Skip to main content

Applications Of Mosfet




The MOSFET is an important element in embedded system design which is used to control the loads as per the need. Many of electronic projects developed using MOSFET transistor such as light intensity control, motor control and max generator applications. The MOSFET is a high voltage controlling device provides some important features for circuit designers in terms of their overall performance.
MOSFET and Its Applications
The MOSFET (Metal Oxide Semiconductor Field Effect Transistor) transistor is a semiconductor device which is widely used for amplifying electronic signals and switching in the electronic devices. The MOSFET is a three terminal device such as gate, source, and drain. The MOSFET transistor is very far the most common transistor and can be used in both analog and digital circuit.

The mosfet transistor works by varying the width of a channel along which charge carriers flow (electron and holes). The charge carriers insert into the channel from the source and exits through the drain. The channel width is controlled by the voltage on an electrode is called gate which is located between the drain and source. It is insulated from the channel near very thin layer of metal oxide. There is a different kind of MOSFET applications which is used as per the requirement.

Types of MOSFET Devices
The MOSFET transistor is divided into two types which is given below :
Depletion mode MOSFET 
When there is zero voltage on the gate terminal, the channel shows its highest conductance. As the voltage on the gate is positive or negative then decreases the channel conductivity.
Enhancement mode MOSFET
When there is no voltage present on the gate terminal the device does not conduct. More voltage applied on the gate terminal, the device has quite good conductivity.
MOSFET Applications
The applications of the mosfet transistor used in various kinds of electrical and electronic projects which are designed by using various electrical and electronic components. For better understanding of this concept, here we have explained a project in which MOSFET is used as a switch.

MOSFET Used as a Switch
In this given circuit, using enhanced mode, the N-channel MOSFET is being used to switch the lamp for ON and OFF purpose. The positive voltage is applied at the gate of the MOSFET  transistor and the lamp is ON (VGS =+v) or at the zero voltage level the device turns off (VGS=0).    If the resistive load of the lamp was to be replaced by an inductive load and connected to the diode or relay to protect the load. In the other circuit, it is a very simple circuit for switching a resistive load such as lamp or LEDs. But when using MOSFET to switch either capacitive load or inductive load protection is required to contain the MOSFET applications. If we are not giving the protection, then the MOSFET transistor will be damaged. For the MOSFET to operate as an analog switching equipment, that requires to be switched between its cutoff region where VGS =0 and saturation region where VGS =+v.





Labels:

Comments

Post a Comment

Popular posts from this blog

Different types of Limit Switches

Rotary Geared Limit Switches The operating of the Limit Switch is to prevent the mechanism or drive at the intense forward/reverse positions. The Limit Switches are significantly suited to use on reversing drives like a hoist, winches, rolling mills and various other mechanisms used in steel plants such as coke ovens, feeding machinery, valve drives etc. The contacts of Limit Switches are forty amps rated ceaselessly at 500 Volts A. C. The Limit switch is often supplied with two NC contacts or four NC contacts or (2 NO + two NC) contacts as per the need. For Series Limit Switches are shields are provided. The frequency of switching of each contact is suitable for a maximum of 720 operations per hour. The speed of the driving shaft rotation shouldn't be over 60 rpm. Features:- High durable standards Optimum performance Easy to install Counter Weight Limit Switches A metal structure offers the required stability to Counter Weight Limit Switches that job on heavy c...
Post a Comment
Read more

What is Solar Panels? How Does a Solar Panel Work?

Solar Panels Photovoltaic (PV) is the term identified with the change of light into power utilizing semiconducting materials that display the photovoltaic impact. A typical use of this technology is solar panels which comprise of solar cells that generate solar power. They can be installed on south-facing roofs, walls or on the ground, and can be fixed or have a solar tracker that follows the sun across the sky. The installation of solar panels is very beneficial for both private and commercial users because the solar power became electricity will be sold to the energy supplier. The feed-in tariff can reduce energy bills and price of solar panel installation. The advantage of this type of energy source is that it is clean energy, so generates no pollution and no greenhouse gas emissions. It is however dependent on direct sunlight so around 10% to 25% is lost when a tracking system is not used. How Does a Solar Panel Work? The solar cells within a solar array produce DC elect...
Post a Comment
Read more

What is MOSFETs: Types & How to MOSFET as a switch

MOSFET stands for metal-oxide-semiconductor-field-effect transistor. It is a special kind of field-effect transistor (FET). The MOSFETs could be a voltage controlled device. The MOSFET has “gate“, “Drain” and “Source” terminals rather than a “base”, “collector”, and “emitter” terminals in a very bipolar transistor. By applying the voltage at the gate, it generates AN electrical field to control the current flow through the channel between drain and supply, and there's no current flow from the gate into the MOSFET. The power MOSFETs are special to handle the high level of powers. The power MOSFETs is widely used in the n-channel enhancement mode, p-channel enhancement mode, and in the nature of n-channel depletion mode. Here we've got explained regarding the N-channel power MOSFET. Basic Statures of Power MOSFET There is three main basic status in the power MOSFETs. ·          On sate resistance ·     ...
Post a Comment
Read more