a) What are the majority carriers in the base region of a npn transistor called? Explain...

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a) What are the majority carriers in the base region of a npn transistor called? Explain the purpose of a thin, lightly doped base region. Why is the base current in a transistor so much less than the collector current? For normal operation of a pnp transistor, the base must be (+ or -) with respect to the emitter, and (+ or -) with respect to the collector. b) A base current of 50 mA is applied to the transistor in Figure1.1, and a voltage of 5 V is dropped across Rc. Determine the B and a of the transistor. c) Assume that the transistor in the circuit of Figure 1.1 is replaced with one having a ß of 200. Determine IB, Ic, IE, and VCE given that Vcc = 10 V and VBB = 3 V. Rc 1.0 k2 RB 100 kn VBB Figure 1.1 a) What are the majority carriers in the base region of a npn transistor called? Explain the purpose of a thin, lightly doped base region. Why is the base current in a transistor so much less than the collector current? For normal operation of a pnp transistor, the base must be (+ or -) with respect to the emitter, and (+ or -) with respect to the collector. b) A base current of 50 mA is applied to the transistor in Figure1.1, and a voltage of 5 V is dropped across Rc. Determine the B and a of the transistor. c) Assume that the transistor in the circuit of Figure 1.1 is replaced with one having a ß of 200. Determine IB, Ic, IE, and VCE given that Vcc = 10 V and VBB = 3 V. Rc 1.0 k2 RB 100 kn VBB Figure 1.1

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