What are the basic conditions for working of a transistor as an amplifier?

What are the basic conditions for working of a transistor as an amplifier?

The transistor should be properly biased to use it as an amplifier. The DC bias voltage should be applied to the emitter base junction. This connection makes the transistor remain in the forward biased condition.

What are the conditions of a transistor?

Here the operating conditions of the transistor are zero input base current ( IB ), zero output collector current ( IC ) and maximum collector voltage ( VCE ) which results in a large depletion layer and no current flowing through the device. Therefore the transistor is switched “Fully-OFF”.

What is the condition for the proper transistor action?

What is the condition for the proper transistor action? Both the junctions should be forward biased.

What are the essential conditions needed for biasing a transistor?

Hence, forward biasing of emitter base & reverse biasing of collector-base junctions is an essential possible condition of biasing for a transistor to operate in an active region. Therefore, option C is the correct answer.

Which of the following condition is necessary to operate transistor in an active region?

Active Region: The transistor is said to operate in an active region when the emitter junction is biased in forward direction and the collector junction in the reverse direction. The transistor is used as an amplifier when it is biased in an active region.

What bias conditions must exist for a transistor to operate as an amplifier consider all of the base collector and emitter of a transistor while biasing?

The emitter-base junction must be forward biased, and the collector-base junction must be reverse biased. 2.

Which of the following conditions is true for the BJT transistor to work in cut off region?

Explanation: The base current as well as the collector current are zero in cut-off mode. 2. Which of the following is true for the cut-off region in an npn transistor? Explanation: Both collector and emitter current are zero in cut-off region.

Which of the following is correct about transistor in active region?

Active region is that region in which the emitter base junction is forward biased while the collector base junction is reverse biased. So, the correct answer is “Option B”.

What are the requirements of good biasing circuit?

Emitter base junction must be forward biased and collector base junction must be reverse biased. That means the transistor should be operated in the middle of the active region or Q point should be fixed at the centre of the active region.

What are the basic conditions of biasing the emitter base and collector base junction of a transistor for its proper functioning?

For a proper functioning of the transistor, the emitter-base region must be forward-biased and collector-base region must be reverse-biased. In semiconductor circuits, the source voltage is called as the bias voltage. In order to function, bipolar transistors must have both junctions biased.

Which of the following conditions must be satisfied to operate a PNP transistor in active region?

9. Which of the following is true for a pnp transistor in active region? 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. 10.

How is a transistor set up as an amplifier?

The figure below shows how the transistor is set up when it is connected in a circuit as an amplifier. In the figure given above, the input is connected in forward-biased and the output is connected in reverse-biased. The input signal is applied on the base-emitter junction and the output is taken through the load in emitter-collector junction.

How does a transistor amplify a weak signal?

Overall, the weak signal is thus amplified in the collector circuit. However, to work as an amplifier, the transistor has to work in the active region of the output voltage versus input voltage curve as seen in the figure below.

Why do we use CE configuration for transistors as amplifiers?

We usually employ CE configuration for transistors as amplifiers because it provides large values of current gain, voltage gain and power gain. Moreover, there is a phase-shift of 180 degrees between input and output. It implies the output signal will be an inverted amplified version of the signal given in the input.

What is the phase shift between input and output of transistor?

Moreover, there is a phase-shift of 180 degrees between input and output. It implies the output signal will be an inverted amplified version of the signal given in the input. As we come to the end of the lesson, we have to know and remember that a transistor amplifier in order to function properly must have the following things;