1-3 2. At the end of the experiment, the student will be able to Explain the function of a Zener diode; Explain Zener Diode as Voltage Regulator; Zener Diode. This may lead to damaging of the diode. We can add an external negative voltage source to combine with the positive internal voltage to produce a total voltage high enough for this experiment. Zener Diode Characteristics. Sl No Name of Experiment Page No 1. To measure the reverse breakdown voltage of your Zener diode we need to produce a voltage difference larger than the breakdown voltage of the 6.2 V 1N4735 diode. Zener diode regulator. # Characteristics of a Zener Diode The above diagram shows the V-I characteristics of the Zener diode behavior. The critical parameter of this type of diodes is the Zener breakdown voltage. 10-1 2 This is considered as the basic application of Zener diode. A Zener diode is a diode which allows current to flow in the forward direction in the same manner as an ideal diode, but will also permit it to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage When the positive polarity is at the cathode – the diode is reversed biased and is not conducting. David started the tutorial comparing between zener and regular diode. Build the circuit shown in Figure 1 on your solderless breadboard using the 1N4735 6.2 V Zener diode. This experiment is composed into 2 objectives. By connecting the negative terminal of the battery to the diode anode terminal, zener diode starts operating in the reverse bias or breakdown mode. The unit is supplied with a breadboard to help students experiment with test circuity using various components without having to solder. (Note: All or any pre-lab works must be completed before coming to the lab and must be handed-in to the lab instructor during entering the lab and at the beginning of lab session) Procedure Zener diode I-V characteristics 1. Zener Diode V-I Characteristics. The I-V Characteristics Curve of a zener diode, shown below, is the curve which shows the current-voltage relationship of a zener diode. To find load regulation characteristics of Zener voltage regulator Apparatus: S.no Apparatus Range Quantity 1 Zener diode 1 2 Resistance 470-ohm 1 3 Regulated power supply 0-30V 1 4 Ammeter 0-100 mA 1 5 Voltmeter 0-10 V 1 6 Breadboard and wires 7 Variable resistor ( 100-1100-ohm) Introduction: An ideal P-N Junction diode does not conduct in reverse biased condition. Connect voltmeter and ammeter in correct polarities as shown in the circuit diagram. 3. Zener diode is nothing but a single diode connected in a reverse bias mode and Zener diode can be connected in reverse bias positive in a circuit as shown as picture.we can connect it for different applications. Using both charts, plot the complete IV terminal characteristics for the Zener diode. While doing the experiment do not exceed the readings of the diode. 18 ZENER DIODE Experiment No. Use AWG1 (5 V constant) and the –5 V Vn user supply to establish the dc supply V IN. You will need to wire this on your breadboard. Zener Diode Characteristics - Zener regulator Prelab: You are tasked to determine experimentally the characteristic curve of a reverse-biased Zener diode. Understand Zener Diode Datasheet Specifications. The ADALM1000 hardware can only produce (and measure) voltages up to the 5 V maximum. The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. Zener diode regulator breadboard circuit. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. When the reverse bias voltage is greater than a predetermined voltage then the Zener breakdown voltage occurs. For V s between 0 to 20V, obtain values for I z and V z. To Study the Reverse characteristics of Zener diode. First, we will look at the general laboratory experiment and it’s format. 4-6 3. To Study the working of a diode as half w ave rectifier with and without filter. What we are trying to achieve in this experiment is to demonstrate that a diode exhibits a behaviour as described by Figure 4. Electronic & semiconductor devices Page 5 of 7 INTERNATIONAL UNIVERSITY SCHOOL OF ELECTRONICS & TELECOMMUNICATIONS ENGINEERING (EE) 1. Use various fixed and variable resistors for R L. Figure 1. 2. The typical forward voltage at room temperature with a current of around 1 mA is around 0.6 volts. C. Half Wave Rectifier Build the rectifier circuit shown in Figure 4. The VI characteristics of a zener diode is shown in the below figure. To get breakdown voltage sharp and distinct doping is controlled and the surface … A number of ready to use experiment circuit boards are provided. Here we go with the Zener Diode Characteristics Experiment Using Multisim Software Circuit Diagram: Figure 1 Zener Regulator Zener Diode characteristics: VI characteristics of Zener Diode. In general, the cathode of a diode is marked by a solid line on the diode (Fig. The circuit symbol of Zener diode is as shown in the figure. They provide a low-cost and no frill method for voltage regulation. Two terminals: anode and cathode. base unit, oscilloscope and a dc supply