Sine wave power inverter

[Panzer]

Hi Saugata,
....
I still wonder why anybody is not responding about my querry of transformers. The output of Inverter is serries of pulses at high frequencies with polarity reversal at 50-60 Hz. So is the transformer used designed for
50 Hz operation or high frequency like say 20KHz? There is huge difference
in size of transformers.
regards,
purushottam dayama

Hi psdayama,
As the inverter is working as D class Amp - the end of the MOSFER matrix must be smooth with low-pass filter. Then you will have a nice sine wave only 50 Hz - and the transformer will work nice.
If you are trying to combine the transformer to be puss one over the 20KHz then will become some more complex and for sure the PIC as a 8-bit machine will be not enought.
The usual case is using a schematic of push-pull converter (as 3525) for rising the voltage level to 30% over the output one and then to converted to AC with MOST matrix only.
This way will save you a lot of pain in the ass.
WBR
Panzer