[sdiy] harmonic generator

[jhaible]

Also check the National Semiconductor data sheet for the LM3900.

JH.

-----Ursprüngliche Nachricht-----
Von: harry <harrybissell at prodigy.net>
An: <np at inverse-entertainment.de>
Cc: Synth DIY <synth-diy at dropmix.xs4all.nl>
Gesendet: Samstag, 23. Februar 2002 19:57
Betreff: Re: [sdiy] harmonic generator


> That technique need not jitter and can be very accurate. It can only
handle
> a fixed frequency.  Back in the 1960's our industrial controls did timing
that
> way.
>
> H^) harry
>
> ps I think JH has a similar circuit on his site, check it out.
>
> Nils Pipenbrinck wrote:
>
> > After reading all that post I remember to have a circuit in a book which
> > does a staircaise from a pulsetrain. It's a german book called
"praktizierte
> > elektronik" by wirsum. Got that one from my father some years ago.
> >
> > It's was a really simple analog circuit where a cap was charged by the
> > raising edge of a square wave. As soon as a thresold was reached the cap
was
> > discharged. That circuit should be able to divide a squarewave by all
whole
> > numbers. It will outputs a staircase wave. No idea how that will sound
since
> > I've never tried the circuit.
> >
> > If anyone is interested I can scan it, but I think the circuit is
inaccurate
> > and jitters around.
> >
> > Bye,
> >         Nils
> >
> > (I whish I would have more time for synth building)
>
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