REPORT Your report should include in addition to the theory, the following: 1. 4 FULL-WAVE RECTIFICATION 9. 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. Here, even a schottky diode can be used but the problem is in schottky diodes the breakdown voltage is less than the reverse voltage at which current flows. An experiment is performed to determine the $I - V$ characteristics of a Zener diode,which has a protective resistance of $R=100 \Omega$, and a maximum power of. Zener diode characteristics and Zener diode as Voltage regulator. AB0l is a compact, ready to use Diode Characteristics experiment board. It is acting as normal diode while forward biasing. The minimum and maximum input voltages that can be regulated by the Zener diode are 7. The purpose of this activity is to investigate the current vs. pepperl-fuchs. To Study Forward &Reverse VI Characteristics of Zener Diode. The Zener Diode is used in its “reverse bias” or reverse breakdown mode, i. When a reverse bias is applied, a small reverse saturation current appears. Reverse the direction of the Zener diode and repeat this step. DIODE I-V CURVE In this section, you will get all the data points necessary to draw the full I-V curve for a diode. There are various types of diodes. The impedance matching and current amplifying characteristics of the emitter follower provide buffering for the zener and draw less current from it. Experiment #8: FET. Diodes do consume some amount of power when conducting forward current, and they won't block out all reverse current. From the I-V Characteristics curve we can study that the zener diode has a region in its reverse bias characteristics of almost a constant negative voltage regardless of the value of the current flowing through the diode and remains nearly constant even with large changes in current as long as the zener diodes current remains between the breakdown. ” The elements in the box (1 kΩ resistor and the Zener diode) form the regulator circuit. Your data will be the graphical images on the display of the scope. Zener Diode Characteristics The zener diode has the unique property of maintaining a desired reverse biased voltage. What is a semi conductor? Why it does not obey ohms law ? 2. Rectifier diode – semiconductor diode designed for rectifying alternating current (mostly with low power frequency – 50 Hz at high power emitted during load). Exp-6 To study unregulated and regulated power supply. 5 volts, but had no zener diodes to work with. EXPERIMENT 2 ZENER DIODES 2. Zener diode: see diode diode, two-terminal electronic device that permits current flow predominantly in only one direction. Plot reverse bias characteristic of the Zener diode and determine the Zener breakdown voltage. A diode is forward biased if the P-type pin is connected with the anode of a voltage source and N-type of the diode is connected with the cathode of the source. Diode characteristics products are most popular in Western Europe, Eastern Asia, and North America. characteristics of zener diode 3. 1 AIM (a) To study the current – voltage characteristics of (i) Normal diode and (ii) Zener diode. Notes on Experiment #5 This week we will do experiment 5 AS IS. 1 Diode equation 1. voltage characteristics of various solid state PN junction diodes such as the conventional Si diode, the Schottky barrier diode, the Zener diode and Light emitting diode (LED). 2) Determine the saturation current, non-ideality factor, breakdown voltage and series resistance of the diode from its I-V characteristics. 12 volt - 5-Watt zener diode 8. Safety cannot be guaranteed if they are handled incor-rectly or carelessly. Zener Diode Characteristics Apparatus 86. The complete v-i characteristics of zener diode is as shown in figure. Re: DIODE IV CHARATERISTICS. It can be used as stand alone unit with external DC power supply or can be used with. Measurement of a zener diode P7. # Characteristics of a Zener Diode The above diagram shows the V-I characteristics of the Zener diode behavior. You will make I-V curves for each and will see how a diode can be used as a voltage rectifier. A Zener diode is a type of diode that allows current to flow not only from its anode to its cathode, but also in the reverse direction, when the voltage across its terminals exceeds the Zener voltage, a characteristic of the device. More specifically you will learn, 1. characteristics of zener diode 3. To analyze and understand the v - i characteristic of the zener diode, 2. Forward Bias Reverse Bias Biasing the Diode : Biasing the Diode : Forward and Reverse Bias Forward and Reverse Bias. When a reverse bias is applied, a small reverse saturation current appears. voltage that depends on its type and characteristics. 