5) Determine (i) the output DC voltage, Vdc, and (ii) current through RL for the rectifier circuit below (Figure 2) (25 m) 170 Vac 60 Hz 0.5 ? 15 mH 124 ?H (1 turn coil) Vd = 0.76 V 1N4148 RL 1 k? Vdc Figure 2 6) Sketch the common-base BJT transistor configuration and describe its input/output terminals and input/output signals. (5 m)
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12. A base current of 50 μA is applied to the transistor in Figure 4–53, and a voltage of 5 V is dropped across RC. Determine the βDC of the transistor. 13. Calculate αDC for the transistor in Problem 12. 14. Assume that the transistor in the circuit of Figure 4–53 is replaced with one having a βdc of 200. Determine IB, IC, IE, and VCE given that VCC = 10 V and VBB = 3 V. 15. If VCC is increased to 15 V in Figure 4–53, how much do the currents and VCE change? 29. Determine IC(sat) for the transistor in Figure 4–58. What is the value of IB necessary to produce saturation? What minimum value of VIN is necessary for saturation? Assume VCE(sat) = 0 V.
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