[sdiy] Linear current source homework problem

[Ian Fritz]

Here's one with three of 'em:

http://home.earthlink.net/~ijfritz/sy_cir10.htm

and a single one:

http://home.earthlink.net/~ijfritz/sy_cir11.htm

   Ian



At 12:38 PM 10/5/2006, 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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