The forward-bias voltage (V) required to maintain a PN diode current (I) is a function of the temperature (T). (a) Derive an expression for SV/ST. (b) What is a typical value for a silicon diode? (c) Compare the result of (b) with a numerical value extracted from Fig. 4-21.
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- How is a solid-state diode tested? Explain.For the subsequent questions, please refer to the circuit below. Assume that the diode is ideal (e.g. the voltage across it is zero volts when it is ON) IK VIN=7V = J Syt + Jo Vo Suppose we assume the diode is ON, this is a wrong assumption because when we solve for lo with the diode as a short-circuit the condition ID>=0 will NOT hold as lp will be (in mA) ... Suppose we assume the diode is OFF, what is the resistor current I in mA? Suppose we assume the diode is OFF, what is Vo in volts? Suppose we assume the diode is OFF, our assumption is correct because the condition VD<=0 will hold as Vp will be (in volts) ...We know that the Si-diode will pass the current in a forward biased region. This behavior is useful for many applications. C)Plot the V-I Characteristic Curve of the diode.
- A Si pn junction diode is operating under forward bias conduction. If the forward current is 4 mA and the reverse saturation current is 1 nA, then what will be the voltage across the diode? Assume the diode is kept at 400 K temperature.From the diode circuit shown below. If E=40 V and RL=400, determine the current supplied from the battery. the voltage across the load resistance. and the voltage across diode D2 if all the diodes are silicon with an internal resistance of 2 0. RL E= a. The Current supplied by battery is b. The Voltage across Load resistance RL is c. The Voltage across diode D2 isThe following circuit uses two Zener diodes with reverse breakdown voltage of 5.1 V for each. (1-a) Explain the operation of the Zener diode in forward and in reverse bias. (1-b) Analyze the circuit thoroughly assuming many source values that lead to all possible cases of diode states. For each case (Hint: 3 cases), re-plot the circuit and develop the relation between the output voltage and the source. (1-c) Draw input and output waveforms accurately over 0.5-ms period. Identify the diode states on the graph based on the categorization of cases from part (1-b). (1-d) Use Multisim to verify all of your results. Compare andcomment.
- The diodes in the circuit are Silicon with aforward voltage of 0.7 V. Fill up the tableshowing the state, voltage and current ofeach of the diodes. Show how youvalidated the state of each diode. Followthe reference shown in determiningwhether the diode voltages and currentsare positive or negative.In this Zener diode regulator, the source voltage varies from 6 V to 11 V. Assume that the load current varies between 1 mA and 38 mA, and that the diode is an ideal 4 V Zener diode. What is the largest allowable resistance that will ensure the load voltage remains constant with variations in load current and source voltage? Please enter your answer to 3 significant figures.In this Zener diode regulator, the source voltage varies from 8 V to 13 V. Assume that the load current varies between 1 mA and 39 mA, and that the diode is an ideal 3 V Zener diode. What is the largest allowable resistance that will ensure the load voltage remains constant with variations in load current and source voltage? Please enter your answer to 3 significant figures.
- Question 1 (a) (i) (ii) (iii) Plot the current-voltage characteristic of a p-n diode. In your plot include the forward bias region, reverse bias region and any other important features. Explain what is the major difference between a Zener diode and a p-n diode. Provide one electronic application where a Zener diode is used.For the subsequent questions, please refer to the circuit below. Assume that the diode is ideal (e.g. the voltage across it is zero volts when it is ON) IK VINZI IN=IV (+) I Sv(t Jo Vo Suppose we assume the diode is ON, what is V. in volts? Suppose we assume the diode is ON, what is the resistor current I in mA? Suppose we assume the diode is ON, our assumption is correct because the condition ID>=0 will hold as lp will be (in mA)... Suppose we assume the diode is OFF, this is a wrong assumption because when we solve for Vp with the diode as an open-circuit, the condition VD<=0 will NOT hold as Vp will be (in volts)...Question 2: (show your detailed answer for each part of questions below) a) For the series diode configuration in the figure below, determine VD, VR and Ip. + Vn Si 10V 3 kn V b) Calculate the current through a 70 2 resistor in the circuit shown in the below figure. Assume the diodes to be of silicon and the forward resistance of each diode is ta-1 2 Show the answer steps. D Dz 70 n www 20 V DA Dy