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. The device was named after Clarence … They provide a low-cost and no frill method for voltage regulation. Placing the zener diode in parallel with the load as shown … The VI characteristics of a zener diode … Figure 2 shows the current versus voltage curve for a Zener diode. /Producer (pdfFactory Pro 2.21 \(Windows XP\)) The experiment is continued till the milliammeter shows a large deflection while the voltmeter reading remains a constant, indicating the break down voltage. Compute Vin(max) for the circuit ? 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. >> The layer at the junction of ‘P’ type and ‘N’ type. /ProcSet [/PDF/Text/ImageC] To plot Volt-Ampere characteristics of Zener diode. 2 Apparatus required a)A Zener diode b)A DC voltage supplier c)Bread board d)100Ω … 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. The Zener diode mainly operates in reverse biased condition. It also permits the current to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage. In ‘on’ state, the voltage across zener diode remains constant until the voltage across it deops less than VZ. Zener diode is a silicon semiconductor with a p-n junction that is specifically designed to work in the reverse biased condition. x��Ymo��n ��� /Width 554 This property of zener diode makes its use as a voltage regulator. Application of Zener diode: Zener diode as voltage regulator. We will then plot it to get the depen-dence. To study zener diode as voltage regulator 2. Physics LAB SUBJECT CODE: BT 2001 NAME OF DEPARTMENT: Engg.Physic Page 1 of 6 EXPERIMENT: ENERGY … • 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. Objectives: • To study the I-V characteristics of a Zener diode. However, the Zener Diode or Breakdown Diode, as they are sometimes referred too, are basically the same as the standard PN junction diode but they are specially designed to have a low and specified Reverse Breakdown Voltage which takes advantage of any reverse voltage applied to it. To calculate static and dynamic resistances of the Zener diode in both forward and reverse biased conditions (before, after break down voltages). 2. LIST OF EXPERIMENTS 1. 4. Apparatus used: Zener diode, voltmeter (0-2volt), voltmeter (0-30 volt), mili-ammeter, micro- ammeter, variable source (0-2 volt and 0-30 volt). >> 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. Zener diodes are heavily doped than ordinary diodes. Properties of junctions Zener diode characteristics. stream Plot the reverse characteristic curve by taking reverse voltage along –ve X-axis and reverse current along –ve Y-axis. Calculate static and dynamic resistance of the Zener diode in both forward and reverse biased conditions (before, after break down voltages). 4 I. NAME OF LABORATORY: Engg. The Zener diode specially made to have a reverse voltage breakdown at a specific voltage. 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 5. View Exp 4 - Zener Diode.pdf from ECON 200 at Colegio de Dagupan. %PDF-1.5 To calculate % line regulation 3. i�8�íb:N�BHэ6^�.λ1��e72���Øueq�4��َb�ګy 1 V-I characteristic of Zener Diode Object: To draw the V-I characteristic of Zener diode and to determine Zener breakdown voltage. This article covers the Zener diode definition, working principle, characteristics, and applications. However, when reverse biased voltage is applied to the zener diode, it works in %���� /ColorSpace /DeviceRGB Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. /Filter /FlateDecode << Heavy doping alters the reverse characteristics. AB01 Scientech Technologies Pvt. 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. Here the Zener diode acts like an ordinary diode.When a forward voltage is applied, current flows through it. 3 Course Outcomes 1. Why the series resistor in the zener … To construct a Zener voltage regulator and experimentally determine the range over which the Zener maintains a constant output voltage. An ability to verify the working of different diodes, transistors, CRO probes ... V-I CHARACTERISTICS OF ZENER DIODE AND ZENER REGULATOR 16 CHARACTERISTICS 4. /Title (AB01.doc) characteristics of Different Diodes, BJT and FET Transistors, amplifiers and compensation techniques of transistors. The critical parameter of this type of diodes is the Zener breakdown voltage. Jrd . Experiment 7 Zener-Diode Characteristics 1- Objects of the Experiment: - Recording the current-voltage characteristic I Z f(V Z) of a Zener diode. To construct a zener voltage regulator and experimentally determine the range over which the zener maintains a constant output voltage. VI characteristics of zener diode. Zener diode is a silicon semiconductor with a p-n junction that is specifically designed to work in the reverse biased condition. << Its characteristics are otherwise very similar to common diodes. The above diagram shows the V-I characteristics of the 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 Zener Diode Definition Zener Diode Working Zener Diode Circuit Symbol VI Characteristics of Zener Diode Zener Diode Applications FAQs. AIM. /Type /XObject The V-I characteristics of the diode are curve between voltage across the diode and current through the diode. 