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Common Emitter & Common Collector Transistor Configuration, Analog Electronics- 2 Video Lecture | Crash Course for IIT JAM Physics
FAQs on Common Emitter & Common Collector Transistor Configuration, Analog Electronics- 2 Video Lecture - Crash Course for IIT JAM Physics
| 1. What is the purpose of a common emitter transistor configuration? |  |
Ans. The common emitter transistor configuration is widely used in amplifier circuits because it provides high voltage gain and medium current gain. It is commonly used in audio amplifiers and radio frequency amplifiers.
| 2. What is the difference between a common emitter and a common collector transistor configuration? | |
Ans. In a common emitter configuration, the input is applied to the base terminal, and the output is taken from the collector terminal. This configuration provides voltage gain and inverts the input signal. On the other hand, in a common collector configuration, the input is applied to the base terminal, and the output is taken from the emitter terminal. This configuration provides current gain and does not invert the input signal.
| 3. How does a common emitter transistor amplifier work? | |
Ans. In a common emitter transistor amplifier, the input signal is applied to the base-emitter junction, and the output is taken from the collector-emitter junction. The input signal modulates the current flowing through the base-emitter junction, which in turn controls the current flowing through the collector-emitter junction. This modulation of current results in amplification of the input signal.
| 4. What are the advantages of using a common collector transistor configuration? | |
Ans. The common collector transistor configuration, also known as the emitter follower, has several advantages. It provides a high input impedance, which allows it to interface easily with low impedance sources. It also has a low output impedance, which allows it to drive low impedance loads. Additionally, it provides unity voltage gain, meaning the output voltage follows the input voltage closely.
| 5. How can I calculate the voltage gain of a common emitter transistor amplifier? | |
Ans. The voltage gain of a common emitter transistor amplifier can be calculated as the ratio of the output voltage to the input voltage. It can be determined using the formula: Voltage Gain = - (Rc / Re), where Rc is the collector resistor and Re is the emitter resistor. The negative sign indicates that the output voltage is inverted compared to the input voltage.
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Dec 22, 2024 Last updated |
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