2 k and 1 - 1 k resistors 6. PN Junction diode characteristics. Solid-State Electronics Vol. DIODE CHARACTERISTICS AND CIRCUITS 2 2. There is a special kind of diode called a zener diode that acts like a regular diode when the voltage across it is positive. Use the diode equation for that state to solve the circuit equations and find i D and v D 3. Diode limiters are waveshaping circuits in that they are used to prevent signal voltage from going above or below certain levels. The four circuits shown below are diode-resistor and diode-capacitor combinations that demonstrate clipping, rectification, level shifting and filtering. V-I Characteristics 2. Once the reverse bias voltage becomes more than the Zener breakdown voltage, a significant amount of current starts flowing through the diode due to Zener breakdown. (b) Current-voltage characteristics of an ideal diode. When the reverse bias voltage is greater than a predetermined voltage then the Zener breakdown voltage occurs. To study the voltage regulation in Zener diode regulation circuit. 1 Objective In this experiment you will learn the basic usage of zener diode. 2 Equipment List 1. and Cahill R. Increase V BB and note the forward bias characteristic of the diode. Please subscribe to Electronics Post Channel if you like my tutorials. 1-8 2 Zener Diode Characteristics and Zener as Voltage Regulator 9-16. Effect of various alloying elements such as – Chrom ium, nickel, manganese, molybdenum, tungsten, vanadium. Series and parallel LCR Circuits (Determination of resonant frequency and quality factor) 3. 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. We try to see the Voltage-Current realtion in Diodes by applying a voltage across it and measuring the corressponding current flowing through it. Increase V BB and note the forward bias characteristic of the diode. The Schottky Diode. of ECE CREC 9 2. Analysis of DC Resistive Circuits. Lab I: Further Adventures in LTSpice Abstract This laboratory report consists of five experiments conducted by the TA for an introductory course on semiconductor devices. High current through the diode can permanently damage the device to avoid high current, we connect a resistor in series with zener diode. A SHUNT REGULATOR consists of two components: A resistor (called the current limiting resistor) and a zener diode. What is a semiconductor ? Ans. V-I Characteristics 2. 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. Using a Digital Multimeter. So this right here is the diode equation, that's the diode IV equation. ZENER DIODE. V-I Characteristics stands for voltage and current. (determination of knee voltage, zener voltage and forward resistance) 4. Also you can. 5 V and a 5% tolerance. Most diodes are semiconductor devices; diode electron tubes are now used only for a few specialized applications. In this lab students will examine a diode's main characteristics and functions, as well as some of its notable uses in the real world. Ideal Diode and Real Diode A diode is said to be an Ideal Diode when it is forward biased and acts like a perfect conductor, with zero voltage across it. Obtain the traces for the diode voltage and current and store them in the data. Exp-3 Study of Rectifier Diode & applications. Diode clamping circuit simply consists of a diode D and capacitor C as shown in below Figure. (2) Zener Diode. To study the voltage regulation in Zener diode regulation circuit. Once the diode starts conducting it maintains almost constant voltage across the terminals whatever may be the current through it, i. THEORY: The regulated power supply is a combination of three circuits, the bridge rectifier, the capacitor filter and zener diode voltage Regulator. 7 V for silicon. REVISION December PRE BOARDS January PRACTICE TEST Theory Paper 70 Marks + Practical Work 30 Marks. In the case of normal diodes the diode damages at the break down voltage. chapter 39: experiment - to draw the characteristics of a ZENER DIODE AND TO DETERMINE ITS REVERSE BREAKDOWN VOLTAGE. MASTER HANDBOOK. Energy bands in conductors, semiconductors and insulators (qualitative ideas only) Semiconductor diode - I-V characteristics in forward and reverse bias, diode as a rectifier; Special purpose p-n junction diodes: LED, photodiode, solar cell and Zener diode and their characteristics,. Experiment #7: Transistor Characteristics and application. The Microsoft Outlook 2010 Messaging API (MAPI) Reference provides the messaging architecture for Microsoft Outlook 2010 July 2009 Technical Preview:The Microsoft Outlook 2010 Messaging API (MAPI) Reference provides the messaging architecture for Microsoft Outlook 2010. The current near VD is very. The symbol of zener diode is similar to the normal p-n junction diode, but with bend edges on the vertical bar. It is acting as normal diode while forward biasing. Zener Regulator Design (Lab HW) What is the special characteristic of Zener Diode compare to other diodes that makes it very useful in the design of voltage regulators. Half Wave and Full Wave Rectifier 12. 7 V for Silicon diodes. Voltage source or bias connections are + to the p material and – to the n material Bias must be greater than. The Diode block also contains a series Rs-Cs snubber circuit that can be connected in parallel with the diode device (between nodes A and K). There are 81 diode characteristics suppliers, mainly located in Asia. The cathode line is extended to resemble an S. There is a special kind of diode called a zener diode that acts like a regular diode when the voltage across it is positive. A rugged, glass-enclosed, hermetically sealed structure. Experiment #6: Zener Diode. 