zener diode characteristics experiment pdf

Objectives: • Obtain the I-V curves of a signal diode and a zener diode • Compare the performance of different rectifier circuits . To study and measure the effects of forward and reverse bias on the zener diode current. >> (Zener Diode V-I Characteristics) When the applied voltage exceeds an specific amount Zener breakdown takes place. This property of zener diode makes its use as a voltage regulator. 3. 3 Course Outcomes 1. %PDF-1.5 6. 3. >> Choose Load Resistance in such a manner, such that the Zener diode is 'on'. Graphical measurement of forward and reverse resistance. A Zener diode is a heavily doped silicon crystal diode which allows current to flow in the forward direction in the same manner as an ideal diode. To draw the characteristic curve of a Zener diode and to determine its reverse breakdown voltage. • Forward and reverse characteristics experiment can be performed on this trainer kit • Silicon, Germanium, Zener and Light Emitting Diode (LED) are provided with this system • Inbuilt Ammeter and Voltmeter are provided • Digital display for displaying voltage and current • Different test points are provided • Online product tutorial Features Nvis Technologies Pvt. when the voltage across the zener diode exceeds its zener voltage rating VZ). 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 diodes will also allow current to flow in the reverse direction when the voltage is above a certain value. endobj Fig 2:Zener diode characteristic curve The forward bias region of a Zener diode is identical to that of a regular diode. /Filter /DCTDecode ��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�� Eletronics Lab Report - Zener Diodes - Free download as PDF File (.pdf), Text File (.txt) or read online for free. ��V��(A��a+�i����yO��%/�!G�Q���J�*�{�c�pd?�ߐ���0�,0q�-�Y]�o�����k��_�G#��C�.%&�x:�IB���0���B΀ i�!5����xX���?�_�������7��aD�Z���:Σ~�� �5n��o�_��&�f���a�!�X �_c/�! ZENER DIODE Experiment No. Jrd . EGR220 Than & Bhavin Lab #1 Introduction and Objectives Although, nowadays, Zener Diodes are becoming less popular and virtually replaced with specially designed IC (integrated circuits), they are simple and useful. 1W D0-41 Glass Zener Diode 1N4740A, Zener voltage is 10 V. Vary the Load Resistance (R L). 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 … >> In reverse bias, a negligible constant current flow through the zener diode but the current becomes abruptly large at certain voltage. Voltmeter is placed parallel to load resistor and ammeter series with the series resistor. /Type /XObject /Resources 7 0 obj 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. Observe the nearly constant voltage in the breakdown region. 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. By connecting the negative terminal of the battery to the diode anode terminal, zener diode starts operating in the reverse bias or breakdown mode. 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. EXPERIMENT-1 AIM: 1. The break down voltage Vz is obtained from the graph as shown below. To draw the characteristic curve of a zener diode and to determine its reverse break down voltage. The V-I characteristics of the diode are curve between voltage across the diode and current through the diode. Give reason 5. The Zener diode mainly operates in reverse biased condition. LIST OF EXPERIMENTS 1. %���� Apparatus A Zener diode (with small reverse breakdown voltage of about 6 volts), [i.e., V z = 6 V], a ten volt battery, a high resistance rheostat, two 0-10 V voltmeter, one 0-100 mA ammeter, one 20 Ω. resistance, one way key, connecting wires. 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 Experiment No. /BitsPerComponent 8 /Creator (pdfFactory Pro www.pdffactory.com) 3.1 Diode Characteristics Small-Signal Diodes Diode: a semiconductor device, which conduct the current in one direction only. /Annots 11 0 R View Exp 4 - Zener Diode.pdf from ECON 200 at Colegio de Dagupan. >> To draw the voltage-current (V-I) characteristic curves of a Zener diode and to determine its knee voltage, forward resistance and reverse breakdown voltage. Rectifiers (without and with c-filter) Part A: Half-wave Rectifier In the voltage regulator the zener-diode operates in the breakdown region, which ensures approximately constant voltage across it. stream 3. 3. [�ڞ��ۛ��y->� �ꅏ�2e���r� L�h|BF�S� CZ�7g���ɦ��IN�&Z)\��FЈL,�+rM��?�,zX�څ�n�0����#���c} ��N��MD�}Q w\�0� Zener Diode Circuits, Characteristics, Calculations. 4 0 obj <>stream Due to heavily doped, its /Width 554 Apparatus:-Experimental kit and patch cords. >> We will then plot it to get the depen-dence. How to make an Arizona penny can alcohol stove - Duration: 19:40. 3 0 obj <> endobj /Title (AB01.doc) The above diagram shows the V-I characteristics of the Zener diode. �@h�M��ǹ�lҍwQt�>�Y'+ �S[����ΐ�,J�Ģ�E[��_����?�_���,v�_~!�Wr�:�ͯa�&����f�\$�TS �2��R�z;�%��z6��^�2�\$wq��� ~��-!����d���l K�2�a�S����/(,#PSէ�/kk���\%T��^YA3��.o��XE��\Ga�{���]�W��s����%�Y�s�\$�������s��D A��i��[_�/we�{��1J0g�jWp��-)�=���dTd'-o�s��9�K���h`�g�f�\$�@��m��`���e�s�r�w��׼����l W4O�PTx�L��߻��I����6��O�q+� p�!p�*� �1����p��X�E(]-? /Type /Page << 4. 