Question:
When a signal is applied to the input of a transistor it was found that output signal is phase-shifted by 180\(^\circ\). The transistor configuration is
When a signal is applied to the input of a transistor it was found that output signal is phase-shifted by 180\(^\circ\). The transistor configuration is
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In transistor amplifiers, the common emitter configuration provides a 180\(^\circ\) phase shift between input and output.
Updated On: Mar 18, 2026
- CB - configuration
- CE - configuration
- CC - configuration
- Both CB and CC - configuration
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The Correct Option is B
Solution and Explanation
Step 1: In the CE configuration, the output is 180\(^\circ\) out of phase with the input, which is a characteristic feature of the common emitter configuration.
Step 2: In both CB and CC configurations, the phase shift is either zero or a fraction of a degree, not 180\(^\circ\). Hence, the only correct answer is the CE configuration. Thus, the correct answer is option (2), CE - configuration.
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