It is here at this website. www.mosfetdiagrams.co.uk/varibles
MOSFET has high input impedance and offer input signal isolation from the circuit
It will make more sense if you first study the construction of MOSFET. It has three terminals, Gate (G), Source (S), and Drain (D). G is insulated from the S and D. Between S and D is a variable resistor, whose resistance depends on the voltage applied across G and S. Since SD is basically a resistor, you have power dissipation when a voltage is applied across S and D. Power dissipation = Vds * Ids.
An enhancement MOSFET doesn't conduct current across the drain to source unless a voltage is applied to the gate. When sufficient voltage is applied to the gate of the transistor, currents flows from drain to source. A MOSFET acts as a switch or amplifier in a circuit.
what is a mosfet amplifier
MOSFET is an acronym standing for Metal Oxide Semiconductor Field Effect Transistor.
not yet
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.
MOSFET has high input impedance and offer input signal isolation from the circuit
it can exchange the current is much larger and has Avery low resistance when it is turned on.the mosfet is not removed from the circuit when the supply is on because it flow the high current.
It will make more sense if you first study the construction of MOSFET. It has three terminals, Gate (G), Source (S), and Drain (D). G is insulated from the S and D. Between S and D is a variable resistor, whose resistance depends on the voltage applied across G and S. Since SD is basically a resistor, you have power dissipation when a voltage is applied across S and D. Power dissipation = Vds * Ids.
An enhancement MOSFET doesn't conduct current across the drain to source unless a voltage is applied to the gate. When sufficient voltage is applied to the gate of the transistor, currents flows from drain to source. A MOSFET acts as a switch or amplifier in a circuit.
The SiO2 layer acts as an insulator and also it provides high input impedance to the MOSFET. This insulation is needed so that a circuit with high EMI or loads which generate back emf (motors) can be driven by applying gate current from a common circuit.
when n- channel mosfets are used to construct a circuit these are called nmos(N- channel mosfet).
it depends on the type of the circuit you are analyzing..it could be a voltage divider, emitter follower, be specific on what type of circuit and maybe i can help you aobut this question.
what is a mosfet amplifier
A MOSFET (metal oxide semiconductor field effect transistor) can be used INSTEAD of a BJT (bypolar junction transistor, so transistor is redundant in your question), if the circuit in question is modified to allow it and the MOSFET is chosen appropriately. BJT's will usually have a higher intrinsic gain, but have lower input resistance. Also a BJT in general will work better at higher frequencies than a MOSFET (unless you choose a high frequency MOSFET) due to the capacitive nature of MOSFETs.
Electronic component are those component which are used to make the electronic circuit it may be active or passive . some active components are - Diode ,FET,BJT,MOSFET, and HEMT etc. while passive component are those device which can not process/amplify signal like- resistor capacitor inductor etc.