[sdiy] IN your mind, what is .... LM3900

[Magnus Danielson]

From: Scott Gravenhorst <music.maker at gte.net>
Subject: Re: [sdiy] IN your mind, what is .... LM3900
Date: Wed, 04 Feb 2004 12:19:43 -0700
Message-ID: <200402042019.i14KJhd24670 at linux6.lan>

> Dare I bring this back to actual synth-DIY?  

Sure, confuse the hell out of us by bringing in the sexy chick of Synth-DIY!
;O)

> I had asked if anyone could describe what it is that the LM3900 was the
> best choice for in analog synth design.  Paul Perry answered that the Serge
> Wave Multiplier uses it, but other than that, there were no other
> responses.  I'm assuming now that it isn't all that useful for analog synth
> work other than the SWM module (which looks fun and simple).  This is
> probably because it's a current input device, and apparently, there isn't
> much need for a current differencing amplifier in analog synth electronics.
>  My poorly wired cerebrum doesn't seem to pop out anything über-wonderful.

But... didn't the ARP filter module use the LM3900? I seem to recall that...

I'm sure you find the schematic on the web somewhere... I've seen it, but I
don't recall the details very clearly... and I *AM* ashamed for that fact!

Cheers,
Magnus