Why is Darlington array not as efficient as MOSFET as a stepper motor controller?
It is due to the saturation voltage of Darlington pairs, which is normally 1 V. With a load of 1A, the device consumes 1 W. Quite a challenge for cooling…
Category: mosfet
Get Here about Mosfet , How Mosfet works. Basic theory of Mosfet.
What are some of the advantages that a bipolar junction transistor has over a MOSFET?
The collector current follows an exponential function of the base-emitter voltage very precisely and over a wide range (can be over ten orders of magnitude), especially if the current is…
What is the switching frequency of a MOSFET to be used for a DC DC buck boost converter?
There is always a tendency to choose a higher frequency to reduce the size of the inductor and capacitor to minimize the size of the converter. However, it does not necessarily…
Why do we use an insulating layer between the gate electrode and the channel region for a MOSFET?
A layer of silicon oxide (SiO 2) typically grows on a silicon substrate and a metal or polysilicon layer is deposited over it. If you observe, this acts as a…
Is MOSFET a bidirectional device or unidirectional device What is a clear explanation about this?
The MOSFET is a symmetrical device in which the source and drain can be interchanged (if the body is not short-circuited to the drain or source). The MOSFET transistor is…
Which one is faster: BJT or MOSFET?
it really depends on the application. with progress made in cmos past 15 years or so. bjt is only used in rf front end, with decreasing application space for bjt…
What is the difference between enhancement and depletion Mosfet?
Difference between enhancement and depletion type mosfet Depletion mode MOSFET is normally turned on at zero gate voltage. Such devices are used as load resistors. MOSFETs with enhancement modes are…
Can the drain and source of a MOSFET be interchangable
Can the drain and source of a MOSFET be interchangeable? In some situations, the source and drain terminals of a FET may be switched. Indeed, when the FET is used…
Can we use opamp as a driver circuit for a MOSFET
Can we use opamp as a driver circuit for a MOSFET? Using an op-amp is possible but may not be the best solution depending on the switching speeds involved. if…
Why is MOSFET Voltage and BJT Current controlled
Why is MOSFET Voltage and BJT Current controlled? In the bjt, the output collector current of the transistor is proportional to the input current entering the base terminal of the…
What is triode region in mosfet
What is triode region in mosfet? it is an operating regime where the drain current is controlled by three terminals instead of two as in the saturation regime. hence the…
For what reason might one ever choose a JFET instead of a MOSFET
For what reason might one ever choose a JFET instead of a MOSFET? According to use and cost. The most important feature of any switching device is a high input…
Why does MOSFET distort the input wave
Why does MOSFET distort the input wave? the first hint that there is a problem is the input signal. If you have a unipolar rc filter, the waveform must be…