all about smps

Discussion in 'The Projects Forum' started by moonlight, Jun 29, 2009.

  1. moonlight

    Thread Starter Member

    Jun 29, 2009
    18
    0
    hi all
    i'm new here and i need your help
    i'm an electonics student
    i'm working on uninterruptable A Switched Mode Power Supply (U-SMPS)
    and i need all the help i can get
    input of 220v ac current
    output of 24 v 10 A
    thanks in advance
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Can you be more specific? Where is your design work getting stuck?
     
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    Welcome to the forum moonlight.
    You just specified a PSU whether it be a SMPS or a transformer of 24V@10A. Input is 220V mains. :D

    Well buddy! to go about helping you, You have to like provide all the information....no!
    So then we can start cracking our heads.
    So how about telling us what you are up to.

    Rifaa
     
  4. moonlight

    Thread Starter Member

    Jun 29, 2009
    18
    0
    ooook
    thank u all for your response
    like i said i'm new in this whole electronic thing!!!!
    its my first year actually
    and one of my teacher chalenged m to make a smps
    and he only gave me the information i gave u
    and i have no idea what i'm gonna do
    but i started searching and i beginning to understand
    please dont laugh at me
    i know u all great and have alot of information
    and i probably will just waste ur time
    but be patient and help me
    thank u
     
  5. onlyvinod56

    Active Member

    Oct 14, 2008
    362
    1
    hello moonlight,
    i think nobody will help u here for your blank mind.....without having any idea.
    u r telling that u r a first year student.
    iam xpecting that u dont have a knowledge of a simple power supply i.e., step dwn transfrmr --- diode rectifier ---- filter capacitor ----- regulator.

    without having an idea of a simple power supply, u r unfit for making an smps.

    so. first learn about the basic power supply and try to build it and go for smps..... identify the difference between a basic supply and smps.

    if u r familiar with the basic power supply, then observe the circuits of various dc-dc converters. there are so many....flyback....buck....boost converters etc...

    if u have a proper guidance, very soon u can build an smps....

    first try in google like 12v power supply....or see the datasheets of 7809, 7812 ...etc for example power supply circuits...
    once u finish this, learn about smps

    all the best
     
  6. moonlight

    Thread Starter Member

    Jun 29, 2009
    18
    0
    thanks alot
    i did make simple power spply
    and i know all about it and some differances between it and the smps
    i just want some guidelines how to start
    my mind isnt that blank i can learn and i'm determined to do it
    still want help!!
    thanks anway
     
  7. Tahmid

    Active Member

    Jul 2, 2008
    344
    25
    Well, SMPS is not an easy field and takes a lot of hard work for you to make a fully functional one. First you may want to start by reading some books, eg:
    Power supply cookbook by Marty Brown
    Demystifying Switching power supplies by Raymond Mack
    Then you can go make the SMPS. You also need to have knowledge of MOSFET/IGBT, PWM controllers, ferrite cores and how to wind them.
    Then have study on the different topologies. For your requirement: 24v 10a = 240w output, half-bridge topology seems the way to go. But you could also use flyback topology using TOP-GX/TOP-HX ICs from Power Int (provided you can wind the transformers properly).
    Good luck and remember that you can accomplish all this if you are determined to work hard in this field.
    Cheers.
    Tahmid.
     
  8. Tahmid

    Active Member

    Jul 2, 2008
    344
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  9. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    Hey Tahmid. How's the weather up their.
    You are from India, right. Never thought I'll meet an Indian around here.
    From your post I See that you are a professional in electronics or is it electrical.
    Just like to get to know the geek minds in this great place.
    DId you know that I studied at NTTF Bangalore' like around 1994.

    Anyways see you around

    Rifaa
     
  10. moonlight

    Thread Starter Member

    Jun 29, 2009
    18
    0
    thanks Tahmid
    u really helped me i'll get started right away
    please bare with my question
    and this is such agreat forum
    ithougt that nobody will help me
     
  11. Tahmid

    Active Member

    Jul 2, 2008
    344
    25
    Hi R!f@@,
    Thanks for the comments.
    I'm from Dhaka, Bangladesh, not India.

    You can study the books that I mentioned. You can also get a lot of free books on the net. But before gaining enough knowledge, do not try to construct an SMPS as it can be lethal. If you make a circuit, make sure that you discharge the capacitors before you put your hand there. Through study and hard work you can attain proficiency in SMPS - I am confident. Man can do what man has done.
     
  12. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    ooooooooooops!! my Bad

    Rifaa
     
  13. bertus

    Administrator

    Apr 5, 2008
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  14. moonlight

    Thread Starter Member

    Jun 29, 2009
    18
    0
    thank u thank u all
    but the book
    Power supply cookbook by Marty Brown
    cant seem to find it
    if anyone have it please post it for me
    thanks in advance
     
  15. Tahmid

    Active Member

    Jul 2, 2008
    344
    25
    Hi moonlight,
    Search Internet, you will find it. Put more effort. If ultimately you fail, contact me. I will provide you.Thanks.
     
  16. moonlight

    Thread Starter Member

    Jun 29, 2009
    18
    0
    ok thank u i will contact u if u dont mind
     
  17. bertus

    Administrator

    Apr 5, 2008
    15,648
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    Last edited: Jul 12, 2009
  18. Tahmid

    Active Member

    Jul 2, 2008
    344
    25
    Ok, if it is not allowed by law, I will not send it.

    Moonlight, since it is not lawful to send you the copyrighted material, I am sorry that I can not send it to you. Hope you can collect it or purchase it by your own means.
     
  19. moonlight

    Thread Starter Member

    Jun 29, 2009
    18
    0
    ok thanks Tahmid for everything
    i will try to find the book
    thanks to u all
     
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