Question

Please show all work

For the following circuit, VBB-8V, RB = 30K, and RE= 1.2K. Find 1, 1,18 VCE.VBE = 0TV , β = 75. +12 V 0.4K Q1 30K 1.2k

Answer 1

Apply kUL for input loop V_B = I_BR_B + V_BE + J_E R_E I_E = (1 + B) I_B V_B = I_B(R_B + (I + A) R_E) + V_BE Therefore I_B = 8 - 0.7/30k + 76 times 1. k I_B = 60.231 mu A Therefore I_B = (1 + 25) (60.23 times 10^-6) T_E = 4.577 mA I_C = B I_B I_C = 75 times 60.251 times 10^-6 I_c = 4.517 mA Apply kUL for output loop V_c = I_cR_c + V_CE + I R_E V_CE = 12 - (4.517 m) (0.4 k) - - (4.57) (1.2k) V_CE = 4.7008 V

If you have any doubt please make a comment. Thank you