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Thread: diysmps Project 1

  1. #11

    Wink

    Quote Originally Posted by dineshkom View Post
    i am new user in this site , from india , i found your SMPS project diagram and all , thankful for your grate job where i will get Ferrite Trans former turns details.
    Thanks for the intrest.

    I will post PCB soon also

    Find here the FINAL schematic

    And transformer details also,

    SMPS Running frequency is 70KHZ

    TRANSFORMER ETD49 UNGAP
    N87
    Npri=16x2 turn 0.4x5wire
    Nmain sec =11turn X 4 0.4X6wire

    Winding Order.

    (1/2 Primary) 16 Turns * ALL SECONDARY * 16 Turns (1/2 Primary)

    Isolation:

    2 layers at least mylar tape between PRIMARY AND SECONDARY.

    I will put more info very soon, PLEASE ASK HERE BEFORE YOU MAKE ANY THING, WE CAN HELP





    ***WARNING***
    Please: Dont attempt to build this SMPS without ASKING first, one mistake it may kill you.
    diysmps site, or owner HELD NO responsibility about any mistakes by ANY one who ATTEMPT to make this SMPS without
    Saftey, or protection. SMPS deals with HIGH VOLTAGE. 320VDC,
    And that voltage is lethal.

    *AGAIN* one mistake it will KILL YOU. DEATH IS PERMANENT.

    Also, If you follow the steps you will succeed.

    Attached Images Attached Images
    www.diysmps.com & www.Micro-Audio.com

  2. #12
    Thank u brother, i am very interested this project, i like to build one for experiment, to connect my TDA7294 amp, " i am not a business man" working in Gov. Standard Testing lab, i hope u will help me.

  3. #13
    Quote Originally Posted by dineshkom View Post
    Thank u brother, i am very interested this project, i like to build one for experiment, to connect my TDA7294 amp, " i am not a business man" working in Gov. Standard Testing lab, i hope u will help me.
    I will help you make it


    if you follow the steps.

    Lets start now if you wish.
    www.diysmps.com & www.Micro-Audio.com

  4. #14
    buddy, sorry to bother you, but in the first schematic, how did you work out the resistor value for the transformer snubber?...i understand that P = 0.5 C V^2, where P is the power you want to dissipate (max 2W resistor) and V is the working voltage across the winding (bus voltage)..so where to from here to work out resistor value?..thanks in advance

  5. #15
    Is possible to use EA77-625 Core? how much power could you get?

  6. #16
    Quote Originally Posted by FELIBAR12 View Post
    Is possible to use EA77-625 Core? how much power could you get?
    And ir2153 not IR2153D?

  7. #17
    Quote Originally Posted by FELIBAR12 View Post
    And ir2153 not IR2153D?
    Both models will Work, But I used IR2153D

    Also new transformers arriving soon, Vertical version this time.

    I dont think your core will fit into this application * Unless you* make the whole calculations again.

    Thanks
    www.diysmps.com & www.Micro-Audio.com

  8. #18
    diysmps Member*
    Join Date
    Jun 2010
    Location
    Copenhagen, Denmark
    Posts
    78
    Made any resently ? No, but i know a lot of people at ICE Power :.

  9. #19
    diysmps Member*
    Join Date
    Jun 2010
    Location
    Copenhagen, Denmark
    Posts
    78
    In this 2kW project there are some 4702 and 1003. What value are they 4702 = 47*10^02 or 470*10^2 ?
    Why not use p, n, u, m, E (or R), k, M, G it is normaly easier to understand when bom is missing :.

  10. #20

    Lightbulb

    Quote Originally Posted by Malmir View Post
    In this 2kW project there are some 4702 and 1003. What value are they 4702 = 47*10^02 or 470*10^2 ?
    Why not use p, n, u, m, E (or R), k, M, G it is normaly easier to understand when bom is missing :.

    Who told you that 2KW SMPS schematic was submitted as DIY Project? it was for refrence for all users

    Also, some one with little knowledge into electronics could understand.

    If that 1003 is a resistor then its 100000 Ohms, 4702 its 47000 Ohms
    :rolleyes:


    Hope its clear now!
    www.diysmps.com & www.Micro-Audio.com

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