[sdiy] DETERMINING FLOATING RESISTOR RANGE OF OTA??

[lanterma at ece.gatech.edu]

On Dec 1, 2010, at 9:05 AM, dan snazelle wrote:

> Looking at the FLOATING RESISTOR in the lm13700/lm13600 datasheet, I am trying to figure out how one gets the right values when building this to specifiy a range of resistance
> 
> i am building a circuit which requires a variable resistance over the range of 1k-3k

A while back I think some of my students tried that; it didn't seem to work terribly well but I can't recall the whys or hows. I think they dropped it in favor of using a vactrol.

- Aaron