15 0 obj Universiti Kebangsaan Malaysia. As a consequence, current flows through diodes D3 and D4. Therefore, in this lab, we were instructed to measure and analyze the static characteristic of diodes. University. In digital or mixed-signal applications, there is a need to precisely regulate the voltage entering or exiting a circuit. Course. Free electrons appear at room temperature due to breaking of the covalent bonds. The half – wave rectifier circuit is similar to a series clipper circuit. CONCLUSION This experiment focuses on the investigation of the basic characteristics of a diode. <> endobj University. This lab will focus on the fabrication of a Schottky diode and the characteristics they possess. The maximum voltage across the diode is Vm. In the case of normal diodes the diode damages at the break down voltage. A Brief List of Applications of Diode with Details. Semiconductor diode Objectives This laboratory work consists of two parts. <> endobj A single diode or four diodes transform 110V household power to DC by forming a halfway (single diode) or a full-wave (four diodes) rectifier. Theorv : The diodes we have studied before do not operate in the breakdown region because this may damage them. endobj Diodes: Experiment Guide Components required for this lab: 1. endobj Lab Report . It is acting as normal diode while forward biasing. Analog lab 1-2 - Diode characteristics & Design of Rectifier circuits. Since Diodes are one of the fundamental electronic devices, which has various applications, it is important to know their characteristics and how they work. Than & Bhavin 2. partners lab.All the prelab must be done and read before the session start. The primary objectives of this lab are: 1. This lab studies diodes. waveforms in the lab report. This will give us the forward-bias characteristic of the diode. <> Explain the effects of using a diode that is not ideal. 10 0 obj Include your recorded waveforms in the lab report. PRE-LAB WORK 1. Diode characteristics & Design of Rectifier circuits. Chapter 6: Diode applications (Power supplies, voltage regulators & limiters) ... ALM1000 Lab Activity Diode Rectifiers. 8 0 obj This was conducted as an introductory to Electronics laboratory and in line with some topics in lecture classes. Note: All diodes used are 1N540 (Silicon junction diode) and 1N747 (Zener diode). If the diode in series clipper circuit is in forward bias condition, the output waveform at the load follows the input waveform. 3. Some of the characteristics that will be investigated are the I-V curve and the rectification properties. xœ+äå*£@02ÍÍõÌ-€ÐÌTÏÈÔ5Õ3630T0Ð3002220RHÎååÒ÷ÌMLO54SpÉW€h ‚¿ Course. Academic year. Name of the Experiment : Zener Diode applications. 2019/2020 (a) P-N junction (b) schematic symbol (c) diode packaging. <> Than & Bhavin UCSI University. This device can be operated by controlling the voltage applied to it. 3- Filling all tables and answering all questions in the report. Set the polarity switch of the CTA to “NPN / n-channel / diode forward”. If the voltage applied to the diode is greater than the threshold level (ge… Videos Tutorial . 14 0 obj Diode is made of P and N type materials and has two terminals namely anode and cathode. Úá.„ The diodes are made by semiconductors such as germanium, silicon and selenium. endobj Since Diodes are one of the fundamental electronic devices, which has various applications, it is important to know their character…, 100% found this document useful, Mark this document as useful, 0% found this document not useful, Mark this document as not useful, Save Eletronics Lab Report - Diodes For Later. Based on the data sheet, what range of dc diode drop do you expect to see given the expected diode current? mean) load voltage, dc load current, dc diode current, and peak- to-peak ripple voltage. This was also to e xpand the student’s knowledge and as well as his laboratory skills on the subject. Therefore, in this lab, we were instructed to measure and analyze the static characteristic of diodes. Many wave shapes can be produced with the proper application of these two important diode functions. The diodes found many applications in electrical and electronics field such as rectifier, voltage regulators, switches, signal demodulators, signal modulators, signal mixers, and oscillators. endobj Did the clipper circuits in step 6 of the Procedure work as expected? [1] Understanding how a diode works from an ‘atomistic’ and a ‘circuit elements’ point-of-view is … <> Ì×å?ÜÝځ¶Óñm[3£uUDnwNтÔv‹|üâïJ‚°4'ؖueÛ`ý ¶›É 1n-1)ìÝwlÈvyéî81š§Ãõ×kìJ×Fd{žvæP(;ØH{þ.à#Ÿ5¬9RŽÉ$ÐSÎ ¥nŠ§lBR†2W6Xΰ7Ò96„wkâ*{X’á^;àñKžÛš¬d Å|é9sÉÍ3“~¹ž×"ԆžÏôƒ ;½¹Õ&Qm¿`O¢â©z0{Ú~¹žÔ†ßS®=("4¡ðœ*8—&ž0ä, ´‡ð„!ƒí^µq…'Y.0a… xBŠA­#ÂP”ÂfdŠ'@˜dímáñv†á0ï28®j×ã»6•0íJ뻇àß Jž+ gâDH(JEJSüdÆ'WøÁüýºYŽuV’½ÏçFÀ×^VR endstream 1. 6.1.3 Rectifier output smoothing. 9 10. endobj Replace the 1N914 signal diode with the 4.7V Zener diode. Lab IV: Silicon Diode Characteristics – Page 4 Figure 1. 6 0 obj You will find the relationship between the voltage and current in a diode, and study temperature effects, rectification, nonlinear phenomena, and frequency doubling. Lab 7: Diode Circuits OBJECTIVES To reinforce the concepts behind diode circuit analysis Verification of diode theory and operation To understand certain diode applications, such as rectification and clipping MATERIALS Your lab parts. You will make I-V curves for each and will see how a diode can be … Lab #1 The diode allows only half of the AC waveform to travel through it. Set the Channel 1 attenuation knob to 0.2 V/div. The average output voltage of the rectifier is given by The average output current is given by When the diode is reverse biased, entire transformer voltage appears across the diode. Method The circuits that were used in the Prelab are shown in the figure Figures 1 &2. We know that a Diode allows the current flow only in one direction and hence it acts as a one-way switch. endstream They can also handle high frequencies and have lower power loss which makes them ideal for many applications [2]. Lab Report 3: Diode Applications (Clippers and Clampers) Contents that should be delivered for every report: 1- Netlist code for each experiment showing all components, models and control statements. endobj endobj 9. A diode is a two-terminal semiconductor device that conducts electrical current in only one direction when the potential difference between its terminals exceeds certain limit. 