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A: A silicon bar basically can pass current but if a voltage of the right potential is applied it constrict the flow. basically that is it.
Further Explanation:
A MOSFET (metal oxide semiconductor field effect transistor) is composed of three doped regions - two N type and one P type or vice versa.
When a voltage is applied to the gate (the single P type in NPN, or N type in PNP), this causes a path to be created in the gate material. If the gate material is P type, a positive voltage will cause electrons to concentrate near the gate terminal. This concentration of electrons acts as a wire between the two N type materials. As more voltage is applied, the voltage gradient across the P type material will increase (to a point), resulting in a larger virtual "wire" of electrons. A PNP type transistor operates in a similar fashion.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoControls a (potentially large) current flow with an applied voltage (essentially no current flow). Very high switching rates are possible.
Wiki User
∙ 12y agoA MOSFET is a voltage controlled device which controls the flow of current with an applied voltage at its gate terminal.
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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 is a mosfet amplifier?
what is a mosfet amplifier
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 are the advantages of mosfet?
mosfet base power inverter of advantages and disaadvantages
What is normally-On MOSFET?
Depletion mode MOSFET is normally on device --vlsijp
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.
What are the Advantage of mosfet over fet?
MOSFET has high input impedance and offer input signal isolation from the circuit
Which is used for high speed application bjt igbt mosfet triac?
supposed to be MOSFET. but i also depends on your working freq.
What transistor is used in VLSI?
MOSFET
