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Old 26th May 2012, 05:10 PM   #1
400kg is offline 400kg  Turkey
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Default 1kw offline smps new

1kw 28khz % 90 eff with shortcut and thermal protect.
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Last edited by 400kg; 26th May 2012 at 05:21 PM.
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Old 27th May 2012, 12:08 PM   #2
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Default corrected errors

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Old 27th May 2012, 02:05 PM   #3
luka is offline luka  Slovenia
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looks good, can't say I can find anything wrong with schematic

you can probably get away with one less primary wire and use one or two more for secondary, where the current is higher
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Old 28th May 2012, 01:37 PM   #4
Krisfr is offline Krisfr  United States
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Hey Luka, do you know of a schematic with the same voltage output and current but with 110 input voltage? Or how this one could be modified to use 110?
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Last edited by Krisfr; 28th May 2012 at 01:41 PM.
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Old 28th May 2012, 03:14 PM   #5
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thanks 400kg,
If possible, try to analyze this circuit, to beginners and those who are wanting to learn your skills and experiences . If you guys olso have time,please do this.
thanks,
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Old 28th May 2012, 03:25 PM   #6
luka is offline luka  Slovenia
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Quote:
Originally Posted by Krisfr View Post
Hey Luka, do you know of a schematic with the same voltage output and current but with 110 input voltage? Or how this one could be modified to use 110?
All you would need to change is make link in the right place to make voltage doubler on input and that's it... just like PC supply have switch, same thing, same place, one position is for 110 other (no link) is for 230
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Old 29th May 2012, 06:05 PM   #7
400kg is offline 400kg  Turkey
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Hi.We have 3c85 material ,etd54 and frequency is 28khz.
Can we estimate how much power max can i get from this design and what should be the primary turn number and lead diameter?Thank you
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Old 29th May 2012, 06:18 PM   #8
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I forgot to say.Duty cycle is 45%
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Old 29th May 2012, 06:31 PM   #9
luka is offline luka  Slovenia
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I think you should give a go with this program

SMPS transformer design tool (ver.4000)
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Old 30th May 2012, 07:36 AM   #10
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Quote:
Originally Posted by luka View Post
I think you should give a go with this program

SMPS transformer design tool (ver.4000)

thanks luka

May be equivalent in 3c85 n87?
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