SG3524 100v 25a smps

[crackead]

Hi all
i have found this schematic in this forum
(the second one, the bad quality)
it was said that this is a low noise, high eff. adjustable lab smps with adj. current limiting
so i decided to redraw it and mod it
i am quite lazy so i just copied the the values
the transformer primary will be 22 turns CT on etd49 core it will work at 200khz
i was too lazy to add the output filter
(the first, high quality)
the IGBT is IRGPS40B120UP
http://www.google.bg/url?sa=t&rct=j&...6Z6Npw5gD0-LoA

so, is it going to work
if not tell me how to do it

microsim, as i heard you are the master of etd49

 

[crackead]

please
i am in hurry
waiting for your posts

 

[MicrosiM]

Are you looking for 100V @25A SMPS from the 220VAC line?


the schematics are not clear...

 

[crackead]

Yes 220vac
look at the first one
the modded one
also this smps is adjustable 2.5-100v 0.1-25a -the designer said it
it also regulates the negative pole
my question is is it going to work
i will need help with the transformer

 

[MicrosiM]

Yes 220vac
look at the first one
the modded one
also this smps is adjustable 2.5-100v 0.1-25a -the designer said it
it also regulates the negative pole
my question is is it going to work
i will need help with the transformer

Its impossible for me to anticipate if this SMPS will work or not.

I can help you with the transformer design once you plan to start the project.

 

[crackead]

starting now
it will work off 400vdc from PFC

 

[crackead]

a friend of mine told me what are the errors
i fixed them
so
it will work
he tried it with simulator

so
the transformer is working at 400vdc from PFC
the size does'n matter
i could use etd 59
at lower freq.
around 100khz or something

 

[MicrosiM]

starting now
it will work off 400vdc from PFC

PFC?
You have PFC already or you will make one?

 

[crackead]

will make one
i have the schematic

 

[crackead]

the new version

 

[MicrosiM]

I presume that you have the experience to make this project, playing with 340VDC or 400VDC is not a Joke at all !! :x:

Trying to make such SMPS from an unrecognised schematic or circuit is a serious challenge. :x:

I advice you to read this file before you start making this project. :x:

Good luck

 

[jagdeepsingh]

HELLLO I NEED HELP

I'M MAKING A INVERTRE WELDER
TRANSFORMER DATA:
E 71/33/32 N87

FOR 50V OUTPUT

I HAVE 13 PRIMARY TURNS 0.67mm X 20 WIRES

AND 8 SECONDRY TURNS 0.67mm X 58 WIRES

THE PROBLEMS IS :

THE SECONDRY COIL I WANT TO WIND WITH COPPER FOIL NOT WITH COPPER WIRES

SOO HOW CAN I CALCULATE HOW MANY TURNS OF COPPER FOIL I HAVE TO MAKE??? AND DIMENSIONS OF COPPER FOIL ?? PLEASE HELP