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