Week2 Lab 4 Diode Limiters-OL

1N4001, 1N4002, 1N4003, 1N4004, 1N4005, 1N4006 and 1N4007  For any of the diodes, describe with the aid of diagrams/illustrations its applications in an AC to DC Bridge rectifier power supply circuit. For your circuit show and describe how you are going to smooth out the ripple voltage that will be present.

Consider the following circuit diagram. Using practical diode model solve the following items. i. What is the type of rectification in this circuit? ii. Calculate the total peak secondary voltage (Note that “RMS" value is given in the circuit) iii. Sketch the plot of time vs voltage over Load (RL) iv. Find the average voltage over Load. v. Find the maximum current passing over diodes. vi. Find the peak inverse voltage (PIV) over the diodes. vii. Find the minimum fuse current rating for the primary coil. 5:1 D DA 120 V rms D3 D2 RL=10kQ RL out ell lelll

S-2) a) On the bridge type full wave rectifier circuit given in the figure Plot the current paths for each of the +/- alternans. b) The waveform of the Vç output voltage is given in the graphs on the side. Draw it in the blank and calculate the peak value and indicate it in the graph. c) Calculate the effective value of the output voltage. (Vç (eff) =… ..?). Note: Diodes are not ideal. VD = 0.7V.

Q1 Figure Q1(a) is a full wave bridge circuit with a capacitor filter and the output waveform produced by the circuit is shown in Figure Q1(b). Assume all the diodes in the circuit have a forward voltage of 0.7 V. (a) Sketch the waveform in A, B, C and D as shown in Figure Q1(a). (b) Design the circuit by finding the value for the capacitor, C and the line voltage Vpri(rms) to the circuit to produce the output as shown in Figure Q1(b).