> Hi,
>
> I need to generate a 1300Hz ish sine wave pulse, from a pic, that
> I can plug
> into a tape recorder's line in jack to log.
>
> Obviously, it's fairly easy to get a 1300 Hz square wave, but
> what can I do
> to simply and easily smooth this out a bit, so it's reasonably close to a
> sine wave?
>
> Any pointers appreciated

        How pure a 1300Hz wave do you need? You could take the 1300Hz square wave
and put it through a band pass filter centered on 1300Hz, that'll give you a
reasonably clean wave. If you need better then try some PWM+filter with the
PIC to get a pretty well perfect sine wave. TTYL

----------------------------------
Herbert's PIC Stuff:
http://repatch.dyndns.org:8383/pic_stuff/

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