22u capacitor (x 1) 5. Below that, the Zener diode becomes forward biased and the voltage across it levels around -0. Saurav Kumar 133,225 views. LAB 2 Diode Characteristics 2. Measure currents at a few values of forward bias voltage to convince yourself that the diode performs as expected. current increases at a rapid rate. Connect a circuit, take the reading, fill the observation table and finally plot the graph. In use they are reverse biased. 1 from page 2. Also, plot the reverse characteristics of the Zener diode. diode (1) of semiconductor material (N) that is an improved version (A) of type 345. The dc voltage is obtained from a double regulated power supply and the sinusoidal voltage (with variable amplitude and frequency) is obtained from a signal generator. When the reverse bias voltage is greater than a predetermined voltage then the Zener breakdown voltage occurs. asc and plt files for parts 2 and 3. The parameter FC determines the diode potential assumed as a fraction (0 0 is the forward bias region, and V <0 is the reverse bias region. Zener Diode as Voltage Regulator TutorialBasic Electronics Tutorials. Breadboard 7. MOST LIKELY VIVA-VOCE QUESTIONS VTU physics lab I-V CHARACTERISTICS OF ZENER DIODE 1. 7[V] source, and that of the reverse-biased Zener with sufficient applied potential is a source of value -V Z. Experiment #4 – Diode Characteristics Universityof Illinoisat Chicago Spring201 5 Introduction Be sure to print a copy of Experiment #4 and bring it with you to lab. Ideal Diode and Real Diode A diode is said to be an Ideal Diode when it is forward biased and acts like a perfect conductor, with zero voltage across it. Carry out the recording for both forward and reversed bias characteristics. The zener diode then regulates that current to a fixed DC voltage, as determined by the diode's reverse-avalanche characteristics (or "zener" voltage). 3 V, compared to 0. The Zener diode. Energy Band Gap of PN Junction Diode 88. All well and good. Zener diode to limit the maximum output voltage that can. The voltage versus current characteristics of a silicon diode is shown in Figure 2. We will explore diodes ability to pass current in only one direction and to practically. Zener Diode Voltage Regulator Calculator Below is a simple to use zener diode voltage regulator calculator. At the end of this lab, the students should be able to compare the experimental data to the theoretical curve of the diodes. Run it at another current and it will have a different voltage drop. Assume diode is one state (either ON or OFF). 3- Filling all tables and answering all questions in the report. Zener Diodes have a sharp reverse breakdown voltage and breakdown voltage will be constant for a wide rang of currents. Make sure that you obtain a good reading of the Zener diode's breakdown voltage. Zener Diode 62 4 < 125 < 2000 < 5 47. 6 V, just like a regular diode. From the number of diodes used in the circuit the classification of rectifiers is done. The symbol for the Schottky diode differs slightly from the P-N junction diode symbol. Figure 1: (a) Diode symbol. Working principles and characteristics of common-emitter and common-collector amplifiers 4. Experiment 3 Nonlinear circuits: diodes and analog multipliers So far the analog circuits we have considered have all been linear, so that the output has been given by a sum of terms, each term strictly proportional to only one source value (see the section in Experiment 1: Linear circuits and superpositionon page 119- , and, in particular,. Using a vacuum tube (triode) as an audio amplifier; Using transformers in both step-down and step-up operation. Voltage source or bias connections are + to the p material and – to the n material Bias must be greater than. In order to fulfill the changing demands of our clients, we are offering Zener Diode Ch Apparatus (Characteristics Apparatus) Same as EC-365. Klystron 2K 25 was used for the experiment. Saurav Kumar 133,225 views. Calculation Do a curve fitting using the diode equation. To understand the operation of the Zener diode, remember that the forward biased model of the Zener diode is (approximately) a 0. tutorials we saw that simple diodes are made up from two pieces of semiconductor material, either silicon or germanium to form a simple PN-junction and we also learnt about their properties and characteristics. Half Wave and Full Wave Rectifier 12. Zener Diode Source : Concept electronics. In this case, the 1N4462 component has a Zener voltage (V Z) of 7. physics experiment 6 Experiment No. Introduction. Half Wave and Full Wave Rectifier 12. Your data will be the graphical images on the display of the scope. ” The elements in the box (1 kΩ resistor and the Zener diode) form the regulator circuit. lpt Oct 2011. Voltage Stabilization of Zener Diode (as a voltage regulator) 85. At the end of this lab, the students should be able to compare the experimental data to the theoretical curve of the diodes. INTRODUCTION The purpose of this lab is to measure the properties of a diode and a zener diode. EduPoint 269,354 views. 