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50Hz PWM Inverter using pic18F452

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umersohail381

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Hi,


I am trying to build a 50Hz pwm inverter using PIC18F452, I have generated spwm by using loops to control Ton & Toff. but its frequency of siusoid(achieved after filtering spwm) is 41Hz due to delay created by code.
How can I generate exactly 50Hz frequency using CCP module of PIC18F452?
U can refer me some book.




Rgards

Umer
 

shatruddha

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I think you are going on with an infinite loop and there you are doing your updates and corrections, If so, then I would suggest you to use interrupts to get an exact timing.
 

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