[sdiy] Any LM331 experts around?

[Aaron Lanterman]

On Apr 14, 2008, at 3:57 PM, Mike I wrote:

> Maybe contact Bob Pease at Nat Semi - he designed it.
>
> VCO in Roland Jupiter-4 ( JP-4 ) also a charge-balancing design with  
> uA726
> in front with digital range and waveform selection.

Is this related to the "charge pump" in the Rhodes Chroma VCO? (I was  
thinking that might also make a good student project)

- Aaron