[20 minutes] 6.4 [20 points] +5 V 100 kn QN 6-2 Design the circuit in Fig. 6.5.1 to obtain /₁ = 0.1 mA, VB1 =+4V, IE1 = 1 mA, Vc₁ = +6V, 1E2=2 mA, and Vc2=+4 V. Let B₁ =ẞ2=100 and IVBE =0.7 V. Specify the required values of all resistors. 6.6 -OVO +1.5 V Չ 10 ΚΩ -5 V Figure 6.4.1 The BJTs in the circuit of Fig. 6.4.1 have ẞ= 100 and VCEsat =0.3 V. Find vo for each of the following cases: (a)=0V (b) = +5V (c) v=-5V (d) =+10 V (e) v=-10V [20 minutes] 6.5 [18 points] Vee=+15 V R₁ RA w VCI V810- R₂ Figure 6.5.1 R₁ li Love I R6 R₁ ImA Vo [10 minutes] [10 points] Figure 6.6.1 -1.5 V The BJT in the circuit in Fig. 6.6.1 has Is = 10-15 A at room temperature. (a) Find Vo at room temperature where VT is [4 points] 25 mV. (b) If the temperature increases by 50°C, what will [4 points] Vo become? (c) If, alternatively, the temperature decreases by [2 points] 50°C, what will Vo become?

Fig: 1