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The main characteristics of a Darlington amplifier are
- a)high input impedance, low output impedance and high current gain.
- b)low input impedance, low output impedance and low current gain.
- c)high input impedance, high output impedance and high current gain.
- d)low input impedance, low output impedance and high current gain.
Correct answer is option 'A'. Can you explain this answer?
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The main characteristics of a Darlington amplifier area)high input imp...
The correct answer is option 'A': high input impedance, low output impedance, and high current gain. Let's break down each characteristic and explain why this is the correct answer:
1. High input impedance: The input impedance of an amplifier refers to how well it can accept an input signal without drawing current from the source. A high input impedance means that the amplifier draws very little current from the source, which is desirable because it minimizes the loading effect on the source and allows for better signal transfer. In a Darlington amplifier, the input impedance is high due to the configuration of two transistors connected in a specific way.
2. Low output impedance: The output impedance of an amplifier refers to how well it can drive a load without being affected by changes in the load impedance. A low output impedance means that the amplifier can deliver a relatively constant voltage or current regardless of the load impedance. This is important because it ensures that the amplifier can provide a stable and consistent output signal. In a Darlington amplifier, the output impedance is low due to the presence of a current buffer stage.
3. High current gain: The current gain of an amplifier refers to the ratio of output current to input current. A high current gain means that the amplifier can provide a larger output current for a given input current. This is important because it allows the amplifier to deliver more power to the load and drive larger loads. In a Darlington amplifier, the current gain is high due to the cascaded connection of two transistors, which amplifies the current twice.
The combination of high input impedance, low output impedance, and high current gain makes the Darlington amplifier suitable for applications where signal amplification with minimal loading effect and good power delivery capability are required. It is commonly used in audio amplifiers, power drivers, and other applications that require high current amplification.
In summary, the correct answer (option 'A') accurately describes the main characteristics of a Darlington amplifier: high input impedance, low output impedance, and high current gain.
1. High input impedance: The input impedance of an amplifier refers to how well it can accept an input signal without drawing current from the source. A high input impedance means that the amplifier draws very little current from the source, which is desirable because it minimizes the loading effect on the source and allows for better signal transfer. In a Darlington amplifier, the input impedance is high due to the configuration of two transistors connected in a specific way.
2. Low output impedance: The output impedance of an amplifier refers to how well it can drive a load without being affected by changes in the load impedance. A low output impedance means that the amplifier can deliver a relatively constant voltage or current regardless of the load impedance. This is important because it ensures that the amplifier can provide a stable and consistent output signal. In a Darlington amplifier, the output impedance is low due to the presence of a current buffer stage.
3. High current gain: The current gain of an amplifier refers to the ratio of output current to input current. A high current gain means that the amplifier can provide a larger output current for a given input current. This is important because it allows the amplifier to deliver more power to the load and drive larger loads. In a Darlington amplifier, the current gain is high due to the cascaded connection of two transistors, which amplifies the current twice.
The combination of high input impedance, low output impedance, and high current gain makes the Darlington amplifier suitable for applications where signal amplification with minimal loading effect and good power delivery capability are required. It is commonly used in audio amplifiers, power drivers, and other applications that require high current amplification.
In summary, the correct answer (option 'A') accurately describes the main characteristics of a Darlington amplifier: high input impedance, low output impedance, and high current gain.
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The main characteristics of a Darlington amplifier area)high input impedance, low output impedance and high current gain.b)low input impedance, low output impedance and low current gain.c)high input impedance, high output impedance and high current gain.d)low input impedance, low output impedance and high current gain.Correct answer is option 'A'. Can you explain this answer?
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The main characteristics of a Darlington amplifier area)high input impedance, low output impedance and high current gain.b)low input impedance, low output impedance and low current gain.c)high input impedance, high output impedance and high current gain.d)low input impedance, low output impedance and high current gain.Correct answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about The main characteristics of a Darlington amplifier area)high input impedance, low output impedance and high current gain.b)low input impedance, low output impedance and low current gain.c)high input impedance, high output impedance and high current gain.d)low input impedance, low output impedance and high current gain.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The main characteristics of a Darlington amplifier area)high input impedance, low output impedance and high current gain.b)low input impedance, low output impedance and low current gain.c)high input impedance, high output impedance and high current gain.d)low input impedance, low output impedance and high current gain.Correct answer is option 'A'. Can you explain this answer?.
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