Can anyone Design Power Supply for me

@harshad-ukH5ww • Oct 16, 2024

Oct 16, 2024

1.1K

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.

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raj87verma88

@raj87verma88-ZpL2Wn • 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

@harshad-ukH5ww • 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

@sauravgoswami-UAfTlI • Mar 18, 2009

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

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just2rock

@just2rock-DkmPtO • Mar 18, 2009

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

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Harshad Italiya

@harshad-ukH5ww • 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

@sauravgoswami-UAfTlI • 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

@reachrkata-FOcqhH • 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

@harshad-ukH5ww • Mar 24, 2009

reachrkataRegarding 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

@rwyost-7Y1SOe • 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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