Hello! I would like to connect a 220 V TV (37cm) to 12V via a voltage converter 12V DC current —-> 220 V AC current (is there in the electronics specialist store for about 40 €) Question: Is this possible, is the 220V AC voltage really exactly like the one from the grid ? sine curve? I have to buy the very expensive electricity at the campsites only because of the TV (In the T4 California with second battery) Thanks for the answers !