I need a circuit diagram of the newe inverters (not using heavy transformers)
it's for 24 volts d.c. input 230 vollts a.c. modified waveform output.
I hope someone can help me the wattage will be 3kw. thank you Al

 

Hello,

How long do you want to run 3 kilowatts from a 24 Volts battery ?
It takes at least 125 A to create 3 kilowatts (not even counting efficiency losses).

Take a look here for circuit idea's.
http://www.educypedia.be/electronics/powercontrolspwm.htm

Greetings,
Bertus