[sdiy] simple tri?

[Scott Gravenhorst]

The ASM-1 includes a standard triangle LFO using 2 opamps, configuration is
an integrator and schmitt trigger.  Very simple.  A dual can be built from a
quad opamp package (TL084).  Triangle and square outs at +/- 5v swing.  This
is a tiny thing if you build it compact.

See http://rubidium.dyndns.org/~magnus/synths/friends/stopp/asm1lfo.pdf

I've also done this same configuration with a 4069UB.

"gregory zifcak" <zifcak at hotmail.com> wrote:
>can anyone point me to a very low parts count triangle lfo? it doesn't need 
>to be accurate at all, and even the shape is not crucial, as long as it's 
>vaguely triangular. i'm looking for a cycle of around 5 to 30 seconds. most 
>important factor is size, the smaller the better.
>
>thanks a lot!


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