[sdiy] Looking for a certain circuit for generating 3D vectors on an oscilloscope

[Tom Bugs]

Popular Electronics "The Oscilloscope Graphic Artist"::

https://www.muffwiggler.com/forum/viewtopic.php?t=136469


On 04/04/2017 08:49, Ove Ridé wrote:
> I once saw a schematic for a circuit that allowed you to create 3D
> looking vector shapes on an oscilloscope in XY mode. It was described
> in an article from, probably, the '70s. It had controls for level and
> "harmonic" of oscillators labelled A, B, C, D, and some internal
> routing of those. (Really, internal selection of whether to use the
> triangle or square output from each oscillator.) I went as far as
> making a replica of said circuit in Reaktor, which works pretty
> nicely. BUT I have managed to misplace the files of the original
> schematic, as well forget the name of this circuit. Does this ring a
> bell to anyone? I'm currently looking into building the analogue real
> deal.
>

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