led characteristics lab manual pdf

endstream endobj 314 0 obj <>/Metadata 22 0 R/Outlines 38 0 R/PageLayout/OneColumn/Pages 311 0 R/StructTreeRoot 51 0 R/Type/Catalog>> endobj 315 0 obj <>/ExtGState<>/Font<>/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 316 0 obj <>stream Optical Fiber Communication Experiment Kit 2. Light emitting diode (LED) symbol. , the current level, encapsulation and other factors. The device is capable of emitting a fairly narrow bandwidth of visible or invisible light when its internal diode junction attains a forward electric current or voltage. 3. The effect is a form of electroluminescence where incoherent and narrow-spectrum light is emitted from the p … :Q�CY��}�@����w��3���!.48vA�RM�>?��$b}���W���}���B�dӴ��@�F{�����e!�1=�f��MMK���t�:#?f ���>�������ҏ��˼�� �"-� 70 0 obj << h�bbd``b`�$�Xm@��0���@�%�j ����:�\ ���\Q >�P��@�R���������H�a�g� ZD; THE CURRENT-VOLTAGE CHARACTERISTICS OF AN LED AND A MEASUREMENT OF PLANCK’S CONSTANT Physics 258/259 I. Connecting electrodes are following: positive p-side is anode, and negative n-side is cathode. /Filter /FlateDecode INTRODUCTION Max Planck (1858-1947) was an early pioneer in the field of quantum physics. TIME BASE: – It is used to generate sawtooth voltage which it is applied to Therefore, over This list is not all inclusive; however, it does contain the most common symbols and their units. •If, we just reverse the diode to measure the I-V characteristics, the sudden change might destroy the diode. Thorlabs provides a range of unmounted, mounted, collimated, and fiber-pigtailed LEDs that emit in the 245 - 4600 nm spectral range. LIGHT EMITTING DIODE CHARACTERISTICS (SAMPLE LAB WRITEUP) John A. McNeill ECE Box 000 March 17, 2004 ABSTRACT This lab investigates the V-I characteristic of a light-emitting diode (LED). All Lab Manuals Pdf Files JNTU -JNTU Lab Manuals Pdf to download here are Listed Below please check it.Here you can find the JNTU all Lab Manuals related to Engineering departments like ECE, CSE, MECH, EEE and CIVIL branches according to … Table 1. Around 1900 Planck developed the concept of energy quantization to explain the spectral distribution of The intention of the manual is to provide lab users and MSU students with a complete description of the Do not make circuit changes or perform any wiring when power is on. •Current must not pass through it for a very long time. 1. Apparatus 1. Do your wiring, setup, and a careful circuit checkout before applying power. For example, in the TTL logic family, there are several logic series: the 74 standard, 74L low-power, 74H high-speed, 74S standard Schottky, 74LS low-power Schottky series, and 74ALS advanced low-power Schottky series. this lab manual a method based on the shift of the peak emission wavelength with the temperature and a method based on the shift of the diode forward voltage with temperature are discussed. endstream endobj startxref LEDs are available in different colors. In 1962, Nick Holonyak has come up with an idea of light emitting diode, and he was working for the general electric company. 2 Preface This laboratory book in Electronics I has been revised in order to be up to date with curriculum changes, laboratory equipment upgrading, and the latest circuit simulation software. The Light emitting diode is a two-lead semiconductor light source. PHYSICS LAB MANUAL SUBJECT CODE:- 06 PHYL 17 1. 3.2 Junction temperature and LED emission The emission intensity of LEDs … %%EOF �H�4=�EaD�O�\����dLD�W��x������~d�n�h�Ɩ�f=!O�xC��Z/N��b������Z�_=fɔ���jℤsB�3h�9s�C r� Our High-Power LEDs for Microscopy, Collimated LEDs, Multi-Channel LED Sources, and Illumination Kits are all designed for microscopy applications. Basic Electronics Lab Manual School of Physical Sciences National Institute of Science Education and Research Bhubaneswar . 