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Step down transformer Answered

Hi I would like to build my own power supply. i am a noob at electronics but hopefully this project will improve my skills...
http://electronics-lab.com/projects/power/001/index.html This is what I want to build
The problem I am not sure on is the 1st initial step of the step down transformer. I have only found a 24 volts 4.16 amps with 100va. I want to keep the project as exact as possible and was currious whether if the current rating is higher than 3 amps for that particular circuit I want to build can it blow any of the circuitry. The transformer I found was 24 volts 100 va and has an output current of 4.16 amps. Is that a problem or will it only draw as much current as needed?




 

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The Skinnerz

8 years ago

As long as the output and input voltages are are correct, the supply should only draw the current it needs, so a higher rated transformer is fine, and will allow you to draw more current if needed.

Seeing as there is current limiting, there shouldn't be any problems, although you probably won't be able to use the additional current capacity of the transformer.