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Your cart is empty.PRM LINEAR POTENTIOMETER Dual 100K linear pot powered by reversible 5Vdc gearhead motor Overall dimensions: 25D x 64mm including shaft 6mm knurl slotted shaft is 14mm long 8 PC pins on pot, single row Solder-loop terminals on motor
Chris Crawford
Reviewed in the United States on October 13, 2020
High quality motorized pot. Delivered as promised. However I'm removing one star for lack of information provided here about the part. I saw the word "linear" in the description and expected that the resistance would be linearly proportional to the angular twist of the shaft. (That is, when the shaft is 20% through its rotation, the resistance would be 20% of the 100k). But if you look at the part photo here (which is accurate) you will see a "B-4" on the part. This means a "B-4" resistance curve which is decidedly not flat. It's not logarithmic, but it's also not flat linear. I now know that a "B-1" or "B-2" curve is really the flat linear taper that I want.Search for 'bourns prm 100k b4' to find a data sheet with this curve. I'll add a picture to this review. Look closely for the "B4" curve on the plot. The data sheet will also show which pins do what on the pot.
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