we can demonstrate the characteristics of the zener and its application for voltage regulation. On the first objective of the experiment, the group demonstrated the dc characteristics of the Zener Diode with the use of a breadboard. Zener Diode Makes For A Lousy Regulator Bald Engineer. Plot the reverse characteristic curve by taking reverse voltage along –ve X-axis and reverse current along –ve Y-axis. The break down voltage Vz is obtained from the graph as shown below. The above diagram shows the V-I characteristics of the Zener diode. Experiment 4 Characteristics of a Silicon Diode and the Zener Diode Introduction The diode is a device formed from a junction of n-type and p-type semiconductor material. To Study the working of a diode as Bri dge rectifier with and without filter. This article will help to explain the characteristics which make up zener diodes, specifically how the voltage across a zener diode varies with the current flowing through it. Result: Volt-Ampere Characteristics of P-N Diode are studied. When forward biased voltage is applied to the zener diode, it works like a normal diode. Make sure that the thermocouple is in the vicinity of the diode. EXPERIMENT NUMBER 4 Examining the Characteristics of Diodes . Pn Junction Diode Characteristics Experiment Using Breadboard March 30, 2019 Get link; Facebook; Twitter; Pinterest; Email We are going to take Zener I-V Characteristics Curve experiment as an example to understand how we can perform a general experiment using the PSLab device. Experiments: Silicon, Zener, LED Diode Characteristics; Common Base NPN and PNP Transistor Characteristics Figure 4 shows a case in which reverse-bias breakdown of zener diodes limit the voltage swing across the load resistor. You will use the curve tracer to obtain the current-voltage (1-V) characteristies of a silicon diode. Materials and Equipments: 1 Industrial Electronics Trainer III. Do not switch ON the power supply unless you have checked the circuit connections as per the circuit diagram. By using a breadboard, Zener diode, a diode, resistors, a digital multimeter, F.A.C.E.T. Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. Preface: ... Another use of diodes, especially zener diodes, is as a limiter. When the diode is connected in forward bias diode acts as a normal diode. Procedure: Step 1. The experiment is continued till the milliammeter shows a large deflection while the voltmeter reading remains a constant, indicating the break down voltage. 2. • To measure the important parameters of Zener Voltage Regulator. With these, the group was able to observe how a Zener Diode acts like a rectifier diode when it is forward bias and a voltage regulator when it is in reverse bias. Laboratory Exercise 2 Diode Characteristics PURPOSE The purpose of this experiment is to acquaint you with the operation of diodes. Then we will see how that experiment can be performed using the PSLab Android App and the PSLab Hardware Device. When the positive polarity is at the anode – the diode is forward biased and is conducting. • To study the concept of designing a Zener Voltage Regulator. What Is Zener Diode Operation Principle Types Uses Of . What Is A Zener Diode Definition Construction Working. In this way, it is used as a voltage regulator. The forward bias region of a Zener diode is identical to that of a regular diode. • Never use larger wire as jumpers. Conventional Zener Diode With Rz 30 W Shows A 1st I V. Why … INTERPRETATION OF RESULTS This experiment demonstrates the characteristics of a zener diode. To find Zener break down voltage in reverse biased condition. However, when reverse biased voltage is applied to the zener diode, it works in different manner. Chapter 2 Zener Diode Zener Diodes The Breakdown. 4 I. To calculate static and dynamic resistances of the Zener diode in both forward and reverse biased conditions (before, after break down voltages). 3.1 Diode Characteristics Small-Signal Diodes Diode: a semiconductor device, which conduct the current in one direction only. A single zener diode would limit the swing in one direction only. In the reverse bias condition the Zener diode is an open circuit and only a small leakage current is flowing as shown on the exaggerated plot. 7-9 4. You must also design a circuit that demonstrates the operation of a 7 V ± 5% loaded Zener regulator powered by a 12 V DC voltage source. The setup we are using for this experiment. We use Zener diodes for voltage regulation and voltage stabilisation. To Study the V-I characteristics of Forwa rd Biased PN junction diode. Connect the circuit in Figure 1.2. 4.1). To plot Volt-Ampere characteristics of Zener diode. Figure 2. #24 wire ... You will mostly use electrolytic and ceramic capacitors for your experiments. Electrolytic capacitors An electrolytic capacitor is a type of capacitor that uses an electrolyte, an ionic conducting liquid, as one of its plates, to achieve a larger capacitance per unit volume than other types. 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