[sdiy] Serge Waveshaper

[Ken Stone]

It bears little resemblance to what is actually in Serge's wave MULTIPLIER.
The waveshaper is yet another, older, circuit.

The wave multipler has three sections, parts 2 and 3 being the famous ones.

Part 2 is built very much like my own CGS29 wave multipler, except using six
stages instead of four. No, I didn't copy it, I just arrived at the same
conclusion independently.

Ken


>I'm looking at Patent 4306480 (easily gotten with pat2pdf.org).
>
>Is Fig. 6 the famous "Serge VC Waveshaper" one hears so much about? It's 
>got an op amp, a bipolar, and two diodes. The diodes are connected in the 
>same direction in series; one is grounded, and the other is hooked to the 
>negative terminal of the o amp. The collector of the transistor is hooked 
>to the negative terminal of the op amp, and the base is hooked between the 
>diodes.
>
>I'm having a hard time wrapping my head around exactly what this circuit 
>does.
>
>- Aaron
>
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>
>Dr. Aaron Lanterman, Asst. Prof.       Voice:  404-385-2548
>School of Electrical and Comp. Eng.    Fax:    404-894-8363
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Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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