Sir how about If I wanted to increase the load capacity of the inverter from 12 to 240 volts 3000 to 5000 watts pure sinusoidal wave output does the diagram the same in the above post.
May I know what electronics devices should I change values and formula for the computation of each part if you have.
Everybody agrees that the circuit of the inverter has many errors and is much too simple.
You need to go to school and learn about the basics of electronics to learn what must be changed so the output is 240V instead of 120V (hint, instead of a 120V to 24V center-tapped transformer use a 240V to 24V center-tapped transformer), to learn how to completely redesign the inverter for an enormous load of 5000W and to learn how to design a sinewave inverter.
I WANT TO KNOW THE METHOD USED TO CALCULATE OR TO SIZE A PURE FERRITE TORROID CORE IN COMING UP WITH THE PROPER WINDINGS LEADING TO THE RIGHT WATTAGE FOR PURE SINE WAVE INVERTERS, FOR EXAMPLE I NEED I PURE FERRITE TOROIDAL CORE FOR PROPER POWER RATING OR WATTAGE SAY 3KW 4KW , WHAT CRITERIA DO THEY USE. PLEASE DO HELP OUT.
BTW, Will, The 500W inverter project that I fixed was reported to deliver 720W. So its output transistors must have had an emitter current of almost 15A.Since its driver transistos were connected in a darlinton arrangement, they probably had a collector current that exceeded that of the output transistors, and all currents went into the transformer. I would never push transistors so hard, therefore rated the circuit at only 500W. The link to that schematic is posted again here: http://www.electronics-lab.com/forum/attachments/500Watts_Inverter.gif
would like to build your circuit as to modify a home audio processor to function in my car...
Please post your schematics HERE instead of posing links to the diymobile website that we do not belong to. An audio crossover/processor circuit probably runs on a low DC voltage and does not need the inverter providing it with a high AC voltage.