+ Post New Thread
Results 1 to 8 of 8
  1. #1
    Junior Member level 1
    Points: 267, Level: 3

    Join Date
    Feb 2012
    Posts
    16
    Helped
    0 / 0
    Points
    267
    Level
    3

    i give up simulating this circuit (flyback converter cicuit)

    hii all
    i did every think to get my desired output (12V) but i couldn't i hv tried changed MOSFET and rectifier diode many times but i still didnt get my output...where is the wrong here???

    Lp37.5u
    Ls75u
    Vin12V
    Vout24V
    F200kHz

    •   AltAdvertisement

        
       

  2. #2
    Advanced Member level 2
    Points: 6,625, Level: 19
    v_c's Avatar
    Join Date
    Oct 2005
    Location
    Chicago, IL, USA
    Posts
    514
    Helped
    121 / 121
    Points
    6,625
    Level
    19
    Blog Entries
    1

    Re: i give up simulating this circuit (flyback converter cicuit)

    Check some of your component values to make sure that you are indeed using the correct values.
    For example, you have C3=0.01F, most spice simulators will interpret this is 0.01 femto, where fempo is , so in your case you might have a capacitor that is Farads. Also your inductor value for L7=1pH, this is Henries. Double check these values.

    v_c



    •   AltAdvertisement

        
       

  3. #3
    Full Member level 3
    Points: 1,529, Level: 8

    Join Date
    Oct 2011
    Location
    lahore
    Posts
    156
    Helped
    23 / 23
    Points
    1,529
    Level
    8

    Re: i give up simulating this circuit (flyback converter cicuit)

    Quote Originally Posted by high voltage View Post
    hii all
    i did every think to get my desired output (12V) but i couldn't i hv tried changed MOSFET and rectifier diode many times but i still didnt get my output...where is the wrong here???

    Lp37.5u
    Ls75u

    Vin12V
    Vout24V
    F200kHz
    hello,
    Plz try to simulate this circuit don't lose heart and make endeavours.i hope it'll help you.Regards



    •   AltAdvertisement

        
       

  4. #4
    Super Moderator
    Points: 256,119, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    44,670
    Helped
    13589 / 13589
    Points
    256,119
    Level
    100

    Re: i give up simulating this circuit (flyback converter cicuit)

    I don't see a polarity marking at the transformer. The waveform suggests forward instead of the intended flyback operation. But you'll see when monitoring the secondary voltage.



  5. #5
    Advanced Member level 4
    Points: 17,009, Level: 31
    kak111's Avatar
    Join Date
    Mar 2011
    Location
    Finland
    Posts
    1,366
    Helped
    942 / 942
    Points
    17,009
    Level
    31
    Blog Entries
    8

    Re: i give up simulating this circuit (flyback converter cicuit)

    Or study and simulate this circuit....

    Flyback Converter
    ---> Hike with wise men , then you will be wise <---



  6. #6
    Newbie level 4
    Points: 803, Level: 6

    Join Date
    Jan 2012
    Posts
    6
    Helped
    0 / 0
    Points
    803
    Level
    6

    Re: i give up simulating this circuit (flyback converter cicuit)

    what's the simulation software you are using ?



  7. #7
    Junior Member level 1
    Points: 267, Level: 3

    Join Date
    Feb 2012
    Posts
    16
    Helped
    0 / 0
    Points
    267
    Level
    3

    Re: i give up simulating this circuit (flyback converter cicuit)

    thnxx alll guys i really appreciate

    thnx ch wazir ya it helped, seeing my desired output for the first is sumthin great..lol..thanx aloot man.. but actually i still ddnt got my waveforms...dont know why??!!!
    iam using multisim dear vamsi57



    •   AltAdvertisement

        
       

  8. #8
    Junior Member level 1
    Points: 267, Level: 3

    Join Date
    Feb 2012
    Posts
    16
    Helped
    0 / 0
    Points
    267
    Level
    3

    Re: i give up simulating this circuit (flyback converter cicuit)

    plz find my attached circuit..



--[[ ]]--