To ground and the drain to a 15 V power supply through an ammeter, which Insert a JFET into the protoboard, connect the source Indicate the parts of the characteristics where these functions canĮquipment needed from the stockroom: ECE 392 parts kit, analog universal meter, Sketch basic characteristicsĮxplain why it may be used as a constant current source and a voltage controlled JFET, described in part 1 of the Laboratory (below). PRELABĭraw a circuit for measurements of characteristics of a depletion mode, n-channel Lab 1: Field Effect Transistor The J-FET OBJECTIVESįamiliarity with basic characteristics and parameters of the J-FET.Īpplications of J-FET as a current source and a variable resistor.