2. 2. When forward biased voltage is applied to the zener diode, it works like a normal diode. << 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. /BitsPerComponent 8 Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. 1. Applications of PN junction diode: Half & Full wave rectifier- Measurement of Vrms, Vdc, and ripple factor. When a zener diode operates in the breakdown region, it does not burn rapidly. NK�%D��ᙽ�����n���N��2 ��1Vp��@׾Km�.������࢝cUݚ�2ZY�D�*�M��-�'��U�M��l���h��S�Ce�U� x�jJ ��!q>g�R 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). But for simplicity, both types are called Zener Diodes. 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. To find Zener break down voltage in reverse biased condition. We use Zener diodes for voltage regulation and voltage stabilisation. Let us learn about this exciting and unique kind of diode. /MediaBox [0 0 612 792] The zener diode is a semiconductor device unique in its mode of operation and completely unreplaceable by any other electronic device. Ideally, a diode is a device that allows current to flow in one direction only. • To study the concept of Due to heavily doped, its Warranty 19 5. 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. /Annots 11 0 R The figure below shows the characteristic curve of a 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. To study and measure the effects of forward and reverse bias on the zener diode current. 3. To study zener diode as voltage regulator 2. P-N Junction Diode Characteristics Part A: Germanium Diode (Forward bias & Reverse bias) Part B: Silicon Diode (Forward bias only) 2. Here V z is the Zener 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. 1 0 obj Because of its unusual properties it fills a long-standing need in electronic circuitry. To plot Volt-Ampere characteristics of Zener diode. The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse … /Font 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 6 0 obj /Name /im1 [�ڞ��ۛ��y->� �ꅏ�2e���r� L�h|BF�S� CZ�7g���ɦ��IN�&Z)\��FЈL,�+rM��?�,zX�څ�n�0����#���c} ��N��MD�}Q w\�0� It is acting as normal diode while forward biasing. The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. 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 A Zener diode is a special type of diode designed to reliably allow current to flow "backwards" when a certain set reverse voltage, known as the Zener voltage, is reached.. Zener diodes are manufactured with a great variety of Zener voltages and some are even variable. 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. It has a particular voltage … Ltd. 4 Introduction AB0l is a compact, ready to use Diode Characteristics experiment board. 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 … >> The symbol of zener diode is similar to the normal p-n junction diode, but with bend edges on the vertical bar. /Length 8 0 R 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 … This ... As mentioned earlier, the characteristics of the zener diode make it ideal for application as a voltage regulator. The zener diode goes through a number of different regions or stages, of which are explained below. List of Accessories 19 . Theory: Zener Diode: Zener diode is a heavily doped PN junction diode. The V-I characteristic of Zener diode indicates that characteristic of Zener diode in forward bias is same as PN junction diode. Objective: To study and verify the functionalityof Zener diode in forward bias and reverse bias and to Plot Volt-Ampere Characteristics of Zener Diode. VI Characteristics of Zener Diode. characteristics of a typical Zener diode. Zener diode IZ5.6V, variable dc … / Zener Diode Circuits, Characteristics, Calculations. 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. 4 I. 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Thiyab Zener diode characteristics 1 Experiment #5 Object To study and measure the effects of forward and reverse bias on the Zener diode current. A Zener diode not only allows current to flow from anode to cathode but also, in the reverse direction on reaching the Zener voltage. 4. endobj The zener regulator is composed of resistor R1 and zener diode CR1• The resistor characteristics … /Parent 3 0 R Describe the characteristics in your own words. /XObject 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. Diodes . block of Figure 1. EXPERIMENT: DIODE & ZENER DIODE Objective:- To study the forward and reverse bias characteristics of diode and zener diode. 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. 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