Sine wave power inverter

[mat janssen]

I made for an old friend a chip where he could select one of 16 sinewave frequencies to open a relay in a repeater (for transmitting)
Here is a part of the programm only one frequency (50Hz) is there now.
the rest is not important.
It gives the 50 Hz in 200 parts of pwm.
When putting a lowpass filter after the output. The sinewave is back.
Regards,
Mat