Question

16 A, β= 100, and Also, assume the ca large. and 1O voltage gain. Assume la = 00. impedances of the circuits shown in Fig. 5.130. Assume V 5.38. Determine the voltage gain a Vcc Rc Vcc Vout Vino-ーにQ1 a2 RE Rc Rc RB Vout Q2 RB 01 01 VB Figure 5.130

please solve 5.38.

Answer 1

Given that equation is The voltage gain and I/O Assume V_A = infinity Then the impedances at the circuits The given voltage gain A_y out the above circuits is given by A_y = R_1 + 1/g_m_2 1/C/1/g_m_1 + R_E \r\n Here A_y implies R_1 + r^2/g_m_2/r_2 + 1/g_m_2/1 + R_E g_m_1/g_m_1 A_y implies R + r_2/g_m_2/rg_m_2 + 1/f_m_2/1 + R_E g_m_1/g_m_1 Therefore Hence the equation is impedances of the circuits are assume. \r\n A_V = R_1 + r_2/1 + r_2 g_m_2/1 + R_E g_m_1/g_m_1 Here the equation = [R_1 (1 + r_2 g_m_2) + r_2]/(1 + r_2 g_m_2)/1 + R_E g_m_1/g_m_1 The value of A_V A_V = g_m_1 [R_1 (1 + r_2 g_m_2) + r_2]/[1 + R_E g_m_1][1 + r_2 g_m_2] The given I/O impendance It is input impendanece of the circuits is given by R_in = r_1 + (1 + beta_1)R_E R_in = r_1 + R_E + beta_1 R_E Therefore Here the values are out the circuits