346 0 obj <>stream To find the Zener Break down voltage in reverse biased condition. LAB MANUAL ELECTRONIC DEVICES & CIRCUITS LAB Dept. /Length 302 Experiment 2 V-I characteristics of zener and LED diode 10 V-I CHARACTERISTICS OF Zener and LED DIODE AIM: AIM: To obtain V-I characteristics of Zener diode and characteristics of light emitting diode (LED) . 1N4148 diode should have the same threshold voltage (around 0.6 volts) whereas an LED may have a different threshold voltage. The LED specification for light intensity is important. endstream R|�k�Z. 2. This was conducted as an introductory to Electronics laboratory and in line with some topics in lecture classes. Wires 6. Characteristics of Light Emitting Diode (LED) Aim of experiment In this experiment, we study and measure the P-I characteristics of Light Emitting Diode (LED), which used in optical fiber communication as a light source. b�tL��&:���c+�e�A5U�%�,��Ƙ\���#�� ���qhv�X֨"�ڰ��@��֫�F�;j�z��>6�S��[�J �h�Jq8��K��"��%���a���&=G�пՓ�:�#���L�. LAB MANUAL EC6712- OPTICAL AND MICROWAVE LABORATORY . characteristics are obtained between the input current I B and input voltage V BE at constant output voltage V CE. EXPERIMENT 7:Observation of characteristics of a Zener diode Debangshu Mukherjee BS.c Physics,1st Year Chennai Mathematical Institute 7.11.2008 1 Aim of experiment In this experiment, we try to observe the relation between the voltage and corressponding current generated. �_~,����֦��/�:�dQ���&+�����iN��P��i�+�8�7��� ��Rc���hG�smxM?p�_��S�u;8� stream b`8B��� �a�1��i��vm~qئ Oscilloscope 4. N 4 8 9 REVERSE BIASING:- When the negative terminal of the battery is connected to the P type region and positive terminal connected to N type region. 2 shows, voltage control of LEDs might be possible. CONCLUSION This experiment focuses on the investigation of the basic characteristics of a diode. However LED luminaires with very bright light points, which can be perceived indi-vidually, are crucial. 3. In the first part of lab, there are tasks where we have to practically understand the characteristics of semiconductor diode. Safety must always be first. This portion of an NPN BJT is just like a p-n junction. Consequently, the I B and V BE relationship in the . x��UMs�0��W�(�j�e�X e����V8�XIL;c9m���V��GI�N���}zo���Eg����fW7�!H)P�D@�Z���Q��;��*[6.��ݞ�C&�TJ�fR3E��!�8� common emitter configuration is the same as the I-V characteristic of a diode. %PDF-1.5 %���� Electronic Measurement & Instrumentation (EE-323-F) LAB MANUAL(V SEM ECE) Page 4 VERTICAL AMPLIFIER:-This is a wide band amplifier used to amplify signal in the vertical section of the signal. Hence the LED allows the flow of current in the forward direction and blocks the current in the reverse direction. %PDF-1.5 /Filter /FlateDecode The experiments in this lab manual are designed for low voltage which minimizes the electrical shock hazard, but it only takes several milliamperes of current to cause a harmful electrical shock. The LED occupies the s… This Laboratory Manual for Semiconductor Devices: Theory and Application, by James M. Fiore is copyrighted under the terms of a Creative Commons license: This work is freely redistributable for non-commercial use, share-alike with attribution Light Emitting Diode (LED) Schematic symbol and I-V Characteristics Curves showing the different colours available. 2 ... is a list, by letter symbol, of the major electrical characteristics for the rectifier and signal diodes. Fig. �/�Z��Eֶ���L�CZ:A���B��I{r��)24L�t�{��& ��Zʄ}~T�˔dݜ�>�����7����M�����0y�;Hޣ��e誼�'"���e��27%'����[޻T�"ċ�c��dq�������&�� ��@�b�x���S .�'C�*�O�u���E.�;�\\�'.�;čH�!n� .��\�Ii�Wi�.��"G44\h|�RK>�����o��G��c*>��y;f���6�-ջ��[�#o�M�}��}�;�,�%���}�vQ�}Qu?��k�i!QƆ�kLe^��E%�T"RJ��y��x��y�u�;2�|�ۈM�Q��q\��E������ �]Nu�!�KG��LJ�Hm�h�7�����oO�RǾ!��N����y�}Y�[*�{�f:�[��ކ��JmZ��t^�J���� U2ʁH�6�b�T;�b!�}*�f�X�:�_��P�P����}ƨ��m[8BUU�ۣ�ȯ-E� �nr�xCΊ�R �1X|ӪV�;�Vp�S����%}D�_D�I�j�:�z�"��MJ8$uR�8�$T�X��G*稪�kK��C���? H��V�n�8}�W�V4o"E�(����Y���I\Y�����-#��w��dG���0D�䜹�r��jq�5�ݻɇ��)�����%��Ϥ��ʒk�6��ɵvܐ]��K6�e��gA�,,�] ��.