5mm (3/8 inches) from the diode body. DIODE I-V CURVE In this section, you will get all the data points necessary to draw the full I-V curve for a diode. A Zener diode acts like a regular diode, in that it lets current flow in only one direction, but it makes an exception. • Transistor output characteristics in fourth region Experiment Module - 8 • Examination of Zener diode • Examination of regular circuits with Zener diode, • Examination of parallel regular rectifier • Examination of serial regular rectifier • Examination of ideal serial regular rectifier Experiment Module - 9. pdf), Text File (. Construct the circuit shown in Figure 4 on the. A Zener diode is different; it is a silicon diode that the manufacturer has optimized for operation in the breakdown region. Theory: A diode, in electronics, is a two terminal electronic component with an asymmetric transfer characteristics, with low resistance to current flow in one direction and high resistance to current flow in the other direction. ”In theory. Figure 1: Diode Circuit Preliminary Calculations:. If your meter displays a voltage reading, the diode has failed. The circuit diagram to plot the VI characteristics of a zener diode is shown. Experiment 3 Nonlinear circuits: diodes and analog multipliers So far the analog circuits we have considered have all been linear, so that the output has been given by a sum of terms, each term strictly proportional to only one source value (see the section in Experiment 1: Linear circuits and superpositionon page 119- , and, in particular,. Transistor CE characteristics. Diodes do consume some amount of power when conducting forward current, and they won't block out all reverse current. FET Characteristics. pepperl-fuchs. The students use the Analog Discovery Module and WaveForms software to plot the I-V characteristics of the diodes. 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. Commonly available Zener diodes are available with breakdown voltages (“Zener voltages”) anywhere from 1. • The Basic Operation of a Diode. In zener diode, electric current flows from both anode to cathode and cathode to anode. It is used in voltage regulators. Experiment #4 – Diode Characteristics University of Illinois at Chicago Summer 2010 “STORE” should be visible in the upper left of the scope screen. The turn-on voltage is the where the curve abruptly changes direction. In this lab students will examine a diode's main characteristics and functions, as well as some of its notable uses in the real world. without affecting the Zener voltage. Zener diode to limit the maximum output voltage that can. Transient response Observe the diode recovery characteristics using circuit in Figure 1. Photodiode Characteristics 8 I-V CHARACTERISTICS The current-voltage characteristic of a photodiode with no incident light is similar to a rectifying diode. Plot the standard forward characteristics of a signal diode and Zener diode. jfet amplifier (common. In this exercise, you are to tabulate the regulating properties of the Zener diode. A voltage stabilizer is a combination of elements that are designed to ensure the output voltage of a supply fairly remains constant. 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. The vo tage drop across the Zener diode is equal to the Zener voltage of that diode no matter how high the reverse bias voltage is above the Zener voltage. ZENER DIODE. Saurav Kumar 133,225 views. Vanode > Vcathode. There are several drawbacks, however, that will be discussed shortly. ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) PART NUMBER ZENER VOLTAGE RANGE (1) TEST CURRENT REVERSE LEAKAGE DYNAMIC RESISTANCE f = 1 kHz SURGE CURRENT (3) REGULATOR (2). They are sorted out of the pile during production into bins, the voltage across it at a specified current being the only factor. Connect a circuit, take the reading, fill the observation table and finally plot the graph. 7V) the current increases drastically with respect to the increase in the voltage. 3- Filling all tables and answering all questions in the report. pepperl-fuchs. In general, the cathode of a diode is. These are the defining equations. 4 Zener diode Characteristics Object: To study and measure the effects of forward and reverse bias on the zener diode current. 5 V mA forward current reverse current reverse voltage forward voltage - + + - Diode is forward biased when Vanode > Vcathode. With your lab partner, brainstorm on the following ideas:. pdf), Text File (. The lab experiments are a combination of new and review material. Description. Zener Diode I-V Characteristics Curve. Also you can. → Zener Diode as Peak Clipper Zener diodes can be used to clip off the peak value of input wave form. Sorry, something has gone wrong. 5: Identification of Cathode When working with different types of diodes, it is also necessary to distinguish one end of the diode from the other (anode from cathode). Construct the circuit as shown in figure for reverse biased zener diode. These studies reveal the excellent performance of this power supply when put into use within a system. Are you sure you want to delete this answer? Yes No. Energy bands in conductors, semiconductors and insulators (qualitative ideas only) Semiconductor diode - I-V characteristics in forward and reverse bias, diode as a rectifier; Special purpose p-n junction diodes: LED, photodiode, solar cell and Zener diode and their characteristics,. 