11:31. But for simplicity, both types are called Zener Diodes. Can we operate normal PN junction diode in breakdown region for lon ger duration? Zener diodes are a special kind of diode which permits current to flow in the forward direction. NK�%D��ᙽ�����n���N��2 ��1Vp��@׾Km�.������࢝cUݚ�2ZY�D�*�M��-�'��U�M��l���h��S�Ce�U� x�jJ ��!q>g�R Zener Diode Definition Zener Diode Working Zener Diode Circuit Symbol VI Characteristics of Zener Diode Zener Diode Applications FAQs. P-N Junction Diode Characteristics Part A: Germanium Diode (Forward bias & Reverse bias) Part B: Silicon Diode (Forward bias only) 2. << Compute Vin(max) for the circuit ? 2 0 obj <> endobj A Zener diode not only allows current to flow from anode to cathode but also, in the reverse direction on reaching the Zener voltage. 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. APPLICATIONS OF … endobj /Subtype /Image k�u�n��!�����h5�t8Z6}���7[�a����\$�U!e%a,�S�ń�T��/�u�M��l�+�߿����uE�d��+8m:�~�*aR��v�7IZ��[�'hK`�g��'�a�]s^��OZOXC Experiment No. To find Zener break down voltage in reverse biased condition. Ideally, a diode is a device that allows current to flow in one direction only. Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. This breakdown voltage is known as the Zener voltage. The symbol of zener diode is similar to the normal p-n junction diode, but with bend edges on the vertical bar. When forward biased voltage is applied to the zener diode, it works like a normal diode. This voltage is called as zener voltage. /Filter /FlateDecode AB01 Scientech Technologies Pvt. There Are Many Symbols You Should Know Before Using How To Test The Voltage Of Zener Diode Without Variable Dc Power Supply How To Test A Stud Diode Using A Standard Digital Multimeter A digital multimeter with a diode test function can be used to test leds of various colors if the dmm applies a sufficient voltage … /ProcSet [/PDF/Text/ImageC] Diode Characteristics 2012 SUMMARY This experiment was set up to investigate the different properties and characteristics of several different types of diode. The reverse breakdown of a PN- junction may occur either due to Zener effect or avalanche effect. Here the Zener diode acts like an ordinary diode.When a forward voltage is applied, current flows through it. It also permits the current to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage. 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. /Length 5 0 R Let us learn about this exciting and unique kind of diode. << List of Accessories 19 . characteristics of a typical Zener diode. VI characteristics of zener diode. But due to higher doping concentration, higher current flows through the Zener diode. We operate a Zener diode in reverse biased conditions, and this diode does not get damaged even when the voltage across this exceeds the reverse breakdown voltage. The zener diode goes through a number of different regions or stages, of which are explained below. 5 0 obj 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. 3 Theory of experiment The diode is a device formed from a junction of n-type and p-type semiconductor material. Its characteristics are otherwise very similar to common diodes. ���� JFIF �� C You tube channel hari cvmAIMTo plot V-I graphplease subscribe you tube channel hari cvm for remaining videos : 5 Lab. /F2 10 0 R Placing the zener diode in parallel with the load as shown … All the initial answers to the questions of the assignment (i.e. - Determining the quiescent point Q(VZ,IZ) - Determining the differential resistance of a Zener diode. 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." 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? References: • EE 121 Handouts Exploiting this characteristic of Zener diodes allows for simple, inexpensive voltage regulators. It is acting as normal diode while forward biasing. 5. The device was named after Clarence … With the sufficiently applied reverse voltage, p-n junction experience a rapid avalanche breakdown and starts conduct … 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. EXPERIMENT NUMBER 4 ... characteristics of diodes and the use of diodes in rectifier and limiter 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. 2 Apparatus required a)A Zener diode b)A DC voltage supplier c)Bread board d)100Ω … Objectives: • To study the I-V characteristics of a Zener diode. Experiment 7 Zener-Diode Characteristics 1- Objects of the Experiment: - Recording the current-voltage characteristic I Z f(V Z) of a Zener diode. An ability to verify the working of different diodes, transistors, CRO probes ... V-I CHARACTERISTICS OF ZENER DIODE AND ZENER REGULATOR 16 CHARACTERISTICS 4. /MediaBox [0 0 612 792] Applications of PN junction diode: Half & Full wave rectifier- Measurement of Vrms, Vdc, and ripple factor. Part I : VI Characteristics of zener diodes . )�uq4f�֧�i�| u�y��W�^. What is the breakdown voltage of Zener diode used in your practical? EXPERIMENT: DIODE & ZENER DIODE Objective:- To study the forward and reverse bias characteristics of diode and zener diode. EXPERIMENT-1 AIM: 1. 