[sdiy] CMOS Saw to Triangle Waveshaper (corrected URL)

[harry]

Thought we might add the sawtooth equasion...

Saw wave = F  +  (1/2  2F)  +  (1/3  3F)  +  (1/4  4F)....

I use these to synthesize test sources for spice simulation.  You can
do a VERY realistic guitar waveform by just making the harmonics
a little (maybe 1-2 Hz) sharp.  I find that just the first three harmonics
makes an acceptable guitar wave for testing

(uhhh... octavers and P/V circuits...   ;^)

H^) harry

Scott Gravenhorst wrote:

> I sit corrected.  I don't remember where I picked
> that up.  Good to know you guys are watching...
> Gotta watch *me* like a hawk.  I'll fix the text.
> I wrote a VB program that has a bunch of sliders
> for harmonics' levels.  It graphs the resulting
> wave from the sliders as the coefficients of the
> sine terms.  I'll have to plug your numbers in.
> That way, I'll remember it.
>
> harry <harrybissell at prodigy.net> wrote:
> >Hi Scott:
> >
> >Nice circuit by one small error... Triangle wayes do not have even harmonics
> >they have only odd, like square waves.
> >
> >Sq wave = F +  (1/3  3F)  +  (1/5 5F)...
> >Tri wave = F +  (1/6  3F)  +  (1/10  5F)....
> >
> >Same harmonics but they fall at twice the rate.
> >
> >I got fooled by the dead link as well...
> >
> >I'll have to try it... looks nice  (I'll go expo version...)
>
> René's original circuit shows an expo input.
>
> >H^) harry
> >
> >Scott Gravenhorst wrote:
> >
> >> Ah Krap!  That's a link to the local copy here.
> >>
> >> http://home1.gte.net/res0658s/TekLab_FatMan_WebSite/VCO_pwm_tri_suboctave.html
> >>
> >> is the internet link.
> >>
> >> Sorry for the confusion.
> >>
> >> KA4HJH <ka4hjh at gte.net> wrote:
> >> >Scott:
> >> >
> >> >Is this link correct? I get a "no such server error" and that doesn't look
> >> >like a normal domain name to me.
> >> >
> >> >>http://linux6/RemoteWebsites/gte/TekLab_FatMan_WebSite/VCO_pwm_tri_suboctave.html
> >> >--
> >> >
> >> >Terry Bowman, KA4HJH
> >> >"The Mac Doctor"
> >> >
> >>
> >> =========================================================
> >> - Government: The other religion.
> >> - The media's credibility should always be questioned.
> >> - Lambs who lie down with lions are lunch.
> >>
> >> -- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
> >> -- Linux Rex         | RedWebMail by RedStarWare
> >> -- FatMan: home1.GTE.NET/res0658s/TekLab_FatMan_WebSite/index.html
> >
> >--
> >Jihad Terrorism Conspiracy New World Order
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> >go ahead and READ my e-mail I have nothing to
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> >
> >
>
> =========================================================
> - Government: The other religion.
> - The media's credibility should always be questioned.
> - Lambs who lie down with lions are lunch.
>
> -- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
> -- Linux Rex         | RedWebMail by RedStarWare
> -- FatMan: home1.GTE.NET/res0658s/TekLab_FatMan_WebSite/index.html

--
Jihad Terrorism Conspiracy New World Order
Revolution Black Helicopters Freedom of
Speech First Amendment Rights: Carnivore Bait
go ahead and READ my e-mail I have nothing to
hide... how about YOU ???