How does the JFET operated as voltage controlled resistor discuss?
How does the JFET operated as voltage controlled resistor discuss? For a junction field-effect transistor (JFET) under certain operating conditions, the resistance of the drain-source channel is a function of the gate-source voltage alone and the JFET will behave as an almost pure ohmic resistor. Thus the device functions as a voltage- controlled resistor. Why is FET called voltage controlled resistor? It is due to the fact that in this region drain-to-source resistance RDS can be controlled by varying the bias voltage VGS. In such applications the FET is also referred to as a voltage-variable resistor or volatile dependent resistor....