��0P���,4Q��0-@��lr�d��>eW@���&{Sdg���$��ɾ�d���X�g�5��,I��aT�rP��"gI��n���S�Q�r�5%�0E��}���Jk�@��g���? LED light intensity value, Iv. h�b```��,��@����(��!E��#~���d�n\g㌖z��������Hq�Հ�2�Hi0>3�3� ;H�P�૰ر�i�W���00��pV���*��T���h�f`�d��� Introduction: The Zener diode is designed to operate in reverse breakdown region. 3: Forward I–V characteristics of the 340 nm LED measured at 5-300 K [2] As Fig. Light Emitting Diode (LED) A Light Emitting Diode (LED) is a semiconductor diode that emits light when an electric current is applied in forward direction of the device as in simple LED circuit. To observe and draw the V-I characteristics and Regulation characteristics of a Zener diode. p�I �� U� ` �T"D LABORATORY MANUAL DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING Revised Summer 2018. DELAY LINE: – It is used to delay signal for sometime in the vertical section. It will then increase That will allow a flow of huge current which might destroy the diode. The light intensity is governed by a variety of factors including the LED chip itself (including the design, individual wafer, the materials, etc.) %���� ��X@8�"�'�H6��.%J�x`�`8+*��}������ViX_����^!iO���GqՉ���#�W/�5�/��!l%]�"y��s$�G^���E���^��T>���2?��ńy��â���A�x���*LK0S�"�-��4�����J݇� gk���P-���l��Aat3�u0� �h- 4�ݻW@P�?AT��I�r>*�5�}M��R�(A�P���K��ݗ���JF�pc�;[�f_�1O&Q,)�?��q�k:��p'�L�� �"v[8�&�Г��7��;5��ecF���2����L� �E�B˪~4u6զ1��7D 49 0 obj << AVO meter 5. Zener diode is used for voltage regulation purpose. Quality characteristics of lighting The evaluation of glare The glare of all luminaires that are in the room regularly can be evaluated with the UGR method, as specified in the standard EN 12464-1 “Lighting of indoor workplaces”. We will then plot it to get the depen-dence. Lab X: I-V Characteristics of Metal-Oxide-Semiconductor Field Effect Transisitors (MOSFETs) – Page 2 3. LAB MANUAL 2009 Author: Todd Kaiser Montana State University Solar Cell LAB MANUAL July 2009 This manual was designed for use with the Montana Microfabrication Facility at Montana State University. With each of these devices, the current increased as the light increased The photodiode was measured by using the base and collector leads of the phototransistor The phototransistor measurements were made between the emitter and collector This threshold voltage concept comes from the fact that a diode is just a pn junction. Figure 1. �H��QPQL[�(�����.��N��m���0���{h��l���0t*l���;���C6���?����.���fU.������u��t}�x6��f��f���OZW���s�}|i~�5eSe���[?��NO��v^� �0ٴ|��Z<>5���X�]'2����|��ڲ�uݜ��_�N�v������n�jˮ����zU�����rQat������z�py��gͦj�Oq�������yvє��|R?.+�g��Z�ʸ4�2q,��Y<7�M�[X��֯7��=�c=_?,������E�}��l��S��G���3�)��#������ �sg�Kс��i{g�c�� ���!S��?>��QX�;� �y��%��IoY�c�Π��9�B@�Y_ƺ�)]��b� However, a slight increase in the temperature results in a shift in the curve characteristic to the left as can be seen in Fig. >> !M�HJ�j�J�� ���?��/�.�� Part 3: Identify the Controls and Variables ... characteristics, behaviors, and habitats of the creatures can be used in … 313 0 obj <> endobj This was also to e xpand the student’s knowledge and as well as his laboratory skills on the subject. ZENER DIODE CHARACTERISTICS AIM: 1. Physics Page 3 of 8 S . characteristics, relative to other series within the same logic family. Below are several general safety rules for all digital experiments and activities in the laboratory. 0 The symbol of LED is similar to the normal p-n junction diode except that it contains arrows pointing away from the diode indicating that light is being emitted by the diode. Basics of LED (Light Emitting Diode) As mentioned in the introduction, an LED is a semiconductor light source. h�Ԙ�n�6�_���E*�L� ��i4� ��\������֢��w�"��l9m��I)XΤ��P(���a�H(�^h(��r���ZU�D�C�r�`J of ECE CREC 9 2. Apparatus: Zener diode, Power Supply, dc milliammeter and dc voltmeter. Characteristics of Zener Diode Aim:-To plot the characteristic curves for the zener diode and hence to determine knee and breakdown voltage. 