Hello.

Does any of you know a simple method of obtaining small precision
potentiometers using Mosfets?

I think that one can use a BS170 for obtaining resistive values from 0 to 2
ohms, simply connecting the gate to a variable voltage (for example, obtained
from a bigger potentiometer). Is this correct?

If this circuit is battery supplied, how can i minimize the battery
consumption ?


   Thank You.

                                           Paul H. Castro
                                           phcastro@enalta.com.br
                                           Brazil

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