In this project we have generate on pin 5 and pin 6 on an arduino uno a variable duty cycle pwm signals and with a low pass filter and an math operation from on an oscilloscope we have obtain a sinus wave.
This method is used at pure sine inverters.
The entire project(including software which can be use for SPWM inverters) on:
[ Ссылка ]
![](https://s2.save4k.ru/pic/q6OraWWX_qg/maxresdefault.jpg)