i need to build some sine wave inverters

i thought to build one because once its get burn or not working i could exactly repair without buying a new one. I thought to build with arduino since its easy to code.
 
If you buy a good quality one that is big enough and don't abuse and overload it it won't burn out.

Does what you are wanting to run really need a sine wave inverter to power it?
 
Fans, why not just get 12V fans?

As mentioned, just go a buy a properly rated UPS or AC generator if the power is wonky Sri Lanka.
 
i thought to build one because once its get burn or not working i could exactly repair without buying a new one. I thought to build with arduino since its easy to code.

If all you needed to do was to generate a sinewave shaped voltage to look at on a scope, it would be an easy task with the arduino. But if you want to actually deliver power at a high voltage, you have a much bigger job in front of you.

As for preferring to build rather than to buy, a professionally engineered product is less likely to fail. But even then, should be equally repairable.
 
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