For the amplifier circuit shown below, given ẞ=hfe=100, re=502, Cbe=1pF, Cce=2pF, Cbc=6pF. Find fL, C₂, fн? (3 marks) VCC R₁=200K R-100 C1=2uF ww R2=200K ww ww ww Re=10052 C2=? 10 Q1 Vo -R₁=10052

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Vin For the circuit shown, draw the corresponding small signal model. Vcc Vcc Vcc W ww|ll. R1 R2 WWW Q1 Q2 Re Idc Vo

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Consider the circuit of Figure 1, with a periodic square signal voltage source at a frequency f = 500 [Hz], consider R = 1600 [22]. Solve the circuit and plot on graph paper (minimum 10 values between 0 and 2 milliseconds) the total current response, taking into account the source Vin = 24 [Vp]. Note: identify in the graph maximum and minimum points of the total current response. Vin CH1 L m 160 mH, 4 Q CH2 REF Figure 1. Series RL circuit. Note: to do by differential equations and not to use laplace

Please write legibly 1.draw the small signal model of this circuit. 2. Find the total transconductance Gm 3. Show how Rop was derived

LAB 5.pdf File C:/Users/Asus/Desktop/SEMESTER%20SUBJECTS/SEM%20... Not sy of 7 A PRE-LAB CALCULATION Determine the small-signal voltage gain, Av of the cireuit in Figure 1. Given forward transfer conductance, gm=2000uS. 20 V 200k 2.2k 2.2uF A 2.2uF RL HE 1k RS 50k 1k FIGURE 1 PROCEDURE Part A: AC Analysis i. Construct the amplifier circuit as shown in Figure 1. ii. Set the signal generator output to 0.5 Vp-p at 5 kHz. . Measure Vinp-p and Voutp-p Determine the gain Av. Part B: Output Impedance O lype here to search

Fill in the table VB VC VE Ic LE I8 fre IT gm 5V Consider the circuit given at the right. 600k 1.5k =0.7, Vauo, B=165) 100uF Vo 1k 100uF a) Perform DC analysis and calculate all VB =? VC:? branch currents, node voltages, and small signal parameters 3K VE=? Rout b) Draw a small-signal equivalent model n Vin Rin 400K c) Calculate Ri, Rout, and Ay=Vou/Vin -5V

3. The signal power at the input to an amplifier is 100μW and the noise power is 1μW. At the output, the signal power is 1W and the noise power is 30mW. What is the amplifier noise figure, as a ratio?

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