4 0 obj $.' 5. They provide a low-cost and no frill method for voltage regulation. Zener Diode V-I Characteristics Introduction: The zener diode is a special kind of diodes which allows the flow of current in the forward region as a normal diode; but, it also allows the current to flow in the reverse bias region above a certain voltage known as the breakdown voltage. To plot Volt-Ampere characteristics of Zener diode. 5 FULL-WAVE RECTIFIERS AND POWER SUPPLIES Objective: The objective of this experiment is to study the performance and characteristic of full-wave rectifiers and DC power supplies utilizing Zener diode as a voltage stabilizing device. ��dEj.���|F���d��`d�E� "I��onj�(�$m�|ᗺ�����Q�Ⱥ�EGf�r�2�U���&�E�>o���W�հ�$�̉��8��" 7n�9q`uT�������mr���.�|�P��$��, The V-I characteristic of Zener diode indicates that characteristic of Zener diode in forward bias is same as PN junction diode. /Filter /DCTDecode It also permits the current to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage. ��K��&ށ��p��Ø=�_ /�*a������,ëJW9Yl�t��d�%�#0��t�2lͦ{iʐ ���-1�\�%� �; �Iܲ�'�5��E�j����r��XCB� jl09V,�����$����=]7��[�S>� ٱ#�“a�i������x�J�X��, ����P�|�,���L� jK`U���wR/��7���z!x#�z���v>2H�2Ó�a�"�s�1�w��uB9z$�`V�c&s����LA���,�a�e���2L)���;�ħ��4�l��`�G�A@d�O�� EXPERIMENT-1 AIM: 1. Physics LAB SUBJECT CODE: BT 2001 NAME OF DEPARTMENT: Engg.Physic Page 1 of 6 EXPERIMENT: ENERGY … Zener Diode Definition Zener Diode Working Zener Diode Circuit Symbol VI Characteristics of Zener Diode Zener Diode Applications FAQs. View Exp 4 - Zener Diode.pdf from ECON 200 at Colegio de Dagupan. Theory: Zener Diode: Zener diode is a heavily doped PN junction diode. /Annots 11 0 R Zener Diode Characteristics Experiment | zener diode Experiment - Duration: 11:31. 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 Zener Diode Characteristics - Zener regulator Prelab: You are tasked to determine experimentally the characteristic curve of a reverse-biased Zener diode. To calculate % line regulation 3. /Type /XObject Here V z is the Zener breakdown voltage. 2. ... 4 COURSE INSTRUCTOR: DATE: TITLE: OBJECTIVE: EXPERIMENT RESULT: Table 4-1 / 3 I-V Graph / 3 Table 4-2 / 3 / 9 POST LAB: Question 1: / 2 Question 2: / 2 Question 3: / 2 Question 4: / 2 Question 5: / 2 / 10 CONCLUSION: /1 / 20 Lab Experimental Skills ... Silicon Diodes … The right half side of the characteristics curve is the part in which the zener diode receives forward voltage, which is positive voltage across its anode to cathode terminals. Objectives: • To study the I-V characteristics of a Zener diode. To draw the characteristic curve of a zener diode and to determine its reverse break down voltage. 4 I. For correct voltage regulation, we need to find out precisely what voltage should be across the Zener diode.Zener breakdown voltage should be approximately close to the desired voltage we want. EXPERIMENT: DIODE & ZENER DIODE Objective:- To study the forward and reverse bias characteristics of diode and zener diode. when the voltage across the zener diode exceeds its zener voltage rating VZ). Forward biasing will cause a large I F with a rather small value of V F.Reverse biasing will generally not cause current conduction until … %���� 3 Course Outcomes 1. What is the breakdown voltage of Zener diode used in your practical? The VI characteristics of a zener diode … Placing the zener diode in parallel with the load as shown … the prelab corrected and P-N Junction Diode Characteristics Part A: Germanium Diode (Forward bias & Reverse bias) Part B: Silicon Diode (Forward bias only) 2. Warranty 19 5. EXPERIMENT-1 AIM: 1. /Width 554 Theoretical Background: A zener diode is a special kind of 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, "zener knee voltage" or "zener voltage." %PDF-1.5 6 0 obj ���� JFIF �� C /Contents 4 0 R : 5 Lab. a�d$B)�5�ꇿ���S�t�nC��U�AӴ�l-�-��ù�=�f��HK�l�c���,���yh !����3��vv_�Nd�H�>�M����/Q4��endstream The above experiment could also be used to investigate the variation in resistance of a thermistor as the temperature changes, and the variation in resistance of a light-dependent resistor as the light level is altered. Zener Diode - Load Regulation; Set DC voltage. The zener diode goes through a number of different regions or stages, of which are explained below. i�8�íb:N�BHэ6^�.λ1��e72���Øueq�4��َb�ګy Apparatus used: Zener diode, voltmeter (0-2volt), voltmeter (0-30 volt), mili-ammeter, micro- ammeter, variable source (0-2 volt and 0-30 volt). Fig 2:Zener diode characteristic curve The forward bias region of a Zener diode is identical to that of a regular diode. Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. 3.1 Diode Characteristics Small-Signal Diodes Diode: a semiconductor device, which conduct the current in one direction only. endobj Each diode was investigated by plotting the I-V curve using a Precision Source/Measurement Unit (B2902A) and a Laptop with the corresponding Quick I-V Measurement Software installed. To plot Volt-Ampere characteristics of Zener diode. Application of Zener diode: Zener diode as voltage regulator. 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 is a silicon semiconductor with a p-n junction that is specifically designed to work in the reverse biased condition. 