power supply 5V 1A

Discussion in 'The Projects Forum' started by mohamad syafiq, Oct 4, 2014.

  1. mohamad syafiq

    Thread Starter New Member

    Oct 4, 2014
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    hi all, i have project that to design and build power supply of 5V and 1A..ty
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    cool.. have fun
     
  3. mohamad syafiq

    Thread Starter New Member

    Oct 4, 2014
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    can you all help me out?
     
  4. ISB123

    Well-Known Member

    May 21, 2014
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    You need help designing one or you are just announcing the project?
     
  5. #12

    Expert

    Nov 30, 2010
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    The easy way is to buy a wall plug-in rated for 5 volts and 1 amp. Why do you want to design something so easy and cheap to buy?
     
  6. ISB123

    Well-Known Member

    May 21, 2014
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    Here is 34V one with supply for VU.

    Basically you are going to need a transformer,rectifier bridge,voltage regulator,capacitors and resistors.
    [​IMG]
     
  7. LDC3

    Active Member

    Apr 27, 2013
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    Yes we can, but we're not going to do your work for you. So provide us with your ideas and we'll analyze them for faults.
     
  8. absf

    Senior Member

    Dec 29, 2010
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    I think D1 to D4 in the Bridge is connected wrongly...
     
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  9. #12

    Expert

    Nov 30, 2010
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    Ah yes! The positive and negative routes are backwards.

    You can call it, "diodes facing the wrong way" or you can call it, "the DC power lines are connected to the wrong ends of the bridge".
     
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  10. ISB123

    Well-Known Member

    May 21, 2014
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    Yes you are right!:p

    This is how the connections should go to the bridge.
    [​IMG]
     
    absf likes this.
  11. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    I just bought two 5Vdc regulated wall-warts (ex-cell phone chargers) at my local thrift (recycle) store for 50cents each. A cup of coffee hereabouts costs 200cents. Why would I ever build one???
     
  12. LDC3

    Active Member

    Apr 27, 2013
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    Unfortunately, even using both your chargers wouldn't give the current the OP wants. He would probably need 8 of them. :D
     
  13. wayneh

    Expert

    Sep 9, 2010
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    Sure they will, he said he wants a 1A rating, and that's what most of those things are these days.
     
  14. LDC3

    Active Member

    Apr 27, 2013
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    I'm surprised that they offer so much current since the phones don't charge at that rate.
     
  15. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    The ones I bought are rated at 5Vdc 1A. Input can be anything from 100Vac to 250Vac either 50 or 60Hz. Made by Samsung.
     
  16. wayneh

    Expert

    Sep 9, 2010
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    A standard iPhone charger is 1A, and the phone does charge at that rate.
     
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