The distance between the two outer electrode Main (potential) apart as the electrode section in AB (current) parent 2 is the center of the AB and the MN. by AB must be greater than 5 times the MN.
The distance between the second electrode Major (potential) between the electrode in the distance AB (current), the two main center of AB and equal distance apart MN by AB must be greater than five times the MN.
The distance between the electrode outside 2. Main (potential) away from each other as the stage AB electrode (current), both 2 is the center of the main AB located เท่ากับระยะ MN by. AB must be greater 5 times of MN.