Which configuration is best for amplification in transistor?

The Common Emitter configuration is the best and most widely used configuration for amplifier because of the following reasons: It is the only configuration that gives both voltage and current gain greater than unity.

Which configuration is best suitable for amplification?

⦁ CE is most widely used because it provides the voltage gain required for most of the day to day applications of preamp and power amps. This is not possible in CB mode.

Which transistor is best for audio amplifier?

4 Answers. You could successfully build a audio amp from many different types of BJTs. It will be the circuit, not the transistor, that makes the amp work well. I’d pick jellybean parts like the 2N4401 (NPN) and 2N4403 (PNP) and stick with them for everything except for the final power output transistors.

Which configuration of transistor is the output impedance the highest?

Output impedance or source impedance will be higher for the common base arrangement. So, the correct answer is “Option C”.

Why transistor is called current amplification device?

Transistor Amplifier A transistor acts as an amplifier by raising the strength of a weak signal. The DC bias voltage applied to the emitter base junction, makes it remain in forward biased condition. Thus a small input voltage results in a large output voltage, which shows that the transistor works as an amplifier.

What type of transistor is used for amplifiers?

In most of the electronic circuits, we use commonly NPN transistor configuration which is known as NPN transistor amplifier circuit. Let us consider a voltage divider biasing circuit which is commonly known as a single stage transistor amplifier circuit.

How do I choose the right transistor?

In choosing a suitable switching transistor:

1. The transistor’s maximum collector current must be greater than the load current.
2. The transistor’s maximum current gain must be at least 5 times the load current divided by the maximum output current from the IC.

What is the type of amplifier configuration?

Three amplifier configurations are the common-emitter, the common-base, and the common-collector. The common-emitter (CE) configuration has the emitter as the common terminal, or ground, to an ac signal. CE amplifiers exhibit high voltage gain and high current gain.

How do transistors work as amplifiers?

A transistor acts as an amplifier by raising the strength of a weak signal. The DC bias voltage applied to the emitter base junction, makes it remain in forward biased condition. Thus a small input voltage results in a large output voltage, which shows that the transistor works as an amplifier.

Why transistors are used in amplifiers?

What are the different configurations of transistors with respect to gain?

The behavior of these three different configurations of transistors with respect to gain is given below. Common Base (CB) Configuration: no current gain but voltage gain. Common Collector (CC) Configuration: current gain but no voltage gain. Common Emitter (CE) Configuration: current gain and voltage gain.

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.

Why do we need a transistor as an amplifier?

The need for transistor as an amplifier arises when we want to increase or amplify the input signal. A transistor can take in a very small weak signal through the base junction and release the amplified signal through the collector.

What is current amplification factor in common collector configuration?

The ratio of change in emitter current to the change in base current is known as Current Amplification factor in common collector configuration. It is denoted by γ. The current gain in CC configuration is same as in CE configuration. The voltage gain in CC configuration is always less than 1.