[sdiy] Opamp Function Generator Kit.

[patchell]

Yash wrote:

> I just bought a DIY kit with an OPAMP function generator. I was quite
> pleased as there was also a square wave oscillator kit which was more
> expensive. The one I bought gives me a Square, a Triangle and a Sine, thanks
> to a  LM348N IC (quad OPAMP).
>
> I'm thrilled, especially because after I downloaded some spec sheets about
> the component, I also got some other applications like a state-variable
> filter.
>
> The circuit has the three outputs for sine, square and triangle. I think
> they can be used simultaneously.
>
> I am hoping to augment this circuit with a sawtooth as well as a noise
> generator before I attack the filter part.

    Converting a square and triangle (both required) to a saw is fairly easy.  I
don't know where a circuit to do this might be on the web (I sure one must be
someplace), but I can sketch one up fairly easily if nobody comes up with a
url.  Noise is a seperate issue. Go to the ASM-1 home page...there is a noise
circuit there.

>
>
> I believe I will strive to seek a variable state filter or a multi-mode one
> for the filtering. I would prefer to have a variety of filters to be put in
> series and/or parallel before the amplifer stage.
>
> Can I also just build my filters separately without worrying too much about
> eh connections between my modules?

    Not too sure what you mean there??

>
>
> Any ideas about the baove would be most welcome.
>
> Regards,
>
> Yash.
>
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--
 -Jim
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