[sdiy] Patchell's Boggling 13700 Expo Converter Thing???

[Jim Patchell]

http://www.e-insite.net/ednmag/archives/1995/011995/graphs/02di1fg1.htm

http://www.e-insite.net/ednmag/archives/1995/011995/02DI1.htm

Well, that schematic is certainly familiar.  That is exactly what I saw 
when I realized that this was a good solution for the gain control element.

eq927 at freenet.carleton.ca wrote:
> Jim, Rene.... I think the article you are referring to is the one by 
> Mike Sims, in the Jan.19, 1995 issue of EDN - it shows one-half of an 
> LM13600 being used as a predistorter for the other half of the 13600.
> Regards, Mike
>