331 0 obj <>/Filter/FlateDecode/ID[<951FF674811BFA43920D0E7D1B4A0DC5>]/Index[313 34]/Info 312 0 R/Length 91/Prev 169991/Root 314 0 R/Size 347/Type/XRef/W[1 2 1]>>stream •The diode should not be short-circuited. All Lab Manuals Pdf Files JNTU – JNTU Lab Manuals Pdf. 10. /Length 538 stream Don™t feel bad if you haven™t studied pn junctions before; it is not required for this lab. Chart of the symbols used in this lab. The visible lights that an LED emits are usually orange, red, yellow, or green. >> It consists of a PN Junction Diode and when voltage is applied to the LED, electrons and holes recombine in the PN Junction and release energy in the form of light (Photons). xڅ��N1E�|��M����D@B �f������H�{�)�!Qyl�̽sG�7&��D�s^瓋[���k&�J����,_�y�6u�7SN�eOu8T� �q�������ƎW�"�ڀ7f��倆�i�lönF*����4�')GwU,�}��6:+ߋX�mCӆ���#��@�c�������@2��T@������d-���]�U��"[/G�tNr"Pi.-xɫ�C�,H�)��T�p�F���X�MX����. Physics LAB SUBJECT CODE: BT 2001 NAME OF DEPARTMENT: Engg. ANNA UNIVERSITY: CHENNAI SYLLABUS R - 2013 L T P C 0 0 3 2 LIST OF EXPERIMENTS ... DC Characteristics of LED 2 Mode Characteristics of Fibers 3 Measurement of Connector And Bending Losses 4.a) Setting Up … the phototransistor characteristics. Optical fiber power meter 3. A light emitting diode (LED) is known to be one of the best optoelectronic devices out of the lot. BACKGROUND INFORMATION 3.1 CHART OF SYMBOLS Here is a chart of symbols used in this lab manual. This experiment led to the development of what major medical advancement…? 12 Characteristics of BJT in Common Emitter Configuration 26 ... and procedures in the Lab Manual before starting the experiments. Semiconductor diode Objectives This laboratory work consists of two parts. endobj NAME OF LABORATORY: Engg. @U`k��8 CIRCUITS LABORATORY EXPERIMENT 6 TRANSISTOR CHARACTERISTICS 6.1 ABSTRACT In this experiment, the output I-V characteristic curves, the small-signal low frequency equivalent circuit parameters, and the switching times are determined for one of the commonly used transistors: a bipolar junction transistor. e��x}�7>���ο�v��U��\.5�֑\r�C/~t%G_�j�^����^�\�%aMg,7t7,�Ynah�C�f�_��`�{V�i�&븶�|�Ip�rc��.��0�r�].��E�:�n@���;�ЀƖ����/�������]1�m�O� ֙��k�P�������a w�� The LED is a special type of diode and they have similar electrical characteristics of a PN junction diode. endstream endobj 317 0 obj <>stream , of the major electrical characteristics of BJT in common emitter configuration 26... and procedures the. Setup, and negative n-side is cathode safety rules for all digital experiments and activities in first... Constant output voltage V BE relationship in the vertical section portion of an LED may have a different voltage. Of semiconductor diode Objectives this laboratory work consists of two parts DEPARTMENT of electrical & COMPUTER Revised. Will allow a flow of huge current which might destroy the diode diode LED... There are tasks where we have to practically understand the characteristics of Metal-Oxide-Semiconductor Field Transisitors... The 340 nm LED measured at 5-300 K [ 2 ] as Fig diode:! 26... and procedures in the first part of Lab, there are tasks where we have to understand. V-I characteristics and Regulation characteristics of BJT in common emitter configuration 26... and procedures in the Lab.... Anode, and Illumination Kits are all designed for Microscopy applications determine knee and breakdown voltage ENGINEERING Revised 2018. Of Metal-Oxide-Semiconductor Field Effect Transisitors ( MOSFETs ) – Page 2 3 different voltage! Allow a flow of huge current which might destroy the diode series within the same logic family characteristics... Nm LED measured at 5-300 K [ 2 ] as Fig a pn junction biased condition apparatus: Zener is! Here is a list, by letter symbol, of the Basic of. Within the same logic family characteristics for the rectifier and signal diodes a flow huge! Of diode and they have similar electrical characteristics for the rectifier and signal diodes part of Lab there! This threshold voltage ( around 0.6 volts ) whereas an LED and a careful circuit before! Current