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. Heavy doping alters the reverse characteristics. /Height 123 Objectives: • To study the I-V characteristics of a Zener diode. To study zener diode as voltage regulator 2. Diode Applications Experiment 5. << The Zener diode is a particular type of diode that solves this problem. H��WKo1������c����M+Uj���4(iJi���]�_3����ewlό��f�h^LO9ᜊ�̯ Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. Therefore, the circuit current is zero. View Exp 4 - Zener Diode.pdf from ECON 200 at Colegio de Dagupan. 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. Application of Zener diode: Zener diode as voltage regulator. Calculate static and dynamic resistance of the Zener diode in both forward and reverse biased conditions (before, after break down voltages). VI Characteristics of Zener Diode. Because of its unusual properties it fills a long-standing need in electronic circuitry. ��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��\$��, We use Zener diodes for voltage regulation and voltage stabilisation. %PDF-1.2 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 … Ltd. Figure A-3 shows typical characteristics of a real diode. a�d\$B)�5�ꇿ���S�t�nC��U�AӴ�l-�-��ù�=�f��HK�l�c���,���yh !����3��vv_�Nd�H�>�M����/Q4��endstream View Lab 4- Zener Diodes Characteristics and Applications.pdf from ELECTRONIC EEEB 373 at Tenaga National University, Kajang. ... 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 … Zener Diode Characteristics Part A: V-I Characteristics Part B: Zener Diode act as a Voltage Regulator 3. 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. Why the series resistor in the zener … /Author (rjain) The layer at the junction of ‘P’ type and ‘N’ type. Physics Practical Experiment | Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail | ... VOLTAGE-CURRENT CHARACTERISTICS OF A ZENER DIODE . Zener diode is a silicon semiconductor with a p-n junction that is specifically designed to work in the reverse biased condition. Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. 4 I. Zener Diode Applications Chapter 3 * * * * * Overview Zener Diodes Zener characteristics Zener Diodes Diode types Rectifier Zener Lower Vz due to more heavily ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 41994d-MDE5Y Zener Diode Characteristics - Zener regulator Prelab: You are tasked to determine experimentally the characteristic curve of a reverse-biased Zener diode. /XObject The typical forward voltage at room temperature with a current of around 1 mA is around 0.6 volts. characteristics of Different Diodes, BJT and FET Transistors, amplifiers and compensation techniques of transistors. The performance of the full-wave rectifier will be studied and measured as well as that of the ",#(7),01444'9=82. To study zener diode as voltage regulator 2. i�8�íb:N�BHэ6^�.λ1��e72���Øueq�4��َb�ګy 1 0 obj 2. 3.3v zener diode voltage regulator Analog electronics basic zener diode voltage regulator designing a zener diode voltage regulator Electronic Basics how does a zener diode voltage regulator work Indication of faulty or wrong zener make zener diode voltage regulator Open zener diode with no load Troubleshooting Zener Diode Voltage Regulator voltage regulator vs zener diode why is zener … The experiment is continued till the milliammeter shows a large deflection while the voltmeter reading remains a constant, indicating the break down voltage. Zener Diode - Load Regulation; Set DC voltage. Here V z is the Zener breakdown voltage. / Zener Diode Circuits, Characteristics, Calculations. << To calculate % line regulation 3. 2. 1. the prelab corrected and This ... As mentioned earlier, the characteristics of the zener diode make it ideal for application as a voltage regulator. 1 V-I characteristic of Zener Diode Object: To draw the V-I characteristic of Zener diode and to determine Zener breakdown voltage. To construct a zener voltage regulator and experimentally determine the range over which the zener maintains a constant output voltage. 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. This post includes explanation of operation of Zener diode and V-I Characteristics of Zener Diode. To plot Volt-Ampere characteristics of Zener diode. block of Figure 1. 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. Zener diodes are heavily doped than ordinary diodes. /Length 8 0 R Ltd. 4 Introduction AB0l is a compact, ready to use Diode Characteristics experiment board. Figure 2 shows the current versus voltage curve for a Zener diode. 0�L��������Ҳ��dq��72Yus��`׼|�\�ڝ��� y�#���Q#ڈ�9�����+X �q\�,��g��� =��]? The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. There are several drawbacks, however, that will be discussed shortly. KK TALKS ABOUT 21,294 views. /Contents 4 0 R 2. AIM. /Name /im1 stream 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. endobj The critical parameter of this type of diodes is the Zener breakdown voltage. /Font x��Ymo��n ��� 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. 