[sdiy] LM394 vs. MAT02 vs. ?

[René Schmitz]

Hi Scott and all,

Scott Stites wrote:
> Rene's VCO4069 uses an NPN/PNP pair.  But, maybe was inspired by the ARP design? =0)  In any event, it does deliver an expo response.  

The Minimoog Filter used a similar convertor as well. Sure it has been 
inspired by ARP and Moog. I had my doubts about the octave purity of 
this circuit as well, and I have to say that I was pleasantly surprised, 
especially if you consider the means involved. The question is what you 
compare it against, if you take a 3046, then the much lower Rbe of the 
discreet transistors is a plus for the NPN/PNP circuit, and if you look 
into the MAT02 direction, then surely they are out of competition.
The big question is what you find acceptable, and thats one thing that 
everyone has to decide for oneself.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159