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Method of measuring joystick potentiometer

Date:2018-03-15 11:52:29        Hits:518 
Method of measuring joystick potentiometer, the following is composed of LeSen precision electronic of joystick potentiometer do a simple introduction
Method of measuring joystick potentiometer, the following is composed of LeSen Precision Electronic of joystick potentiometer do a simple introduction
The 2 fixed ends of the potentiometer are A and B, and the middle sliding contact is C
1. Measuring the resistance between A-B should be 100K.
2. By measuring the resistance between A-C and B-C, the sum of the 2 resistance values should be 100K.( Or largely the same.)
3.Any position of rotation adjustment process should meet condition 2
4.Turn the knob counterclockwise to 0, the resistance between B-C is "0", the resistance between A-C is "100K"
5.The measuring points are fixedly connected to B and C, and the knob is gradually adjusted from “0” to the maximum. The change
in resistance between B and C should be proportional to the change in knob position (angle).
6. If it is a special potentiometer (logarithm), the "proportional" relationship in condition 5 should be "logarithm".
7.Traditionally, the above three B points should correspond to the "0" potential of the circuit signal, A corresponds to "maximum" (signa
input), and C is the signal conditioning output. A, B can be reversed, but the adjustment habits are the opposite.
additional information
          Determine your "idioms" first
 If the counterclockwise is decreasing and the clockwise is increasing, then the counterclockwise is set to zero, and two points with A
resistance of 0 are found, and the rest is A.
Turn the knob to any intermediate position, measure the resistance of point A and other 2 points, and the resistance value remains unchanged at 100K, and that point is B.
In fact, it's the Rab=Rac+Rbc relationship to determine C.