1. shahpoor71

    Thread Starter New Member

    Oct 2, 2014
    3
    0
    Hi
    Please help me if you can
    I need a three-circuit DC / DC Converter
    1. The boost converter with the following specifications:
    One of the following IC circuit: TL 494 or SG3525 OR SG3524 or MC34063 or UC3843 OR UC3842
    VI=5
    VO=15
    FS(MOS)=30KHZ
    IO=2A OR 3A

    2. The bUCK converter with the following specifications:
    One of the following IC circuit: TL 494 or SG3525 OR SG3524 or MC34063 or UC3843 OR UC3842
    VI=15
    VO=5
    FS(MOS)=30KHZ
    IO=2A OR 3A

    3. The (BUCK/boost) converter with the following specifications:
    One of the following IC circuit: TL 494 or SG3525 OR SG3524 or MC34063 or UC3843 OR UC3842
    FS(MOS)=30KHZ
    IO=2A OR 3A
    The input voltage to the desired output
    ///////////////////////////////////////////////////
    If the circuit is protected against overload and short circuit as well

    And if possible adjustable

    Thank you very much wait for your answer
     
  2. ian field

    Distinguished Member

    Oct 27, 2012
    4,415
    784
    Most of the devices you mention are well supported by online appnotes, the MC34063 has some online component calculators that make designing a breeze.

    Buck/boost can be a bit tricky, there's various names like Cuk and Sepic you can google for types of designs - if you want to keep it simple; you could just feed a buck with a boost.
     
  3. wmodavis

    Well-Known Member

    Oct 23, 2010
    737
    150
    If all your HELP headers indicate a real emergency you should call 911!
     
  4. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    The reason this guy needs help is because he cant write a title for his forum posting that says anything about what he needs help with...
     
    wmodavis likes this.
  5. shahpoor71

    Thread Starter New Member

    Oct 2, 2014
    3
    0
    My friends, my English is not so good
    So all the talk and taunt you just do not know
    Just wanted to say I need help I am not josh
    Thank
     
  6. atferrari

    AAC Fanatic!

    Jan 6, 2004
    2,648
    764
    Sorry. What is josh?
     
  7. shahpoor71

    Thread Starter New Member

    Oct 2, 2014
    3
    0
    Hi
    my friend / I know I'm not good in English
    But I think this sentence is in itself nothing else but throw taunts
    I am an Iranian / Persian culture we are ridiculed and taunted dropping very very ugly to others
     
  8. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
    2,812
    834
    Ok. I'll ask after promising that I am NOT taunting. Your English is better than my Iranian. But, I do not know what you mean by "josh". Is there another word you could use to help me understand?
     
  9. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,365
    There are over 751,543 messages on AAC. There is a simple reason why "HELP" is not a good title.
    It would be rather stupid if many messages called for "HELP".
    So think about it. "HELP" does not help anyone trying to sort through messages.
    Next time please be more considerate.
     
  10. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    I think you are too sensitive if you think that I posted my comment to taunt. You should know that my mother tongue is not English...
     
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