john120
Banned
Hello everybody can you please help me to solve a problem regarding the on time and off time difference of SPWM generation for DC-AC Converter.
I refered to Tahmid blog:https://tahmidmc.blogspot.com/2013/02/generation-of-sine-wave-without-eccp_16.html,I made a circuit using PIC16F876A I get the signal which are not equal according to their on and off time;I changed and use PIC16F877A as Tahmid proceeded but I get the same signals as the first I had and all those are not perfect they don't look like the ones which are on Tahmid's Blog:https://tahmidmc.blogspot.com/2013/02/generation-of-sine-wave-without-eccp_16.html Fig 3 and Fig4.
See what I have with Oscilloscope in Proteus and even with physical oscilloscope I have the same signals.
I want to control the MOSFET which are powered at 420V I think if I use such signals there will be a short circuit.
Please help.
Thanks.
I refered to Tahmid blog:https://tahmidmc.blogspot.com/2013/02/generation-of-sine-wave-without-eccp_16.html,I made a circuit using PIC16F876A I get the signal which are not equal according to their on and off time;I changed and use PIC16F877A as Tahmid proceeded but I get the same signals as the first I had and all those are not perfect they don't look like the ones which are on Tahmid's Blog:https://tahmidmc.blogspot.com/2013/02/generation-of-sine-wave-without-eccp_16.html Fig 3 and Fig4.
See what I have with Oscilloscope in Proteus and even with physical oscilloscope I have the same signals.
I want to control the MOSFET which are powered at 420V I think if I use such signals there will be a short circuit.
Please help.
Thanks.