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  • Can anyone Design Power Supply for me

    Harshad Italiya

    Member

    Updated: Oct 16, 2024
    Views: 1.0K
    Hi Ceans,

    I Want to Design one Power Supply..
    My Requirement is....
    500 ma Current
    Need 7.5 and 5 Volt DC.

    My Input is 12 Volt AC.

    Can any one Design such for me please.
    0
    Replies
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Replies

  • raj87verma88

    Member • Mar 18, 2009

    Godfather, I hope this is not a part of your project or assignment. And you know the forum rules. Do it yourself, share it here. You will get help whenever you are stuck somewhere. You already know, "No free lunches"
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  • Harshad Italiya

    Member • Mar 18, 2009

    yes Raj i know Rules so here is my problem that

    the power supply right now i am using drops 500 ma current but it heats up whole circuit i want to remove it.

    will post the circuit diagram soon 😉
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  • sauravgoswami

    Member • Mar 18, 2009

    use larger capacity capacitors and check out the datasheets of your components used!!!
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  • just2rock

    Member • Mar 18, 2009

    yah,alongwith check the reverse circuit path.Maximum time this causes heat generation
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  • Harshad Italiya

    Member • Mar 19, 2009

    Well if i use large capacity Capacitor at that time it losses the count value of my ADC.
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  • sauravgoswami

    Member • Mar 19, 2009

    buddy, isolate your power supply from the ADC,use a regulator IC to provide controlled supply,power supply should not be afected from any component unless theres a bad-connection or fault occurence.
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  • reachrkata

    Member • Mar 22, 2009

    Regarding the heating up, I would advise a relook into your design. If you are using Linear design, you would have close to 2.8W of dissipation in the power supply (assuming 250mA each for 7.5V and 5V). Thats too much heat.

    I would advise shifting to a switching design.

    -Karthik
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  • Harshad Italiya

    Member • Mar 24, 2009

    reachrkata
    Regarding the heating up, I would advise a relook into your design. If you are using Linear design, you would have close to 2.8W of dissipation in the power supply (assuming 250mA each for 7.5V and 5V). Thats too much heat.

    I would advise shifting to a switching design.

    -Karthik
    Thanks Karthik will look at that also.
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  • rwyost

    Member • May 13, 2009

    godfather, for help with your design, please email me at #-Link-Snipped-# or visit our website at #-Link-Snipped-#.
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