6 6-How would be the forward characteristics if zener diode was in forward bias? Show the forward characteristics in figure 13. Make a preliminary graph in the laboratory. The Forward and Reverse Characteristics of Diode of a germanium diode are similar to those of a silicon diode, with some important differences. ECE 231 Laboratory Exercise 5A Diode Characteristics 3 R. Thus it acts as a voltage regulator. Introducing Dopants to Silicon and Germanium. Zener diode characteristics and Zener diode as Voltage regulator. Photodiode Characteristics 8 I-V CHARACTERISTICS The current-voltage characteristic of a photodiode with no incident light is similar to a rectifying diode. , which will also take into account the effect due to environmental changes like temperature etc. SILICON DIODE CHARACTERISTICS 1. It also serves as a springboard for the majority of all other solid state devices. The lab experiments are a combination of new and review material. By adjusting the rheostat, voltmeter reading is increased from 0 and in each time note the corresponding reading in milliammeter. DSO, Signal Generator, DC Power Supply, 2. Once the diode starts conducting it maintains almost constant voltage across the terminals whatever may be the current through it, i. Zener Diode I-V Characteristics DNA Technology is an online shop for Electronic components, Modules, Kits, Sensors & Degree, Diploma Engineering projects. One of the most common types of diode is the ‘silicon diode’. VI characteristics of zener diode. 12 volt - 5-Watt zener diode 8. You will also use a multimeter to measure the dc voltages. Zener diode characteristics apparatus (forward & reverse v-i characteristics) Objective : to study forward & reverse v-i characteristics of zener diode. To design, build and test a Zener regulator circuit. 7V) the current increases drastically with respect to the increase in the voltage. Building a Voltage Regulator With an ideal Zener diode, construction of a voltage regulator is easy, simply connect the diode between the. The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse current through it and above which it causes a significant amount of reverse bias current to flow through it. This is a simple Zener regulator circuit where the diode maintains a nearly constant output even though the current through it changes. Null result for Cahill's 3-space gravitational wave experiment with Zener diode detectors Mechanical models of a viscoelastic body, such as Kelvin-Voigt, Maxwell, and Zener , are widely used in the analysis of crash tests and accident reconstructions; see [5]. Use suitable input scales and calibrate the scale on the recording sheet. If the Zener diode voltage and the transistor base-emitter voltage are not constant with temperature but [R. To calculate % line regulation 3. Silicon, Zener, LED Diode Characteristics Scientech AB01 Silicon, Zener, LED Diode Characteristics is a compact, ready to use Diode Characteristics experiment board. Zener Regulator Laboratory Procedure (figures and equations on page 2) 1. Experiment topics: o Characteristics of a semiconductor diode o Characteristic of an LED o Characteristic of a zener diode o Transistors o Characteristics of a transistor o LDR photoresistor (light dependent resistor) o Thyristors in DC circuits o Temperature response of NTC and PTC thermistors o Delayed switching processes. Zener Diode I-V Characteristics DNA Technology is an online shop for Electronic components, Modules, Kits, Sensors & Degree, Diploma Engineering projects. Using a Zener diode like this isn't a particularly efficient way to generate a fixed voltage reference due to the high currents involved, but it's quite simple and reliable. V-I Characteristics 2. Positive Clamper During the negative half cycle of the input voltage V in the diode is forward biased and the current flows through the circuit. 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. Theory: A diode, in electronics, is a two terminal electronic component with an asymmetric transfer characteristics, with low resistance to current flow in one direction and high resistance to current flow in the other direction. Use the diode equation for that state to solve the circuit equations and find i D and v D 3. One of the most common types of diode is the ‘silicon diode’. Black box experiment; Identification of unknown passive electrical components and determine the value of Inductance and Capacitance 2. S Bharadwaj Reddy July 18, 2016 September 27, 2016 July 18, 2016 September 27. 