Dear all , I am tryiing to draw I versus VDS for transistor MOSFET 2N7000 , I have made the labview program to draw three curves or more by varying VGS , which is the signiture of the transistor , the proeblem that i am getting only the first curve well , but the others are not drawn well . My circuit out side is included in the attached file . could you please check my VI ? what is the problem ? I apprecaiate ur help ..