[sdiy] Linear current source homework problem

[mark verbos]

ARP Odyssey VCA.



Aaron Lanterman wrote:
> 
> In class, I covered the use of an op amp and a BJT to creat a linear 
> voltage-to-single-ended current source (or sink). Hal Chamberlin uses 
> one as an example of a linear controlled VCA.
> 
> I want to create a homework problem where the students look at one in a 
> real synth circuit... oddly, I can't seem to find an example of this 
> sort of circuit beyond used (beyond the Chamberlin book). Can anyone 
> think of one? (I looked at Ray's linear VCA circuit, but it doesn't use 
> a BJT in the current source).
> 
> - Aaron
> 
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