me.Hi:
I have just finished to test my 4kw smps design
Thats an EXACT copy of the P**-A*** original design, with SLIGHT modifications!!
You forgot to remove the remarks from the bottom mask!!!
That was a mistake!
Say hi to Arthu***
I am sorry...
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Hi Savu:
No chance, I do this for living, I can answer questions but I cant expose my work completely, sorry. Anyway, the schematic alone does not mean too much, the hardest part for me was the right layout (COPY ALREADY)
81bas.EXACT copy with SLIGHT modifications
Have you some photos of this glorious P***-A*** original design?
the modification he dose is nothing comparable for you. either for me.
I am not planing to engage with you in some fights.
I will post the original file later. dont belive that man. its not his design he purchased it. COMPLETELY .
Its a copy, or its the ORIGINAL POWER SUPPLY OF P*** A***
I can give you part numbers he uses, but I wont do that, he must make some cash from that supply I dont mind, but dont say its his design.
See you later 81bas. and be good with me. I have nothing againest you.
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