Working Principle of MOSFET P Channel N Channel MOSFET

MOSFET stands for Metal Oxide Semiconductor Field Effect Transistor. The mosfet is a capacitor operated transistor device. The capacitor plays an essential role for operating a MOSFET. We also call the device as Insulated Gate Field Effect Transistor (IGFET) or Metal Insulator Field Effect Transistor (MIFET). Why we call so we will understand when we … Read more

MOSFET Characteristics

MOSFETs are tri-terminal, unipolar, voltage-controlled, high input impedance devices which form an integral part of vast variety of electronic circuits. These devices can be classified into two types viz., depletion-type and enhancement-type, depending on whether they possess a channel in their default state or no, respectively. Further, each of them can be either p-channel or … Read more

MOSFET as a Switch

MOSFETs exhibit three regions of operation viz., Cut-off, Linear or Ohmic and Saturation. Among these, when MOSFETs are to be used as amplifiers, they are required to be operated in their ohmic region wherein the current through the device increases with an increase in the applied voltage. On the other hand, when the MOSFETs are … Read more

Applications of MOSFET

Switch A direct consequence of MOSFET working leads to their usage as a switch. A n-channel MOSFET shown by Figure 1 can act as a switching circuit when it operates in cut-off and saturation regions. This is because the MOSFET in the figure will be ON when the VGS voltage is positive, which causes the … Read more


Power MOSFET is a type of MOSFET which is specially meant to handle high levels of power. These exhibit high switching speed and can work much better in comparison with other normal MOSFETs in the case of low voltage levels. However its operating principle is similar to that of any other general MOSFET. Power MOSFETs … Read more

MOSFET Circuits

MOSFET which has become the most commonly used three terminal devices brings revolution in the world of electronic circuits. Without MOSFET, the design of integrated circuits seems impossible nowadays. These are quite small and their process of manufacturing is very simple. The implementation of both analog and digital circuits integrated circuits is successfully done because … Read more