Question

Solve 5 in laboratory procedure show all work

5. Assume D,-D;-D-D.-IN4001, Re-100 Ω.G-220 μΡ, for Figure 7.5. Determine the effective input resistance, Rin, to the 7805 regulator if lin is 50 mA. Calculate the ripple at V a. b. Using the ripple rejection from the datasheet in Appendix B, estimate the ripple out at terminal 3 Figure 7.5 Voltage Regulator Note: In the lab you will measure the de current going into terminal 1 and recalculate the ripple voltage to see if it agrees with the measurement. IV. Laboratory Procedure Note that Appendix B contains the datasheet for the 7805 regulator chip. I. Construct the circuit of Figure 7.1. Measure Vi, Vour using the oscilloscope. 2. Construct the circuit of Figure 7.2. Measure Secl, Sec2, Vour using the oscilloscope. 3. Construct the circuit of Figure 7.3. Measure Sec1, Sec2, Vour, using the oscilloscope. 4. Construct the circuit of Figure 7.4. Measure Sec1, Sec2, Vours Vx using the oscilloscope. 5. Construct the circuit of Figure 7.5. Measure lin using the DMM, calculate Rin. Calculate the ripple voltage at V, and compare to the measured ripple at V,. Measure the ripple at R. Decrease C to 100 uF, to increase the ripple. Measure V, and explain what's happening. Note: To measure the ripple at pins 1 and 3 of the 7805, be sure to set the coupling of the scope to AC rather than DC as the ripple will be very

Answer 1