[sdiy] WP LM3900 VCF

[Johannes Öberg]

I've tried getting my head around the datasheet for some time, but with no
luck... When you say master class, is that as in "fore thou art truly a
master when thou understandeth ye 4780" ?

On 1/13/06, Steve Ridley <spr at spridley.freeserve.co.uk> wrote:
>
> The LM3900 is a strange device, very different to ordinary opamps.  You
> could download
> aplication note AN-72.pdf from the National Semiconductor site if you want
> to learn a bit
> more, but if you're used to conventional opamps, they turn your brain
> upside down at first.
> Also, search out old Serge and PAiA (especially PAiA 4700 series)
> schematics.  The 4780
> sequencer is an LM3900 master class...
> Steve
>
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