Let us make a linear sinewave inverter witth batterycharger

[mosfet12]

hi all,
In different places or topic we can find lot of discussions regarding particular help in different aspects of sinewave inverter. But for a novice, it is difficult to find step by step discussions regarding making a sine wave inverter. So,i want to start the discussions regarding making one. Let us consider to make a 800va inverter with charging facility for a 200A led acid battery. We can start from the very basic, that is from the transformer required. I hope those are experienced, will provide help to make us understand.

 

[ALERTLINKS]

You can't even decide, which cabinet to use considering the requirements and components in use until you describe details and layout. Similarly is the case for transformer. Is it iron core or ferrite core? What is the operating voltage? A single winding or for push pull, half bridge or full bridge drive? Want to make your own or use a ready made.
Better is to find and follow a practical project and do modifications afterwards, if required.
To get start, you should know your requirements.
What is UPS? Is it
https://www.ups.com/
or is it
https://en.wikipedia.org/wiki/Uninterruptible_power_supply

So how to implement considering your practical experience?