3. By referring to Figure 2, draw approximate circuit and determine Vasij, Vsia), Ir, Vaimit for the following diode models: a. ideal b. practical c. complete (r'as =ra=50) Siz RUMIT 2.2 ka VBIAS = 18 V Figure 2
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- Consider the circuit with three diodes and a AC input, as shown below: D2 R1 D1 D3 R2 Assume that the input AC voltage is Ttsin(100TTT). You may consider the diodes to be ideal. mean voltage generated across resistor R2 is (assuming current direction to be from AC so into R1, through diode network, and through R2 from top to bottom): O a. 0.5V Ob. -0.5V O c. 1V O d. OVFor the circuit shown in Figure, consider Ideal diodes. If Vs = 19sin wt, Vb = 4 V, the minimum value of output voltage is: Vout at of estion Vs Vb Oa. -4 V Ob. -15 V Oc. -19 V Od. 4 VC. In the circuit shown below the knee current for the ideal Zener diode is 10 mA Calculate the minimum value of load resistance RL in order to maintain 5 volts across the load resistance RL 2. WW-
- A sinusoidal voltage of peak value 50 V is applied to a diode as shown in the figure. Sketch the waveform of voltage Vo treating the diode as an ideal one.Consider the circuit shown in Figure 2. The cut-in voltage of each diode is . Let and assume both diodes are conducting. Determine if this is a valid assumption and explain your answer. And calculate the values of IR, ID, Ip2, and V.. Rj =1.7 kQ ww VB =1 V D1 Dz R2D 4 kQ Figure 2Sketch the I-V characteristic curve for a real diode and label the main parameters and regions.
- Consider a silicon pn junction diode at T 300K. The reverse saturation current is Is = 10-14 A and the ideality factor n = 1. Determine the diode current for a diode voltage of VD = 0.573 V and use that to determine the DC and AC resistance of the diode. RDC = 14.13 k rac = 639 Q RDC = 234 Q2 = rac=8Q RDC = 7.00 KQ rac = 307 Q RDC = 1.43 kQ rac = 58 QIn the circuit shown in the figure, diode voltages are given as 0.6V and rD = 100 ohms. When point B is open circuit AIf + 5V is applied to the point of application, drawing the shape of the circuit formed and calculating the currents passing through the resistors.calculate.For the circuit in the figure below, in which the diode has a value Vd = 0.7 V: Calculate the two values of Vout. Calculate the value of Vin that will cause Vout to change between the two levels found in part a). Sketch the signal Vout. Include values for time and voltages.
- In each of the ideal-diode circuits show below V1 is a 1kHz, 10-V peak sine wave. Sketch the wave form resulting at V0. What are its positive and negative peak values?A. In your own words and with the aid of suitable diagrams, describe the following: a) The zener diode and its characteristics. b) Design a limitter circuit using diodes to limit the output voltage to 4.7V during the positive signwave and to -6.7V in the negative signwave. B. Consider the following circuit. Suppose that diode D1 is ideal. a) Give the state of the diode D1: conductive or blocking. Explain. b) Calculate the current flowing through D1. c) Calculate the voltage VR2 across the resistance R2. 1kQ D1 R1 R2 1) ImA 10V 4KQ C. In the circuit shown below the knee current for the ideal Zener diode is 10 mA. Calculate the minimum value of load resistance RL in order to maintain 5 volts across the load resistance RL. 1002 IL 10V V, = 5V A RDesign a clipping circuit that will limit the output voltage to 5V when applying an input sinusoidal waveform with a peak value of 10V. Assume available diodes with voltage drop of 0.5V. Sketch the output waveform of the circuit.