increase the range of a variable resistor?
Hi people!
I need to replace a 200k potentiometer with a touch-sensitive strip, itself being a type of variable resistor.
Unfortunately I have no choice in the matter: the strip has a resistance between 3k and 20k. Is there some way I can ensure that 200k is the highest resistance available, while leaving 3k as the lowest?
I had wondered if there is such a thing as a voltage-controlled resistor, a sort of inverse-transistor? That way, I could use the touch-strip to control a stronger resistor, perhaps.
Any thoughts?