Exercise 2.2: Given: VBE = 0.7 V, β = 100 and VCEQ = 7.4 V. Sketch and

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Exercise 2.2: Given: VBE = 0.7 V, β = 100 and VCEQ = 7.4 V. Sketch and label the DC and ac load lines. Calculate the maximum power PL(max) delivered to the load RL and the maximum power efficiency %ηmax. Answer: ICQ = 26.25 mA IC( SAT) = 41.67 mA VCE(CUTOFF) = 20 V ic(sat) = 70.39 mA Vce(cutoff) = 11.8 V PL = 32.27 mW PDC = 525 mW or 591.67 mW η% = 6.15% or 5.45%

Exercise 2.2: Given: VBE = 0.7 V, β = 100 and VCEQ = 7.4 V. Sketch and label the DC and ac load lines. Calculate the maximum power PL(max) delivered to the load RL and the maximum power efficiency %ηmax. Answer: ICQ = 26.25 mA IC( SAT) = 41.67 mA VCE(CUTOFF) = 20 V ic(sat) = 70.39 mA Vce(cutoff) = 11.8 V PL = 32.27 mW PDC = 525 mW or 591.67 mW η% = 6.15% or 5.45%

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Exercise 2.2: Given:

V_{B E} = 0.7 V, β = 100

and

V_{C E Q} = 7.4 V

. Sketch and label the

D C

and ac load lines. Calculate the maximum power

P_{L (max)}

delivered to the load

R_{L}

and the maximum power efficiency

% η_{max}

. Answer:

\begin{array}{l} I_{C Q} = 26.25 m A \\ I_{C (SAT)} = 41.67 m A \\ V_{CE(CUTOFF)} = 20 V \\ i_{c (sat)} = 70.39 m A \\ V_{ce(cutoff)} = 11.8 V \\ P_{L} = 32.27 m W \\ P_{D C} = 525 m W or \\ 591.67 m W \\ η % = 6.15 % or \\ 5.45 % \end{array}

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