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Advantages:-
1- mosfet are small compare to bjt's so it fabricated easily and space saving scheme on the ic's
2- mosfet's input impedance are very high so they do not load the circuits. loading effect doesn't arise.
3- operating frequency is very high so may be used at higher frequencies.
4- used in digital circuits for it's reliability.
5- effect of noise is less than bjt. so high signal to noise ratio.
6-mosfets are unipolar devices so reverse saturation current doesn't exist.
7- it consume less D.C power rather than BJT.
Disadvantages:-
handling is not easy-
Mosfet is very sensitive to electrostatic charge so it may be destroy when you touch the pins of a mosfet devices by hand.
trans conductance is low than BJT.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoMosfet is very good to use in power electronics because it is very useful :D
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What is normally-On MOSFET?
Depletion mode MOSFET is normally on device --vlsijp
How do you keep mosfet from overheating i use only mosfet and control it using variable resistor it works but it gets overheated and brokedown.My battery operated scooter is 24v dc 72 amp.thank you.?
Use a mosfet driver instead of a simple resistor. Using a resistor to control the mosfet is a bad idea anyways because you will have terrible control (mosfets are voltage controlled. Take a look at the response curve for your mosfet). If your mosfet is fully on, its ratings may be too low for continuous operation or the power dissipation is too low for the transition between off an on an that is killing your mosfet.
What is subthreshold slope for mosfet?
what is subthreshold swing
What are the differences betweeen e-mosfet and d-mosfet?
An e-mosfet is and "enhancement" mosfet. A d-mosfet is a "depletion" mosfet. These essentially show what mode the mosfet operates in when a voltage is applied to the gate. . An enhancement mode mosfet is normally non-conducting but conducts when the channel is enhanced by applying a voltage to the gate and pulling carriers into the channel. A depletion mode mosfet normally conducts but becomes more and more non-conducting as carriers are depleted or pulled out of the channel by applying a voltage. The polarity of the voltage depends on whether it is an N channel or P channel. P channel uses positively doped silicon while N channel uses negatively doped silicon. N channel fets are used wherever possible because N material conducts better than P material. There are basically two types of fet, the jfet and the mosfet. The jfet uses a single junction to control the channel hence draws some current. Bipolar transistors use two junctions. In the mosfet (Metal Oxide Semiconducting Field Effect Transistor) there is no such junction hence draw so little current for control purposes it can be regarded as zero. The gate is isolated from the channel by a very thin layer of metal oxide (usually chromium dioxide). An enhacement mode mosfet can be turned on by applying a voltage then removing the wire to the gate. The channel will then remain conducting for some time.
What is depletion mosfet?
A depletion mode MOSFET is a FET that is on with no gate bias, and requires a negative bias (with respect to the source) to stop conducting. The channel is normally conductive and with a negative gate bias the channel becomes "depleted" of charge carriers, hence the name depletion mode MOSFET. This is contrary to enhancement type MOSFET's that are non conductive with zero volts gate bias and become conductive when there is a positive bias on their gate.
What are the advantages of mosfet?
mosfet base power inverter of advantages and disaadvantages
What is a mosfet amplifier?
what is a mosfet amplifier
Advantages and disadvantages of depletion MOSFET?
Since the logic operations of depletion MOSFET is the opposite to the enhancement MOSFET, the depletion MOSFET produces positive logic circuits, such as, buffer, AND, and OR. The most significant advantage of the positive logic circuits is that it can produce positive feedback easily so that a single depletion MOSFET can become a memory cell. In contrast, you will need at least two enhancement MOSFET transistor to produce the positive feedback to build a memory cell. The other advantages of depletion MOSFET are that it is free from sub-threshold leakage current and gate-oxide leakage current. Since there is always a potential difference of Vdd between the gate terminal and channel for an enhancement MOSFET to cause the gate-oxide leakage current, the gate oxide leakage current is unavoidable when the transistor shrinks in size and oxide layer becomes thinner. The depletion MOSFET does not have this problem because there is no potential difference between the gate and channel. As a enhancement MOSFET shrinking in size, there is no way to stop the subthreshold leakage current diffused across from source to drain because the drain and source terminals are closer physically. This is not a problem for depletion MOSFET because a pinched channel will stop the diffusion current completely. The depletion MOSFET is the ideal, perfect transistor. The only disadvantage of depletion MOSFET is its inability to produce negative logic operations.
Why mosfet is called mosfet?
MOSFET is an acronym standing for Metal Oxide Semiconductor Field Effect Transistor.
Can depletion mosfet act as enhancement mosfet?
It depends. A depletion MOSFET can be used as an ehancemnet MOSFET when it is operated as an analog amplifier. However, a depletion MOSFET can't replace an enhancement MOSFET when it is operated as a digital switch. When a depletion MOSFET is used as a digital switch, since the junction between source terminal and substrate must be reverse biased, the voltage of the source terminal of an N typde transistor must be tied to Vdd, and it is completely opposite to an enhancement MOSFET. When a depletion MOSFET is used as an analog amplifer, the source terminal and the substrate are both at the same potential, just like an enhancement MOSFET.
What is normally-On MOSFET?
Depletion mode MOSFET is normally on device --vlsijp
What are the advantages oF MOSFET inverter?
cause MOSFET are mainly the comes into category of Semiconductors, main work of inverter is to switch the contacts within microseconds, here i want to give some constructional things so it could go easy to understand the things, 1] MOSFET has a three satates, i]Deplition ii]enhancement iii]pick When the current go through the system the work of 'mft' has start as a implementing the depletion region(increasing the electrons in emitter collector junction) as and as the supply gets interrupted the MOSFET comes into work within our thinking due to high electrons consumption it goes extream fast switch the signal from one state to anther, actually MOSFET needs cery deep explination to understand it. but the main purpose is to stop reverse impulses and quike switching from one state to another.
What are the advantages and disadvantages of MOSFET?
Advantages:- 1- mosfet are small compare to bjt's so it fabricated easily and space saving scheme on the ic's 2- mosfet's input impedance are very high so they do not load the circuits. loading effect doesn't arise. 3- operating frequency is very high so may be used at higher frequencies. 4- used in digital circuits for it's reliability. 5- effect of noise is less than bjt. so high signal to noise ratio. 6-mosfets are unipolar devices so reverse saturation current doesn't exist. 7- it consume less D.C power rather than BJT. Disadvantages:- handling is not easy- Mosfet is very sensitive to electrostatic charge so it may be destroy when you touch the pins of a mosfet devices by hand. trans conductance is low than BJT.
The main factor which differentiate a de mosfet from an e only mosfet is the absence of?
conductiong channels
Is it possible to make the inverter with p-channel MOSFET?
Of course it is possible to make an inverter with a p-MOSFET!
How do you keep mosfet from overheating i use only mosfet and control it using variable resistor it works but it gets overheated and brokedown.My battery operated scooter is 24v dc 72 amp.thank you.?
Use a mosfet driver instead of a simple resistor. Using a resistor to control the mosfet is a bad idea anyways because you will have terrible control (mosfets are voltage controlled. Take a look at the response curve for your mosfet). If your mosfet is fully on, its ratings may be too low for continuous operation or the power dissipation is too low for the transition between off an on an that is killing your mosfet.
Explain MOSFET elaborately?
MOSFET = metal-oxide semiconductor field effect transistor That in itself is quite elaborate.
