Koen van Leeuwen <PICLIST@mitvma.mit.edu> wrote:

> I thought PWM had a fixed pulse frequency, but I see thats not needed.

    Oh, I see.  Yes, your method is different from the high-frequency
    PWM method that would be used if you wanted to output, say, 128
    8-bit samples per period. I guess the most straightforward method
    of doing that would require a pulse frequency of 128 * 256 * your
    fundamental frequency.

    I would call both methods "PWM", but perhaps that's not correct
    (or not the standard usage, anyway).

    In any case, the method you proposed has advantages over the
    very-high-frequency method, although you'll have a lot of
    harmonic content if you really plan to do it with only 7 pulses
    per period.

    -Andy

=== Andrew Warren -- aiw@cypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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