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5. Determine the following parameters for the amplifier of figure 4. Assume B= 150 and VA- 120V. a. ICQ and VCEO b. Rin ܟܘ ܝܟ
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De analysis: Ncc = 16V SRC= 4.3 Uth= VCCX R Ratra Rthy 12.5 Vi Vth = 168 Um 15K 15k+75k UBE ** 2.67V IRE, GRE2 1 = 1.633 kr I16-VC - 4.3K = 1.14 ma Vc = 16- Cl-lumax4.3k ) ve e 11.lv VE = TE RE IE = Ist I c IE = 7.6MA + 1.14 mA IE = 1.148 MA VE liurmInput Impedance Ri = vi Kul at tlp loop Y 0 -Vit hie If + (ithfe) IL RE, = 0 ni = H (hiet (l+hfelRfi] Ria - [hie+ (it hfe) Revoltage gain Au= = IRL AV (NL) = Vo = -hte Il Rey Iphie +(lthfe) RE, AV (NL) = -hfe Re [. substitute vi from esmo hie +(IthAI =-hfe AI = -150 AIA the =p power gain Ap = Av. AI Ap = -5.54 vv X (-150 AIA) Ap = 831-52 w/w

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