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In the given circuit using a silicon BJT, what is the value of saturation collector current?(a) 10 mA(b) 8.77 mA(c) 6.67 mA(d) 5 mAI got this question during an online interview.Query is from BJT DC biasing in section BJT Biasing of Analog Circuits |
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Answer» CORRECT answer is (c) 6.67 mA The best explanation: To obtain an APPROXIMATE answer, under saturation the BJT is ON and hence acts as a short CIRCUIT. However, ideally a drop exists for the transistor which is a fixed value. For an EXACT answer, if the BJT is a Silicon transistor, then drop VCE = 0.2V and current is 20-0.2/2.2=9.9 mA. |
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