[PIC] pwm based sinewave using pic16f877a

[maaz mobin]

hello every one
I am producing sine wave from pic 16f877a by pwm.. i have done almost every thing but i am facing an error or noise.. i am doing programming in assembly by matlab....
This noise donot remain on one place,,it keep shifting its place

 

[PA3040]

if you are using Proteus 7 please post code and ISIS file

 

[maaz mobin]

sorry i am using proteus 8 but is it could be problem of simulator??

 

[andre_luis]

Open the Oscilloscope time scale in order to identify if such noise occurs at a fixed cycle.



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