a) Draw the ac (small signal) model of the circuit
b) Populate the chart
c) Draw one complete voltage cycle for Vc1(t), Vc2(t), and Vo(t) for an input Vi ranging from 1mV to -1mV (2mVp-p)
a) Draw the ac (small signal) model of the circuit b) Populate the chart c) Draw...
Example 13.4: For the figure below, a) Draw AC and DC load lines for both transistors. b) Calculate the overall voltage gain Avs o/vs c) Find s(max) which produces maximum undistorted output voltage. 20V Q1 Q2 hFE=htp= 100 100k2 Rc 1k R VBE 0.6V R2>100k Q2 R. Cc Q1 Co 1kn o Vo R1 10k RE2 1k RL1K2 RE1 1kn CE Figure 13.6: An AC-coupled two-stage BJT amplifier for Example 13.4.
Example 13.4: For the figure below, a) Draw AC...
2.34. Consider the common-emitter amplifier on the right. (a)Draw a small-signal equivalent circuit using the T-model without the B1 Cci output resistance (b)Find an expression for the input resistance Rin. (c)Find an expression for the output resistance Ro. (d) Find an expression for the lower cut-off frequency Vi Re sig 82 C, (RE-R) in associated with Cci. (d)Find expressions for the two gains vo/v, and v/Vsig CI.
2.34. Consider the common-emitter amplifier on the right. (a)Draw a small-signal equivalent circuit...
5. (20 points) For the amplifier in the following figure: +Vcc Rout Rc C3 R2 Rin Ri 1 k R3 Vo Vi R1 RE -VEE a) Draw the de equivalent circuit and find the Q-point. Assume B -75 b) Draw the equivalent circuit used for ac analysis. Find the values in Thevenin equivalent representation for the amplifiers between C, and C as shown below. What is the maximum value of v, that satisfies the small- signal assumption? Rout Ri vi...
2. For the common-emitter amplifier. B= 50. Vcc=12 a) Draw small signal circuit b) Find vout/vin Find Zin and Zou Vcc R1 27k R2 2.2k Zout Zin Vo 4 C1 16 BIG Q1 NPN V1 C2 V R3 15k RE 1.2k BIG