Lab10_Prelab - Prelab 10: Differential Amplifiers Name: Lab...

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Unformatted text preview: Prelab 10: Differential Amplifiers Name: Lab Section: For this lab, assume all NPN transistors are identical 2N3904 BJTs and all PNP transistors are identical 2N3906 BJTs. Component I S (A) V A (V) 2N3904 NPN BJT 6 . 734 10- 15 74 . 03 2N3906 PNP BJT 1 . 41 10- 15 18 . 7 Table 1: Transistor properties A differential pair with a resistive load is shown in Figure 1; use this circuit to answer the following questions. Note: You can ignore base currents for this analysis, but you must use the device parameters given in Table 1. Assume V CC = 9 V and that the inputs are biased at 0 V DC.- V CC V CC Q 1 R 1 Q 2 Q 3 R 2 Q 4 R 3 v in + v in- + v out- Figure 1: Differential pair with resistive load 1. What value of R 1 corresponds to I C 1 = 2 mA? R 1 = 2. In lab, we have 500 , 1 k, 5 . 1 k, and 10 k resistors. Suppose you only wanted to use one resistor for R 1 , which value would give the I C 1 closest to 2 mA? What current would you get with the resistor you chose? Use this value for R 1 in the remainder of this prelab....
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Lab10_Prelab - Prelab 10: Differential Amplifiers Name: Lab...

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