4. Refer to the following amplifier assuming β-150 for Q1 an d Q2, and β-50 for Q3. (a) Find the total voltage gain in dB (20 points) (b) Find the total power gain dB (20 points) (c) Find the pow...
2. If the voltage gain of the amplifier is m (50 points) easured to be 50 dB, what is the value of Ru? R8 4.7 Ω C5 R6 R3 4.7kQ c3 R1 Q2 20pF 2N2222A 20pF C1 Q1 2N2222A V1 15V RL R9 1200 R4 V2 5mVpk R2 0° 120Ω R7 1kHz 22ka C4 R5 C2 3300.3 100 F 300 100uF 2. If the voltage gain of the amplifier is m (50 points) easured to be 50 dB, what is...
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2.47 6. In the circuit of Question 5, if the frequency is reduced to the point where Xctbypass) RE, the voltage gain (a) remains the same (b) is less (c) is greater 7. In a common-emitter amplifier with voltage-divider bias, Rimlbase) 68 k2, Ri 33...