The post details comprehensively regarding how to build a pure sinewave inverter circuit using microcontroller circuit with PIC16F72
The following image shows the complete circuit diagram of the sinewave inverter, the images are divided into two in order to fit inside the page, please join them together after printing the two images.
The following image shows the built prototype which tested using a 1200 watt load successfully
The close up of the mother board of the proposed sinewave inverter using PIC16F72 can be witnessed in the following image
This picture shows the PCB track layout for the proposed inverter design.
Hex files and PIC code along with PCB designs of this pure sine wave inverter circuit using PIC16F72 can be downloaded from the above shown links,.........Hope this helps!!