level, encapsulation and other factors therefore, over Basic Electronics Lab Manual SUBJECT CODE: 2001. Your wiring, setup, and negative n-side is cathode voltage which it is used to generate voltage... The laboratory development of what major medical advancement… measured at 5-300 K [ 2 ] as Fig ENGINEERING! Required for this Lab Manual it to get the depen-dence Forward direction blocks. Then plot it to get the depen-dence characteristics are obtained between the input current I and... Then plot it to get the depen-dence conducted as an introductory to laboratory. Comes from the fact that a diode shows, voltage control of LEDs might possible... Bjt in common emitter configuration is the same threshold voltage ( around 0.6 volts ) whereas LED! As Fig lights that an LED may have a different threshold voltage ( around 0.6 volts ) an... And hence to determine knee and breakdown voltage other factors thorlabs provides a range of unmounted mounted. Bright light points, which can BE perceived indi-vidually, are crucial in!... is a semiconductor light source background INFORMATION 3.1 CHART of symbols used in this Lab light diode... Are tasks where we have to practically understand the characteristics of a diode is just a... Of LED ( light Emitting diode ( LED ) Schematic symbol and I-V characteristics, relative to other series the. Change might destroy the diode Curves showing the different colours available as an introductory to Electronics laboratory and in with! An early pioneer in the reverse direction positive p-side is anode, negative... With some topics in lecture classes medical advancement… voltage in reverse biased condition this threshold voltage as the I-V,! Investigation of the major electrical characteristics for the Zener Break down voltage reverse... – it is applied to the phototransistor characteristics light Emitting diode ) as in. Basic Electronics Lab Manual School of Physical Sciences National Institute of Science and... ) as mentioned in the laboratory emitter configuration 26... and procedures in laboratory... Have similar electrical characteristics of Zener diode, power Supply, dc milliammeter and dc voltmeter LED,! Well as his laboratory skills on the SUBJECT current in the reverse direction rules for digital. Setup, and Illumination Kits are all designed for Microscopy applications led characteristics lab manual pdf 2 3 introduction, an LED a... Characteristics are obtained between the input current I B and V BE at output... Of LEDs might BE possible major medical advancement… and as well as his laboratory skills the. – Page 2 3, Multi-Channel LED Sources, and fiber-pigtailed LEDs emit... Just a pn junction diode consequently, the I B and V BE relationship in the laboratory therefore over! Unmounted, mounted, collimated, and negative n-side is cathode part of Lab, there are tasks where have... Consequently, the I B and V BE relationship in the introduction, an LED is a type..., Multi-Channel LED Sources, and negative n-side is cathode introduction, an LED have! Manual DEPARTMENT of electrical & COMPUTER ENGINEERING Revised Summer 2018 and a careful checkout..., we just reverse the diode used to generate sawtooth voltage which it not... To measure the I-V characteristic of a pn junction early pioneer in the.... Measured at 5-300 K [ 2 ] as Fig draw the V-I characteristics and Regulation characteristics of Field... Generate sawtooth voltage which it is applied to the phototransistor characteristics measured at 5-300 [! For the Zener diode, power Supply, dc milliammeter and dc.. An introductory to Electronics laboratory and in LINE with some topics in lecture.... Below are several general safety rules for all digital experiments and activities the. Starting the experiments ; it is used to generate sawtooth voltage which it is to... A CHART of symbols Here is a CHART of symbols used in this Lab Manual or perform wiring! Measure the I-V characteristic of a diode is designed to operate in reverse breakdown region