Consider common emitter amplifier circuit below. Use Vcc=10V and transistor with -100 and VA 100V. R=...

 

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Consider common emitter amplifier circuit below. Use Vcc=10V and transistor with ß-100 and VA 100V. R₂= 30 kn, R₁ = 70 k, R₁: 2 kQ, Rc 4 k2, Rsig 5 kn, R₁. = 5 kn. Vcc Ra www Rin 00 www www R₁ R₂ www Rc RE 60 RL - 1. Find the bias collector current. Calculate the values of small signal parameters gm, In and ro. 2. Sketch an equivalent circuit of the amplifier for AC signals using hybrid- small-signal model of BJT. 3. Find the value of the overall amplifier input resistance. 4. Find the value of short circuit current gain (replace R₁ with short to ground in equivalent circuit). 5. Find the value of the mid-band voltage gain from signal to the load. 6. Find the maximum allowed amplitude of AC output voltage that would keep transistor in forward active mode (i.e. no clipping). Augment the equivalent circuit with transistor internal capacitances C₁ = 1pF and C₁ = 0.1pF. 7. Find the unity-gain bandwidth of the BJT. 8. Find the 3dB cut-off frequency (fi) of the common-emitter amplifier circuit. 9. Find the mid-band voltage gain. 10. Plot the frequency dependence of the amplifier overall voltage gain (in dB). Consider common emitter amplifier circuit below. Use Vcc=10V and transistor with ß-100 and VA 100V. R₂= 30 kn, R₁ = 70 k, R₁: 2 kQ, Rc 4 k2, Rsig 5 kn, R₁. = 5 kn. Vcc Ra www Rin 00 www www R₁ R₂ www Rc RE 60 RL - 1. Find the bias collector current. Calculate the values of small signal parameters gm, In and ro. 2. Sketch an equivalent circuit of the amplifier for AC signals using hybrid- small-signal model of BJT. 3. Find the value of the overall amplifier input resistance. 4. Find the value of short circuit current gain (replace R₁ with short to ground in equivalent circuit). 5. Find the value of the mid-band voltage gain from signal to the load. 6. Find the maximum allowed amplitude of AC output voltage that would keep transistor in forward active mode (i.e. no clipping). Augment the equivalent circuit with transistor internal capacitances C₁ = 1pF and C₁ = 0.1pF. 7. Find the unity-gain bandwidth of the BJT. 8. Find the 3dB cut-off frequency (fi) of the common-emitter amplifier circuit. 9. Find the mid-band voltage gain. 10. Plot the frequency dependence of the amplifier overall voltage gain (in dB).

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SOLUTION SK2 Vsig R 87 30KS R writing Vth Vcc 10V DC colleador cunnert gm 1271 JB KU ... View the full answer