Is the below wave is good for an inverter 12v to 230v 50Hz?

[d@nny]

I have made the following wave for my 12vdc to 220v ac inverter
Is this good?

 

[FvM]

PWM frequency is rather low low (about 450 Hz), so the answer depends on which load you intend to connect.

 

[d@nny]

300 watt
it is for 300watt

 

[FvM]

I don't mean the power level, the question is, if the load tolerates the harmonics.

 

[d@nny]

I don't mean the power level, the question is, if the load tolerates the harmonics.

i want to use this with computer for emergency if main power fails.

---------- Post added at 18:58 ---------- Previous post was at 18:56 ----------

i have attached 500nf capacitor on inverter 230volt output . the surges are on switching transistors are filter with diode and 100nf capacitor

 

[FvM]

A switch mode supply can work well even with a square wave inverter. Most computer UPS units are of this type. But your waveform should be fine, too.

 

[d@nny]

A switch mode supply can work well even with a square wave inverter. Most computer UPS units are of this type. But your waveform should be fine, too.

i have attached 100nf capacitor and a diode on collector to emitter for ground the surges.
The output is filter with two 1uf capacitor in series which makes 500nf
dont know my wave forum will output near to sine wave or almost the sine wave as i have tried to make the sine wave

---------- Post added at 20:20 ---------- Previous post was at 19:49 ----------

i have failed
i have just got 85 volt output instead of more than 230v
i think the pic fails to drive tip41c at full power
tip41c driving 3 nec npn transistor on each side to output the 230volts. tip 41c is darlington with these 3 nec at each side
so i think i need another 2 npn transistors to drive tip41c which than drive nec to output the volts
so i will send 5 volt from pic16f676 vdd pin to tip41c base through npn transistor and tip41c is sending 12v to nec base