Help In adpoter 5V 2.5A

[El whash]

I lost my Adpater and at all Egypt there’s No adapter like that

, I know how execute circuts if anyone brief me in circuts of Adpter I will be greatful

the adpater input 220v or 110 it doesn’t matter but the output is 5V 2.5A

thank for everyone intend to help

[dagakshay]

you need a step down transromer for 2.5A….

and refer to link:

http://www.engineersgarage.com/electronic-circuits/variable-power-supply

http://www.engineersgarage.com/electronic-circuits/fixed-voltage-power-supply

 

and atke T0-3 packaging of 7805 what might provide you the higher o/p current at constant voltage

[romel emperado]

7805 is only 1.5A according to datasheet so if you need 2.5A then you may use LM350/LM317 because it is 3A adjustable voltage regulator..

[dagakshay]

yes romel you are correct but there are some of that 7805 avialable which can provide higher current…

using LM317 is also a good option

[romel emperado]

yeah.. agree..

[dagakshay]

i was just thinging about it…. can we use zener to make some constant supply sorces?

[romel emperado]

yes.. that is use commonly in some power supply to limit voltage accross the line.. but i dont know what’s the difference of other regulator.. i think the regulation method is not the same when using zener diode only

[El whash]

I don’t know how to thank you

[Author]

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