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Which of the following parameters will be very high in the common base configuration of a bipolar junction transistor?
- a)Current gain
- b)Voltage gain
- c)Output resistance
- d)Input resistance
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Which of the following parameters will be very high in the common base...
Output resistance in common base configuration:
The common base configuration of a bipolar junction transistor is characterized by a low input resistance and a high output resistance. This configuration offers high current gain and unity voltage gain.
Explanation:
- In the common base configuration, the input signal is applied between the emitter and base terminals, while the output signal is taken from the collector and base terminals.
- The output resistance in this configuration is very high due to the fact that the collector current is inversely proportional to the collector-emitter voltage. This means that a small change in the collector-emitter voltage can cause a large change in the collector current.
- As a result, the output resistance is high because the output voltage is not well controlled by the input voltage, leading to a high output resistance.
Significance:
- The high output resistance in the common base configuration makes it suitable for applications where high current gain is required, such as impedance matching and RF amplifiers.
- It allows for efficient amplification of signals with minimal loading effects, making it a preferred choice in certain circuit designs.
In conclusion, the output resistance is very high in the common base configuration of a bipolar junction transistor due to the characteristics of this particular circuit arrangement.
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Which of the following parameters will be very high in the common base...
Common Base Configuration of BJT:
- In the Common base configuration, the base connection is common to both the input signal AND the output signal.
- The input signal is applied between the transistors base and the emitter terminals, while the corresponding output signal is taken from between the base and the collector terminals.
- The base terminal is grounded or can be connected to some fixed reference voltage point.
Characteristics of Common base BJT:
- Input Impedance - Low
- Output Impedance - Very High
- Phase Shift - 0o
- Voltage Gain - High
- Current Gain - Low
- Power Gain - Low
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Which of the following parameters will be very high in the common base configuration of a bipolar junction transistor?a)Current gainb)Voltage gainc)Output resistanced)Input resistanceCorrect answer is option 'C'. Can you explain this answer?
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