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Altera_Forum
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10 years ago

Deforming of 60Hz sine wave wrt time based on 20KHz SPWM

Hello everyone! I am using altera ep2c5t144c8 mini development board to get the output of 60Hz sine wave with the carrier frequency of 20KHz. I,ve got the results of SPWM but with spikes in ...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Let me focus on this issue. 


if clk edge...
   count := count + 83;
   if reset...
       count := 0;
   else
      if (count < 208335) then 
          count := 0;
...

so count starts as zero and so is always < 208335 and so should be stuck between 83 and zero. Is this really the correct copy of your code? Or am I missing something?

The second issue what do mean by 60Hz and 20KHz carrier? what is your clock speed?