Question

Problem 3: For the bias circuit shown below, perform the following knowing that VCE(sat) = 0.2V: (a) Solve for the Q-point (Ic and Vce). (b) Check the thermal stability of this bias circuit. (c) Draw the DC load line of the circuit and locate the Q-point on it. (d) If AC waveforms are superimposed, calculate the maximum lcſpeak), maximum lofpeak), and maximum Vcelpeak) for linear operation, i.e. without having waveform distortion. Vec +10 V Rc 2 k2 RB w 20 k92 O Bpc = 110 = 2V

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Answer 1

Given that olov 2012 2KR 紅 Toolb + YIB Pocillo VCE + D LIES 12V by KVL- Kuu 10-20111IB ) - 20 IB-0-7-2= 7.3= 202IB IB = 0.0308 MAI so Ie-110 IB . (110) (0.0301) Ic= 3.311 mA "O 20111 IB)-VE-2=0 VCR = 8-22IB or veka 8- (222) C0-0301) INCE= 1.3178 v a point is It=3.311 mA VCE=1.3178 ③ we know that stabteity factor css is given by - TOV It Poc 1-BpaZoo 20kn Ръс 2l & ICHIB t. IB VIC VE wo Signatu

by Kv KVL- 10 - 2(Ie + IB) -20 IB -0.7-2=0 7-3-2 Ic=22IB z = 22 2IB sic 23 so arc 1t1no | -(110)(- S = 10-09 o value is not so unstable - So BJT is thermo high to be thermally mally stable. © by KVL- 10 - 2 (ze + IB)~ VE-200 and те Ic Boo 10 2 Ict IC 2 =VCE co) ITO OY 8-2.618 IC o 3.964-o-ug5VCE Ic (013-964MA) ca (1-3128 N, 3.311 MAJ VCE (800)

e So Ic peak= 3.9640mA and (IB) peak (Ic) peak ß pc (IB) peak= 3.364 (ZO) peak= 0.0 36 mA (veel beale = 8V Please like my solution.