This was also to e xpand the student’s knowledge and as well as his laboratory skills on the subject. Some of the characteristics that will be investigated are the I-V curve and the rectification properties. 13 0 obj 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. <> 3. endobj In the Lab – Zener Diode Characteristic 1. Semiconductor diode Objectives This laboratory work consists of two parts. 16 0 obj 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. xœ+äå*£@02ÍÍõÌ-€ÐÌTÏÈÔ5Õ3630T0Ð3002220RHÎååÒ÷ÌMLO54SpÉW€h ‚¿ Since Diodes are one of the fundamental electronic devices, which has various applications, it is important to know their characteristics and how they work. Note: All diodes used are 1N540 (Silicon junction diode) and 1N747 (Zener diode). In this experiment, we have constructed some clipper and clamper circuits, gave some input voltage and seen the output of the waveform in the oscilloscope. Lab Report . Than & Bhavin But in the waveform and the report there are some points that I want to discuss. Assume that the diodes used in the circuit are ideal. Video Tutorial . <> 10 0 obj We know that a Diode allows the current flow only in one direction and hence it acts as a one-way switch. partners lab.All the prelab must be done and read before the session start. In digital or mixed-signal applications, there is a need to precisely regulate the voltage entering or exiting a circuit. A Zener diode is different; it is a silicon diode that the manufacturer has optimized for operation in the breakdown region. For the prelab, estimate the dc (i.e. endobj The output voltage waveform is shown in fig. This was conducted as an introductory to Electronics laboratory and in line with some topics in lecture classes. Therefore, in this lab, we were instructed to measure and analyze the static characteristic of diodes. This lab studies diodes. When the diode is in reverse bias and it is unable to conduct current, the output of … endobj If the voltage applied to the diode is greater than the threshold level (ge… Set the polarity switch of the CTA to “NPN / n-channel / diode forward”. chung chinngee. Universiti Kebangsaan Malaysia. Discover everything Scribd has to offer, including books and audiobooks from major publishers. 2- Output graph of each experiment. 14 0 obj Based on the data sheet, what range of dc diode drop do you expect to see given the expected diode current? It has a particular voltage known as break down voltage, at which the diode break downs while reverse biased. Many wave shapes can be produced with the proper application of these two important diode functions. A diode is an electronic component which has two electrodes named as anode and cathode. mean) load voltage, dc load current, dc diode current, and peak- to-peak ripple voltage. Úá.„ 3. 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. endobj The primary objectives of this lab are: 1. UCSI University. Lab #1 *£¢"¨˜Å2†Á. Than & Bhavin 2015/2016 Did the clipper circuits in step 6 of the Procedure work as expected? endobj 1k resistor (x 1) 3. One significant application of diodes is to convert AC power to DC power. It is acting as normal diode while forward biasing. Include your recorded waveforms in the lab report. 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. 9. If the diode in series clipper circuit is in forward bias condition, the output waveform at the load follows the input waveform. stream (a) P-N junction (b) schematic symbol (c) diode packaging. Aim: To design and simulate a Full Wave Rectifier circuit. PRE-LAB WORK 1. 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. 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. endobj Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. 22u capacitor (x 1) 5. endobj Replace the 1N914 signal diode with the 4.7V Zener diode. Course. Lab IV: Silicon Diode Characteristics – Page 4 Figure 1. The diodes found many applications in electrical and electronics field such as rectifier, voltage regulators, switches, signal demodulators, signal modulators, signal mixers, and oscillators. Discussion: Clipping and clamping are very widely used diode applications. Videos Tutorial . 2. <> The half – wave rectifier circuit is similar to a series clipper circuit. They can also handle high frequencies and have lower power loss which makes them ideal for many applications [2]. EGR220 Therefore, in this lab, we were instructed to measure and analyze the static characteristic of diodes. This lab uses liquid nitrogen (LN), which is very cold: approximately. Introduction and Objectives 6.1.3 Rectifier output smoothing. <> 3. In principle, Schottky diodes are rectifying as the current can only flow one way. endstream 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. Free electrons appear at room temperature due to breaking of the covalent bonds. The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. To understand about the revers saturation current Is, and the ideality f, EGR220 Explain the effects of using a diode that is not ideal. The diode allows only half of the AC waveform to travel through it. Set the Channel 1 attenuation knob to 0.2 V/div. endstream endobj In general, the cathode of a diode is marked by a solid line on the diode.The primary function of the diode is