41 V respectively. you may have to improvise in the absence of the proper zener diode. Student can find out zener reverse break-down voltage. Description. voltage characteristics of various solid state PN junction diodes such as the conventional Si diode, the Schottky barrier diode, the Zener diode and Light emitting diode (LED). Introducing Dopants to Silicon and Germanium. Note down the contact potential. For positive input half cycle diode D1 is Forward biased and acts like a short while diode D2 acts like an open upto Vz. Two terminals: anode and cathode. The P type has excess. without affecting the Zener voltage. It is believed that standard Shockley diffusion theory is probably appropriate for the silicon Zener diode. zener diode is operated in this region when it is being used as a voltage regulator. To design, build and test a Zener regulator circuit. What is a pn junction? The contact surface between the layers of p-type and n-type semiconductor pieces plated together so as to form a p-n junction is called the p-n junction. The voltage remains at the Zener breakdown voltage value, but the current through the diode increases when the input voltage gets increased. Due to its doping characteristics, the zener diode is made to use at high breakdown voltage. • Maximum zener current: The maximum dc current, IZM, is listed in 10th column. Experiment #8: FET. Zener Diode Source : Concept electronics. 1 Forward Voltage Drop Electricity uses up a little energy pushing its way through the diode, rather like a person pushing through a door with a spring. Basically there are two types of voltage regulators (i)Series Voltage. When a diode is reverse biased a leakage current flows through the device. When the positive polarity is at the anode – the diode is forward biased and is conducting. The zener voltage regulator consists of a current limiting resistor RSconnected i. Circuit Diagram Zener Diode Characteristics - the circuit diagram of the zener diode is shown in the figure below the zener diode is employed in reverse biasing the reverse biasing means the n type material of the diode is connected to the positive terminal of the supply and the p type material is connected to the negative terminal of the supply how to select a zener diode one is the zener. LED characteristics and analysis of the experiment results. Basic Experiment and Design of Electronics. The cathode line is extended to resemble an S. Read on to understand how zener diodes and resistors are matched for any particular scenario. 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 failure case 1, the Zener diodes are conducting, the fuse is tripped and protects the Zener diode from overload. But, if there is a large enough negative voltage across it then it will conduct in the reverse direction. Diodes and Diode Circuits TLT-8016 Basic Analog Circuits 2005/2006 2 3. VI characteristics of zener diode. The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse current through it and above which it causes a significant amount of reverse bias current to flow through it. Objective: Study of the Zener Diode applications. 6 Object:- To draw the characteristic curves of a forward & reverse Biased P-N junction diode and to determine the static resistance of the given diode. There are 81 diode characteristics suppliers, mainly located in Asia. Electronic symbols for diodes. What is the order of energy gap in a pure. What is a pn junction? The contact surface between the layers of p-type and n-type semiconductor pieces plated together so as to form a p-n junction is called the p-n junction. 6 6-How would be the forward characteristics if zener diode was in forward bias? Show the forward characteristics in figure 13. In use they are reverse biased. These courses run concurrently and the aim of the manual is to introduce students to laboratory procedure including data recording and report writing. without affecting the Zener voltage. AIM: To draw the characteristic curve of a Zener diode and to determine its reverse breakdown voltage. 1 Forward and Reverse Characteristics of PN Junction Diode. The curves are in good agreement with those plotted using conventional power supplies. 49 i-v characteristic of Zener diodes Knee Current. Diode clamping circuit simply consists of a diode D and capacitor C as shown in below Figure. In this case, the 1N4462 component has a Zener voltage (V Z) of 7. Breakdown voltage is also known as Zener knee voltage. Semiconductor Circuits: Theory, Design and Experiment details the information that are essential in designing and modifying circuits involving transistors and related semiconductor devices. Experiment 10: To study the characteristics of a common-emitter npn or pnp transistor and to find out the values of current and voltage gains. The idea with the zener regulator is to take advantage of the breakdown behavior of the zener diode. For a real Zener diode, a finite current (called the knee current) is required to get into the region of voltage regulation ; Just like regular diodes. By model I am interested in npn, pnp transistor, FET, BJT, MOSFET, and some also digital experiments like decade counter, up down counter, ic 555,. tutorials we saw that simple diodes are made up from two pieces of semiconductor material, either silicon or germanium to form a simple PN-junction and we also learnt about their properties and characteristics. EXPERIMENT 2 ZENER DIODES 2. Frank Smith, Cal Poly Pomona University, 2016 Figure 2. It is a useful adjunct to a Zener regulator. Once the reverse bias voltage becomes more than the Zener breakdown voltage, a significant amount of current starts flowing through the diode due to Zener breakdown. The zener diode is orange and black and has 3V3 written on it - meaning 3.