What is true about saturation region?

Which of the following is true for the saturation region of BJT transistor

BJT transistor

The first bipolar junction transistors were invented by Bell Labs' William Shockley, which applied for patent (2,569,347) on June 26, 1948.

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? Explanation: The collector current is directly proportional to the base current in the saturation region of the BJT.

Which is true for MOSFET saturation region?

i is false and ii and iii are true. Solution: Saturation current does not depends on the voltage difference between the source and the drain in the saturation region of a MOSFET. An n-channel MOSFET operating with V_OV=0.5V exhibits a linear resistance = 1 kΩ when V_DS is very small.

What happens in saturation region?

Saturation region

This is the region in which transistor tends to behave as a closed switch. The transistor has the effect of its collector and Emitter being shorted. The collector and Emitter currents are maximum in this mode of operation.

What is the condition for saturated region?

In depletion mode, source and drain are connected by conducting channel but the channel can be closed by applying suitable negative voltage to the gate. The condition for non saturated region is. Vds = Vgs – Vt. Vgs lesser than Vt. Vds lesser than Vgs – Vt.

Which of the following is true for a pnp transistor in saturation region?

D. Explanation: whether the transistor in npn or pnp, for it be in saturation region the eb junction must be forward bias the cb junction must be forward bias.

What are the Different Regions of Operation for a FET? | Intermediate Electronics

Which of the following is true about a pnp transistor?

Which of the following are true for a PNP transistor? Explanation: The 2 – 5% of holes is lost in recombination with electrons in the base region. The majority charge carriers are holes for a PNP transistor. Thus the collector current is slightly less than the emitter current.

Which of the following is true for operation of a pnp transistor?

D. Explanation: whether the transistor in npn or pnp, for it be in active region the eb junction must be reversed bias the cb junction must be forward bias.

Why drain current is constant in saturation region?

The reason why it saturates is that there will be a region of higher resistance of size proportional to the Drain-Source voltage, and therefore the resistance of this region will be proportional to the same voltage. But as current is voltage/resistance, the dependence will cancel out and you'll get "constant" current.

What is the difference between ohmic and saturation regions?

Ohmic or linear is the region where ID is a function of vGS and VDS. Id rises ( very ) roughly linearly with VDS, hence the name 'linear'. Saturation is the region of constant ID, determines by VGS-VT.

What is the condition for saturation region for N channel MOSFET?

Saturation region: When VGS ≥ Vt, and VDS ≥ VGS – Vt, the channel will be in saturation mode, where the current value saturates. There will be little or no effect on MOSFET when VDS is further increased.

What happens when a transistor is saturated?

A transistor goes into saturation when both the base-emitter and base-collector junctions are forward biased, basically. So if the collector voltage drops below the base voltage, and the emitter voltage is below the base voltage, then the transistor is in saturation.

What is meant by saturation voltage?

saturation voltage, collector-emitter (VCE(sat))

The voltage between the collector and emitter terminals under conditions of base current or base-emitter voltage beyond which the collector current remains essentially constant as the base current or voltage is increased.

What is the condition for the state of saturation of a transistor?

Solution : The transistor is in saturation state if `I_bbeta_(a.c.) gt =I_c`. In this condition, during the positive half cycle of a.c. signal, the current `I_b` increases resulting an increasing in `I_c`, which is so large that `V_(CE)` become less than `V_(BE)`.

What is saturation region MOSFET?

Saturation Region

In the saturation or linear region, the transistor will be biased so that the maximum amount of gate voltage is applied to the device which results in the channel resistance R_DS(on being as small as possible with maximum drain current flowing through the MOSFET switch.

Which of the following is true about MOSFET?

Which of the following is true about MOSFET? Explanation: According to the physical structure of MOSFET, there is a Silicon dioxide layer between channel and gate terminal. Since Silicon dioxide acts as a resistor with infinite resistance, there is no connection between the channel and gate terminal of MOSFET.

Which of the following statement is true about a FET?

Which of the following statement is true about FET? Explanation: Because of the Sio2 insulator, doped between drain and source at the top, the resistance offered by this is very high. The insulator will stop the flow of electron from one part to another which acts as an open circuit.

Is linear and saturation region same?

2)linear region-When Vds<Vgs-Vth then Mosfet is said to be in linear region . at this state there is linear relationship between Vds and Drain current . At this state graph between voltage and current show resistive nature. 3)saturation region - when Vds>Vgs-Vth then mosfet is said to be in saturation region .

What is saturation region in BJT?

The second region is called “saturation”. This is where the base current has increased well beyond the point that the emitter-base junction is forward biased. In fact, the base current has increased beyond the point where it can cause the collector current flow to increase.

What is saturation region in JFET?

The Pinch Off Voltage

Operating with the Drain Source voltage above Pinch Off is known as the "Saturation Region" as the JFET is acting like a saturated transistor; that is any increase in voltage does not produce a relative increase in current.

What is saturated drain current?

The Saturation Region of a FET transistor is the region where the drain current, ID, flowing from the drain to the source of the FET transistor, is the highest for the gate-source voltage, VGS, that is supplied.

In which region drain current remains constant?

During pinch-off operating mode, the Drain current does not decrease to zero. Instead, Id current becomes constant, remaining relatively independent of Vds voltage.

How drain current saturates?

The drain current in saturation is derived from the linear region current shown in equation 3.18, which is a parabola with a maximum occurring at V_{D, sat} given by: (3.22) To obtain the drain current in saturation, this V_{D, sat} value can be substituted in the linear region expression, which gives: (3.23)

Which statement is true for transistor?

Solution. The correct statement is (b), (c). For a transistor action, the junction must be lightly doped so that the base region is very thin. Also, the emitter junction must be forward-biased and collector junction should be reverse-biased.

Which of the following statement is true for pnp transistor when used in an amplifier circuit?

If a p-n-p transistor is to be used as an amplifier in common emitter mode, base-emitter must be biased forward. So, base should be connected with the positive terminal of the battery whereas emitter should be connected with the negative terminal of the battery.