Ac converter with 4 mosfets and a flip flop

Okay you can do the circuit upside down, but you should still be tidy, check the load and biasing resistors http://everycircuit.com/circuit/5630057878126592

I think it will take some time to be as tidy as you are. I am new to electronics and i dont know the calculations for the resistors yet. Thanks for the help. I will try to be tidier

Yes tidy circuits take a bit of practice, but in the long term they make it easier to see how the circuit functions, and it's easier to fault find. In the past, I took someone else thought how to set up biasing one of those oscillators, it can be found in the comments at: http://everycircuit.com/circuit/6281745790140416

ı tried that on my breadboard to see if ı could transmit half an amp. 1. I didnt have 1 uf capacitor so ı dismounted 2.2 uf capacitors from an old circuit. 2. I used a 5v regulator for the flip flop and connected 8v battery to mosfets directly.( I dont know if it was a mistake, please let me know if it was wrong.) 3. Mosfets got really hot so ı made a heatsink for them. 4. Instead of leds ı used two diots. 5. I had only 10k and 330ohm resistors so ı used them. 6.Coil turns are around 30. I wasnt very careful about the numbers. I could get 20ma through the air out of 8 v battery. I could light up a led but very inefficient and ı got really tired of looking down on the bread board if anything was burning or not. If there is anything you want me to do please let me know.

Yeah, in real life you need an oscilloscope to see if a circuit like this is working.

how much is it?

You can get an adaptor for a smart phone for 3 or 4 hundred dollars. Look at EBay.