Test 2 - l1? .\’§7 Q .OlZ) Test 2 - Spring 1996 - M....

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Unformatted text preview: l1? .\’§7 Q .OlZ) Test 2 - Spring 1996 - M. Cahay Name: ELECTRONICS I May 13, 1996 I. For the circuit shown below, assume the diodes to be ideal and find the values of the labelled voltages and currents. O l7 0U II. A single measurement on the circuit below indicates that the emitter voltage of the transistor is 1 V. Assuming that VBE is 0.7 V, calculate V3, 13, Ic, [3 and a. III. In the circuit shown below, 11, is a small sine-wave signal with zero average value. Find the input resistance Rgn and the voltage gain vo/v,. Assume fl = 50. If the amplitude of the signal vbe is to be limited to 5 mV, what is the largest signal which can be fed at the input? what is the corresponding signal at the output? give/n (u; : _ (yaw/m WE Jig-Hi}; IV. In the common-emitter amplifier shown below, VCC = 9V, R1 = 27“), R2 = 15kQ, R5 = 1.2199, and RC = 2.2M). The [3 of the transistor is 100 and VA = 100 V. Calculate the dc bias current I E. If the amplifier operates between a source for which R, = 10 k0 and a load of 2M2, replace the transistor by its hybrid-1r model, and draw the amplifier equivalent circuit. Find the values of Rh Gm, R0, Au, and Ai- % ’ R R> VG I v - we: f’ogwmv k M - _ ' a MS .2 _ Ar _ "’5 N3_ R 6 W? R: (Ra/32H>—‘€,6H//LB fl gym?“ Mb _TV?_W_#T?_Q a“: ——3 m; _/:w 2 mM/@ 7% ; — gigfiéqz )I/z) RC; [QC/720:2; 3’24: 2-11 #12 70%,: —~ $151M? ...
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This note was uploaded on 04/09/2008 for the course ECEE 351 taught by Professor Cahay during the Fall '97 term at University of Cincinnati.

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Test 2 - l1? .\’§7 Q .OlZ) Test 2 - Spring 1996 - M....

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