1. Consider the series in the following image Xsci D1 D3 R1 Vi Vo D2 D4 20 V Determine which diode is active for V; > OV! Then Draw a series of suitable substitutes! b. Determine which diode is active for V; < OV! Then Draw a series of suitable substitutes! c. Graph the output voltage V, versus time for the input signal! a. 2. Based on the sequence in number 1, answer the questions following . Calculate and determine the amount of current flowing through the diode! b. Change and determine the size of the resistor used so that the dissipated power on the resistor becomes 500 mW.