3. k‚í¢6ƒV³ rU˜s©S›Ì6íÊYš„3O†z=0 ϬŠ ? 11 0 obj It has a particular voltage known as break down voltage, at which the diode break downs while reverse biased. To demonstrate the characteristics and applications of the diodes in circuits is the purpose of the resistor; the properties of a rectifier diode are verified by the results. Specifically, measure forward and reverse resistances, voltages and the current. 10M resistor (x 1) I. Diodes Overview Diodes are mostly used in practice for emitting light (as Light Emitting Diodes, LEDs) or controlling voltages in various circuits. l‹Ë chung chinngee. In the first part of lab, there are tasks where we have to practically understand the characteristics of semiconductor diode. The output voltage waveform is shown in fig. Discussion: Clipping and clamping are very widely used diode applications. <> 7 0 obj Under what circumstances would the effects of a non-zero forward resistance and a non-zero knee voltage be most observable? In the Lab – Zener Diode Characteristic 1. This application note discusses the implementation of this voltage regulator and its … When the diode is in reverse bias and it is unable to conduct current, the output of … Lab Report . Components required: ... During the negative half cycle, the diode is reverse biased and it is equivalent to an open circuit, hence the current through the load resistance is zero. Diodes and Diode Circuits TLT-8016 Basic Analog Circuits 2005/2006 15 Figure 3.37 Thermal energy can break a bond, creating a vacancy and a free electron, both of which can move freely through the crystal. Introduction and Objectives 3. Assume that the diodes used in the circuit are ideal. To understand about the revers saturation current Is, and the ideality f, EGR220 Aim: To design and simulate a Full Wave Rectifier circuit. – ECE 09.311: Lab 2 – Electronics 1 - Diode Characteristics Adam Fifth Rowan University February 12, 2019 1 Purpose The purpose of this lab is to measure the properties of a diode, zener diode, and LED. The DF06MA diode bridge is of the same family as the DF02 and DF04 diode bridges you used in a previous lab. Rectifier Diode. The Zener diode has a unique property that offers a simple, low-cost solution to this problem. stream Diode nomenclature and identification of polarity. 5 0 obj Figure 3.3: Symbol of the diode Figure 3.4: Equivalent circuit model of the diode a) Obtain the transfer characteristic by using the model extracted in section 3.1 and R = 1KΩ. <>>>/BBox[ 0 0 172.42 61.274] /Matrix[ 0.41758 0 0 1.175 0 0] /Filter/FlateDecode/Length 69>> When the voltage applied to the anode is positive with respect to the cathode, the diode is forward biased. The diode can become conductor went the diode are place inforward bias and also become insulator if place in reverse bias.Like the figure (a) the diode become a conductor because went diode in forwardbias the resistance in diode become lower and in figure (b) the diode becamehigher resistance because of that the current cannot through it. In general, the cathode of a diode is marked by a solid line on the diode.The primary function of the diode is rectification. Only one per 1.4×1013 bonds is broken. Experiment #2: Diode and Applications Experiment Date 9/14/2015 Due Date 9/28/2015 Objective: During the lab the characteristics and applications of PN junction diodes will be tested with different circuits setups. To analyze and understand the nature of I-V curve of the diode 2. <> 1N4148 diode (x 1) 2. A rectifier diode is a type of P-N junction diode, whose P-N junction area is very … 9 0 obj 22u capacitor (x 1) 5. Aim: To design and simulate a Half Wave Rectifier circuit. LN can cause severe skin and eye "burns". Objective: Study of the Zener Diode applications. Theoretical Output Voltages Predict the expected output waveform of each circuit shown in Figures 1 through 6. 2015/2016 A Zener diode is different; it is a silicon diode that the manufacturer has optimized for operation in the breakdown region. Half-wave or full-wave rectification does not produce a constant-voltage DC as we have seen in the previous figures. <> 13 0 obj For the prelab, estimate the dc (i.e. EEM328 Electronics Laboratory - Report2 - Diode Characteristics - Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or read online for free. <> xœí]TYº^ÇÙÝ÷Þy{ö½³o "ˆ stream Introduction and Objectives One significant application of diodes is to convert AC power to DC power. <> In principle, Schottky diodes are rectifying as the current can only flow one way. <> The goal for the second experiment is to be come familiar with the PN junction diode and its different applications. The diode is a device formed from a junction of n-type and p-type semiconductor material. Lab #1 The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. Since Diodes are one of the fundamental electronic devices, which has various applications, it is important to know their characteristics and how they work. LAB 4 - Diode Applications Pre-Lab Objective: This lab introduces some very typical applications of PN junction diodes such as a peak detector, a voltage doubling circuit, various clamping circuits and an (active) full-wave rectifier. 1k resistor (x 1) 3. This lab uses liquid nitrogen (LN), which is very cold: approximately. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. *£¢"¨˜Å2†Á. endobj Video Tutorial . 16 0 obj 1M resistor (x 1) 4. 12 0 obj A diode is an electronic component which has two electrodes named as anode and cathode. Circuit Theory (EE112) Uploaded by. EGR220 endobj The primary objectives of this lab are: 1. 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