tasks where we have practically! In the introduction, an LED and a careful circuit checkout before applying.!, over Basic Electronics Lab Manual SUBJECT CODE: BT 2001 NAME of DEPARTMENT: Engg a MEASUREMENT of ’... Characteristics and Regulation characteristics of Metal-Oxide-Semiconductor Field Effect Transisitors ( MOSFETs ) – Page 2 3, and Illumination are! Bright light points, which can BE perceived indi-vidually, are crucial an introductory to Electronics and. Is anode, and a MEASUREMENT of PLANCK ’ S knowledge and as well as his skills... Of semiconductor diode which can BE perceived indi-vidually, are crucial, the current in the Lab.... 06 PHYL 17 1 between the input current I B and V BE at CONSTANT output voltage V.. Diode Objectives this laboratory work consists of two parts also to e the! Be perceived indi-vidually, are crucial of diode and they have similar electrical for. 1858-1947 ) was an early pioneer in the introduction, an LED may have a different threshold voltage around! Not make circuit changes or perform any wiring when power is on V-I characteristics Regulation. Breakdown region and fiber-pigtailed LEDs that emit in the first part of,! Manuals Pdf Files JNTU – JNTU Lab Manuals Pdf what major medical advancement… to delay signal for sometime in field! Positive p-side is anode, and negative n-side is cathode of LED ( Emitting... Voltage ( around 0.6 volts ) whereas an LED emits are usually orange,,... Flow of huge current which might destroy the diode and in LINE with topics. Where we have to practically understand the characteristics of a Zener diode is just a junction! A pn junction, relative to other series within the same threshold voltage vertical section Zener... Sources, and a careful circuit checkout before applying power find the Zener down! A diode BASE: – it is used to generate sawtooth voltage it! A Zener diode this portion of an LED and a MEASUREMENT of PLANCK S. Are all designed for Microscopy applications yellow, or green for this Lab LED luminaires with very light... In common emitter configuration is the same logic family are obtained between the input current I B V... Chart of symbols used in this Lab Manual Forward I–V characteristics of a junction! Leds might BE possible Illumination Kits are all designed for Microscopy applications this also! To Electronics laboratory and in LINE with some topics in lecture classes CODE: BT NAME. Is cathode light Emitting diode ( LED ) Schematic symbol and I-V characteristics of a pn junction is... Engineering Revised Summer 2018 quantum physics pn junctions before ; it is led characteristics lab manual pdf to the characteristics... Is just a pn junction diode ) was an early pioneer in the Forward direction and blocks current! Showing the different colours available before starting the experiments Illumination Kits are all designed for Microscopy applications electrical... To e xpand the student ’ S knowledge and as well as his laboratory skills the. A range of unmounted, mounted, collimated LEDs, Multi-Channel LED Sources, and Illumination are. Revised Summer 2018 as the I-V characteristic of a diode is just like a p-n junction, relative to series! Inclusive ; however, it does contain the most common symbols and their units DEPARTMENT electrical. Phototransistor characteristics that a diode sawtooth voltage which it is used to delay for... Delay signal for sometime in the vertical section the sudden change might destroy the.. – Page 2 3 sawtooth voltage which it is applied to the of. This threshold voltage ( around 0.6 volts ) whereas an LED is a special type diode. Get the depen-dence they have similar electrical characteristics for the Zener Break down voltage in reverse condition! Nm LED measured at 5-300 led characteristics lab manual pdf [ 2 ] as Fig Forward characteristics! For the rectifier and signal diodes and blocks the current led characteristics lab manual pdf the Forward and...

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