SMPS Full-Bridge Converter
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SMPS Full-Bridge Converter

 
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Hudson T. Clark
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Posted: Mon Jan 03, 2005 11:39 am    Post subject: SMPS Full-Bridge Converter Reply with quote

I'm looking for a full-bridge converter project. I need a schematic
preferably to build from. A parts list would be nice to. Or maybe a
reference to a site with DIY SMPS. I'm looking to design a 1.3kW power
supply and I need to experiment first. Any articles, references, or books
with ready to build schematics would be wonderful! They don't need to be
1.3kW supplies but it would be nice to just get some experience building any
full-bridge converter.

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John Popelish
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Posted: Mon Jan 03, 2005 12:10 pm    Post subject: Re: SMPS Full-Bridge Converter Reply with quote

Have you looked at the application notes for some of the full bridge
converter control ICs?

http://focus.ti.com/lit/ds/symlink/ucc3895.pdf
http://focus.ti.com/lit/ds/symlink/uc1875.pdf
http://www.linear.com.cn/pdf/372212f.pdf
http://www.intersil.com/data/an/AN9506.pdf
http://www.powerdesigners.com/InfoWeb/design_center/Appnotes_Archive/u154.pdf

http://apec.engr.ucf.edu/publications/conferences/pesc/conf_28_5.pdf

--
John Popelish
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Fred Bloggs
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Posted: Wed Jan 05, 2005 8:05 pm    Post subject: Re: SMPS Full-Bridge Converter Reply with quote

Hudson T. Clark wrote:
Quote:
I'm looking for a full-bridge converter project. I need a schematic
preferably to build from. A parts list would be nice to. Or maybe a
reference to a site with DIY SMPS. I'm looking to design a 1.3kW power
supply and I need to experiment first. Any articles, references, or books
with ready to build schematics would be wonderful! They don't need to be
1.3kW supplies but it would be nice to just get some experience building any
full-bridge converter.

Why limit yourself to a 1.3KW project? Why don't you go for 13KW?

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Hudson T. Clark
Guest





Posted: Mon Jan 10, 2005 1:19 am    Post subject: Re: SMPS Full-Bridge Converter Reply with quote

What size would a full-bridge converter for 13kW be?
Would you happen to know of a website with information on that? Or is there
a fundamental measurement for a per-watt approximation? I have just been
doing calculations from formulas I get out of these books I bought. I'm
going through and studying and this full-bridge rectifier looks like it
could be an interesting POWERFUL project! What are typical ratios for the
transformers? Where do I get these high power transformers? Can I get ones
that operate much higher than 50-60hz?
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Rich Grise
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Posted: Mon Jan 10, 2005 5:15 am    Post subject: Re: SMPS Full-Bridge Converter Reply with quote

Hudson T. Clark wrote

Quote:
What size would a full-bridge converter for 13kW be?

Bigger than a breadbox. ;-) I think he was being sarcastic. 1.3Kw is a
_lot_ of juice to be messing with for your first project.

Good Luck!
Rich
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Ross Herbert
Guest





Posted: Mon Jan 10, 2005 9:45 am    Post subject: Re: SMPS Full-Bridge Converter Reply with quote

"Hudson T. Clark" wrote:

Quote:
What size would a full-bridge converter for 13kW be?
Would you happen to know of a website with information on that? Or is there
a fundamental measurement for a per-watt approximation? I have just been
doing calculations from formulas I get out of these books I bought. I'm
going through and studying and this full-bridge rectifier looks like it
could be an interesting POWERFUL project! What are typical ratios for the
transformers? Where do I get these high power transformers? Can I get ones
that operate much higher than 50-60hz?

While I would hate to dent your enthusiasm for such a project Hudson,
the questions you raise here are indicators that you have absolutely
no experience in the design of high power electronics, let alone any
other area relating to electronics. If it weren't for your apparent
sincerity in these posts I would almost think you were trolling.

While not wishing to sound nosey or impertinent could you please give
a brief resume of your electronics background/experience and
educationional level, just to aid us in assessing your current level
of knowledge and whether such a project may be within your realm. I
can tell you that what you are proposing would be extremely daunting
even for a highly experienced electronics professional with many years
of design experience specifically related to smps design. With
respect, you come across as a complete novice in this area and what
you are trying to do is run before you can walk. You need to first
design simple PSU's and work your way up.

If this offends then I humbly apologise for any hurt.
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Hudson T. Clark
Guest





Posted: Mon Jan 10, 2005 10:35 am    Post subject: Re: SMPS Full-Bridge Converter Reply with quote

I have my A.S. degree in electronics. I have experience with
microcontrollers, and I don't need to build a linear regulator because I
have repaired them before. I'm just in experienced in the area of SMPS which
is why I am so enthusiastic about it. They seem to be really neat. I'm
paticularly interested in reading some notes on making a buck regulator to
REPLACE a step-down transformer/filter/linear regulator supply, like what
regulator/controller to use for what application. I was thinking about
making a simple buck regulator to plug into an AC outlet and use it to power
a PIC, I even designed the coil and filters in spice simulation software for
those power requirements. I just need to find a controller or regulator to
use. I have bought EDN power supply design, and switching power supply
design. They gave me a good understanding of how they work, but I'm just
empty on projects. Yes I am unexperienced at designing SMPS. But anyone with
a fundamental AC and DC theory education can understand this paticular
application, and I do because I have taken the time to start reading about
SMPS.
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chas



Joined: 03 Jan 2006
Posts: 2

Posted: Tue Jan 03, 2006 3:06 pm    Post subject: SMPS Design Reply with quote

Hudson

Don't be discouraged about your smps project. In 1995 a couple of engineers published an article in the Oct 1995 issue of Electronics Now on the construction of a Audio Amp with 1 KW output ; the article includes the SMPS schematic, circuit description, parts lists,PCB and a full description of the magnetics involved and a how to on construction of all transformers and I recommend it for a learning experience. They also have all the parts for the SMPS (FWB) including the PCB. If you send me your email I will be glad to email you the info if I can find it. The total costs of the power supply is about 300 dollars I don't think you will be able to DIY for less.

I design SMPS and I am putting the final touches on an ebook that describes the design of halfbridge, fullbridge and push pull converters for people like yourself and while reading will not guarantee success it provides all the info to enable a experienced DIY to design, construct and test these types of smps.

chas
_________________
seek and you shall find
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chas



Joined: 03 Jan 2006
Posts: 2

Posted: Tue Jan 03, 2006 5:07 pm    Post subject: URL of SMPS info Reply with quote

Hudson T. Clark

The URL of the SMPS is http://www.a-and-t-labs.com

This site has all info you might need; If you have any futher questions contact me by email cdenton_38@verizon.net.do

chas
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