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| Q. |
Which of the following statement is incorrect? |
| A. | output of ce amplifier is out of phase with respect to its input |
| B. | cc amplifier is a voltage buffer |
| C. | cb amplifier is a voltage buffer |
| D. | ce amplifier is used as an audio (low frequency) amplifier |
| Answer» C. cb amplifier is a voltage buffer | |
| Explanation: the output of the ce amplifier has a phase shift of 180o with respect to the input. the cc amplifier has av≅1, thus it is a voltage buffer. however, the cb amplifier has a large voltage gain, and its current gain ai≅1, thus it is a current buffer. ce amplifier has an application has an audio amplifier. | |
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