1 0 obj <>>>/Group 216 0 R>> endobj However, the reason for this is some external circuit is required in order to protect the device from the excess current. The experiment is continued till the milliammeter shows a large deflection while the voltmeter reading remains a constant, indicating the break down voltage. Ltd. 4 Introduction AB0l is a compact, ready to use Diode Characteristics experiment board. Last Updated on December 18, 2020 by Swagatam 11 Comments. x��Ymo��n ��� 3. But due to higher doping concentration, higher current flows through the Zener diode. Diodes . characteristics of a typical Zener diode. But for simplicity, both types are called Zener Diodes. APPARATUS: Zener diode, Resistors, Power supply, Multi meter CIRCUIT DIAGRAM: THEORY: Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. View Exp 4 - Zener Diode.pdf from ECON 200 at Colegio de Dagupan. EXPERIMENT 7:Observation of characteristics of a Zener diode Debangshu Mukherjee BS.c Physics,1st Year Chennai Mathematical Institute 7.11.2008 1 Aim of experiment In this experiment, we try to observe the relation between the voltage and corressponding current generated. 993 Building a Voltage Regulator With an ideal Zener diode, construction of a voltage regulator is easy, simply connect the diode between the /MediaBox [0 0 612 792] Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. Theory:-A Semiconductor diode is prepared by joining P and N sections of a ... diode2.pdf . The zener diode is a semiconductor device unique in its mode of operation and completely unreplaceable by any other electronic device. Basic Electronics Notes on V-I Characteristics of Zener Diode in pdf V-I Characteristics of Zener Diode Zener Diode is a reverse-biased heavily-doped PN junction diode which operates in the breakdown region. /Filter /FlateDecode /Resources H��WKo1������c����M+Uj���4(iJi���]�_3����ewlό��f�h^LO9ᜊ�̯ 1 0 obj /Creator (pdfFactory Pro www.pdffactory.com) Some Zener diodes have a sharp, highly doped p–n junction with a low Zener voltage, in which case the reverse conduction occurs due to … There are several drawbacks, however, that will be discussed shortly. Applications of PN junction diode: Half & Full wave rectifier- Measurement of Vrms, Vdc, and ripple factor. This is an individual effort but members of a team can and should share insight, confirm results, and help ... • Characterize the operation of a Zener diode both experimentally and using PSpice simulation. VI characteristics of zener diode. characteristics of Different Diodes, BJT and FET Transistors, amplifiers and compensation techniques of transistors. We are going to learn about an experiment to find out the Zener breakdown voltage and draw the characteristics of Zener diode.Why should we do this experiment? When forward biased, it behaves like a normal signal diode, but when the reverse voltage is applied to it, the voltage remains constant for a wide range of currents. For Zener diodes, silicon is preferred to Ge because of its high temperature and current capability. VI Characteristics of Zener Diode. With the sufficiently applied reverse voltage, p-n junction experience a rapid avalanche breakdown and starts conduct … << /CreationDate (D:20090104170534) Its characteristics are otherwise very similar to common diodes. Choose Load Resistance in such a manner, such that the Zener diode is 'on'. stream Objectives: • Obtain the I-V curves of a signal diode and a zener diode • Compare the performance of different rectifier circuits . The Zener diode is a special type of diode that is designed to work in reverse bias and in the so-called Zener region of the diode characteristic curve. /Name /im1 Supervisor: Munther N. Thiyab Zener diode characteristics 1 Experiment #5 Object To study and measure the effects of forward and reverse bias on the Zener diode current. APPARATUS REQUIRED. 11:31. 2 Apparatus required a)A Zener diode b)A DC voltage supplier c)Bread board d)100Ω … Compute Vin(max) for the circuit ? Can we operate normal PN junction diode in breakdown region for lon ger duration? Figure 3.25 A simple regulator circuit that provides a nearly When a zener diode operates in the breakdown region, it does not burn rapidly. Zener Diode characteristics: VI characteristics of Zener Diode. block of Figure 1. Voltage – Current characteristics of semiconductor diode The principal schematic of circuit connection is illustrated below in the Figure 2. • To study the concept of By connecting the negative terminal of the battery to the diode anode terminal, zener diode starts operating in the reverse bias or breakdown mode. List of Accessories 19 . The symbol of zener diode is similar to the normal p-n junction diode, but with bend edges on the vertical bar. /Producer (pdfFactory Pro 2.21 \(Windows XP\)) To calculate % load regulation APPARATUS: Zener diode, Resistors, Power supply, Multi meter CIRCUIT DIAGRAM: THEORY: Zener diode is a P-N junction diode specially designed to operate in … The characteristics of a regular junction diode will show that it is designed primarily for operation in the forward direction. >> Why the series resistor in the zener … /im1 7 0 R endobj Find Zener Breakdown Voltage in Reverse Biased conditions. A graph of current through vs the voltage across the device is called the characteristic of Zener diode.The first quadrant is the forward biased region. Half wave rectifier circuit diagram Obtained data (all tables with measured values, observed graphs and data, calculations): All the tasks were conducted only with germanium diode. >> Plot the reverse characteristic curve by taking reverse voltage along –ve X-axis and reverse current along –ve Y-axis. References: • EE 121 Handouts 5 0 obj APPLICATIONS OF … A Zener diode not only allows current to flow from anode to cathode but also, in the reverse direction on reaching the Zener voltage. In the voltage regulator the zener-diode operates in the breakdown region, which ensures approximately constant voltage across it. endobj We use Zener diodes for voltage regulation and voltage stabilisation. ... One good use of the Zener diode's sensitivity to temperature change is to apply the device as a temperature sensor device as shown in the following diagram. Zener diode IZ5.6V, variable dc … ... 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