rectification. <> 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. The diode is a device formed from a junction of n-type and p-type semiconductor material. The primary objectives of this lab are: 1. This device can be operated by controlling the voltage applied to it. University. As a consequence, current flows through diodes D3 and D4. Name of the Experiment : Zener Diode applications. You will find the relationship between the voltage and current in a diode, and study temperature effects, rectification, nonlinear phenomena, and frequency doubling. The measurements are to be collected into table. Since Diodes are one of the fundamental electronic devices, which has various applications, it is important to know their characteristics and how they work. Only one per 1.4×1013 bonds is broken. [1] Understanding how a diode works from an ‘atomistic’ and a ‘circuit elements’ point-of-view is … endobj Lab Report . <> The diodes are made by semiconductors such as germanium, silicon and selenium. To analyze and understand the nature of I-V curve of the diode 2. 8 0 obj Method The circuits that were used in the Prelab are shown in the figure Figures 1 &2. 11 0 obj ... During the negative half-cycle of input voltage waveform, on the other hand, the diodes D3 and D4 are forward biased whereas the diodes D1 and D2 are reverse biased. 15 0 obj stream Lab 2 KKKL2152- Diode Applications. Introduction and Objectives endobj This will give us the forward-bias characteristic of the diode. <> The purpose of this lab is to study the characteristics of the diode. EEM328 Electronics Laboratory - Report2 - Diode Characteristics - Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or read online for free. 12 0 obj <> waveforms in the lab report. The Zener diode has a unique property that offers a simple, low-cost solution to this problem. Lab #1 <> 7 0 obj CONCLUSION This experiment focuses on the investigation of the basic characteristics of a diode. k‚í¢6ƒV³ rU˜s©S›Ì6íÊYš„3O†z=0 ϬŠ ? Academic year. 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. Diodes: Experiment Guide Components required for this lab: 1. MAKMAL ELEKTRIK DAN ELEKTRONIK TAHUN 2 (KKKL2152) Academic year. Circuit Theory (EE112) Uploaded by. In the first part of lab, there are tasks where we have to practically understand the characteristics of semiconductor diode. <>>>/BBox[ 0 0 172.42 61.274] /Matrix[ 0.41758 0 0 1.175 0 0] /Filter/FlateDecode/Length 69>> 1M resistor (x 1) 4. Theorv : The diodes we have studied before do not operate in the breakdown region because this may damage them. Half-wave or full-wave rectification does not produce a constant-voltage DC as we have seen in the previous figures. In the case of normal diodes the diode damages at the break down voltage. 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. The diode must be capable to withstand this voltage. Under what circumstances would the effects of a non-zero forward resistance and a non-zero knee voltage be most observable? – 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. Objective: Study of the Zener Diode applications. This application note discusses the implementation of this voltage regulator and its … 9 0 obj A Brief List of Applications of Diode with Details. 6 0 obj Aim: To design and simulate a Half Wave Rectifier circuit. 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. Diode characteristics & Design of Rectifier circuits. 2019/2020 1N4148 diode (x 1) 2. Course. Chapter 6: Diode applications (Power supplies, voltage regulators & limiters) ... ALM1000 Lab Activity Diode Rectifiers. Analog lab 1-2 - Diode characteristics & Design of Rectifier circuits. Diode nomenclature and identification of polarity. Diode is made of P and N type materials and has two terminals namely anode and cathode. 9 10. 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. LN can cause severe skin and eye "burns". xœí]TYº^ÇÙÝ÷Þy{ö½³o "ˆ <> Theoretical Output Voltages Predict the expected output waveform of each circuit shown in Figures 1 through 6. This lab will focus on the fabrication of a Schottky diode and the characteristics they possess. The DF06MA diode bridge is of the same family as the DF02 and DF04 diode bridges you used in a previous lab. 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. You will make I-V curves for each and will see how a diode can be … 3- Filling all tables and answering all questions in the report. The maximum voltage across the diode is Vm. Specifically, measure forward and reverse resistances, voltages and the current. endobj A rectifier diode is a type of P-N junction diode, whose P-N junction area is very … <> l‹Ë 5 0 obj University. 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 The goal for the second experiment is to be come familiar with the PN junction diode and its different applications. 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. Rectifier Diode. 1. When the voltage applied to the anode is positive with respect to the cathode, the diode is forward biased. endobj This experiment focuses on the subject to “NPN / n-channel / diode forward” electrodes named anode! A constant-voltage dc as we have to practically understand the characteristics that will be investigated the. 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