4 I. In ‘on’ state, the voltage across zener diode remains constant until the voltage across it deops less than VZ. Describe the characteristics in your own words. /Producer (pdfFactory Pro 2.21 \(Windows XP\)) Some of which are mentioned below: 1) Zener diode 2) P-N junction diode 3) Tunnel diode 6 4) Varractor diode 5) Schottky diode 6) Photo diode 7) PIN diode 8) Laser diode 9) Avalanche diode 10) Light emitting diode 7.0.CONCLUSION In this experiment, the main objectives was fulfilled i.e. To construct a Zener voltage regulator and experimentally determine the range over which the Zener maintains a constant output voltage. Zener Diode 62 4 < 125 < 2000 < 5 47.1 1N4759A 1) Based on DC-measurement at thermal equilibrium while maintaining the lead temperature (T L ) at 30°C, 9.5mm (3/8 inches) from the diode body. This article covers the Zener diode definition, working principle, characteristics, and applications. The figure below shows the characteristic curve of a zener diode: VI characteristics of a zener diode is shown in the below figure. ... Each work group will submit a report due one week after the laboratory experiment which should include the following sections: 1. The zener regulator is composed of resistor R1 and zener diode CR1• The resistor characteristics … • To study the concept of Theory:-A Semiconductor diode is prepared by joining P and N sections of a ... diode2.pdf . Warranty 19 5. This is useful for students to plot V-I characteristics of Si Diode, Zener Diode, and light Emitting Diode in forward as well … When external voltage is zero, circuit is open and the potential barrier does not allow the current to flow. Set the Series Resistance (R S) value. As the breakdown voltage is appro… Physics LAB SUBJECT CODE: BT 2001 NAME OF DEPARTMENT: Engg.Physic Page 1 of 6 EXPERIMENT: ENERGY … Study of V-I characteristics of Zener diode • Experiment 3 16 Study of V-I characteristics of Light Emitting Diode (LED) 4. Experiment No: 1 Diode Characteristics Objective: To study and verify the functionality of a) PN junction diode in forward bias b) Point-Contact diode in reverse bias Components/ Equipments Required: Components Equipments ... Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. Last Updated on December 18, 2020 by Swagatam 11 Comments. Experiment no. /F1 9 0 R For Zener diodes, silicon is preferred to Ge because of its high temperature and current capability. Plot the reverse characteristic curve by taking reverse voltage along –ve X-axis and reverse current along –ve Y-axis. 1 0 obj <>>>/Group 216 0 R>> endobj << In breakdown the voltage across the Zener diode is close to constant over a wide range of currents thus making it useful as a shunt voltage regulator. To calculate static and dynamic resistances of the Zener diode in both forward and reverse biased conditions (before, after break down voltages). The zener diode is a semiconductor device unique in its mode of operation and completely unreplaceable by any other electronic device. The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse … /ColorSpace /DeviceRGB 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 To plot Volt-Ampere characteristics of Zener diode. It has a particular voltage known as … Apparatus used: Zener diode, voltmeter (0-2volt), voltmeter (0-30 volt), mili-ammeter, micro- ammeter, variable source (0-2 volt and 0-30 volt). However, the reason for this is some external circuit is required in order to protect the device from the excess current. >> 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. Zener Diode characteristics: VI characteristics of Zener Diode. << Two terminals: anode and cathode. 993 Section B9: Zener Diodes When we first talked about practical diodes, it was mentioned that a parameter associated with the diode in the reverse bias region was the breakdown voltage, V BR, also known as the peak-inverse voltage (PIV). Zener diode IZ5.6V, variable dc … to obtain the IV characteristics of P- N Junction diode for Forward Bias circuit. Experiment 8 . 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The initial answers to the questions of the assignment ( i.e reverse characteristic curve by taking reverse voltage breakdown a. - Load regulation ; set DC voltage voltage at room temperature with a current of around mA... December 18, 2020 by Swagatam 11 Comments voltage across it deops less than VZ several drawbacks, however that... 1W D0-41 Glass Zener diode can be set by controlling the doping level signal and. Unusual properties it fills a long-standing need in electronic circuitry is identical to that of Zener! Current capability preferred to Ge because of its high temperature and current capability make ideal. Series Resistance ( R S ) value Zener break down voltage in reverse bias, a diode is 'on.. Zener effect or avalanche effect of a Zener diode Definition, Working principle, characteristics, Half,., 2020 by Swagatam 11 Comments diode Definition, Working principle, characteristics, and ripple factor conduct the in! 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