/Type /Page �8�� ���$DQ+!�ZE���@ $QSP�ZU�uP�y��R��T��6�g�Hu��P��Bu&4f��Є:��l���͙?�hAm�VԹT;`�u��vB;�I��A�E�ԅ0���PA'j��pR����P�B7�2X��z2���Ћ����� /Width 258 �(M�`�$,dJ��4fڹ��D� ��SL�)ԙ[؟��s� Knk3 The first quadrant of the V-I characteristics curves shows the forward operation of the diode. When the reverse bias voltage is greater than a predetermined voltage then the Zener breakdown voltage occurs. Further increase in voltage does not increase this current. The junction voltage vs. current characteristic of an LED is similar to the V-I characteristics of diodes. ��p5�������%�_�O�~�E� ��2_��5��f�$�-����çQ�7��|�Vԧ��᳨����߄ϣގ�|���m�"�w�K��]�߃�`��M�ߧ����N��2�`+܌� nA�����F�I�!�ꏨn�[Q��2O�]T�D�O����[�_�S� |�n�.�O�{���gT���H���c�K�@����w��G�~�A�Q�?D} ~�� lG}��섇�.�G���> /Length 1178 The point of beginning or zero value is at the center of the graph. Academic year. ����]�WvL�)�F,�O�ص��`��JX�L�)"���?�`$7�v�d����j2[E�j�*b�3Mԗ�f�“�k�`,���J�2h����e����U,��RGMޟr�jLya�m2.�E�r�PZ���r���`0F�W���O)�~6%�`��P�Ȝ��Ţ�M�(�"EAEZ@������"��Ž�?#� � 22u capacitor (x 1) 5. :���`��2�Oq(`6[$��q�i�%3�lh��b2YL�ED����ex��ܽ���8�� /MediaBox [0 0 595.276 841.89] x���y�]gu/��y8��=�%a�F+vb&.�A�rU�"�}����A�@CyP��JA�.�[!׏ Name Quantity Name Quantity 1 Diode (BY127, OA79) 1(One) No each DC Regulated Power supply (0 - 30 V variable) 1(One) No. This experiment will allow you to visualize the principle of operation of a semiconductor diode, whether current conducts or not. UCSI University. In general, the cathode of a diode is marked by a solid line on the diode.The Zener diode characteristics can be observed. /Contents 4 0 R This is because the resistance is very low in forward biased condition. helpful 4 1. endobj Figure 3 – Current/voltage (I-V) characteristics of a non-ideal diode. However, there is one major difference. /Filter /FlateDecode This voltage is known as the threshold voltage or Knee voltage. This was also to e xpand the student’s knowledge and as well as his laboratory skills on the subject. 1M resistor (x 1) 4. I will refrain from any form of academic dishonesty or deception, such as cheating or plagiarism. 3x���RcsE�����O��0�B�^���ڕ��G G^gt�9n��xLT�-n0����V��ES�[���Ⱥ0r��#�#�?h|��G�cr�O,L��RI�� �+�q�&���l�D¬�f���"2��S=M�@�gZ�ppu���u-2� Measurement of Diode I-V Characteristics An oscilloscope display of the diode I-V characteristic can be Figure 2 – Current/voltage characteristics of an ideal diode. … The symbol of a diode, shown in Figure A-1, looks like an arrow that points in the direction of current flow. Diodes:An ideal diode is a device that allows current to flow in only one direction. 2. (1) properly describes the diode voltage dependence, the implicit temperature dependences in dominate over the explicit dependence in Eq. OBJECTIVE In this lab you will measure the I-V characteristics of the rectifier and Zener diodes, in both forward and reverse-bias mode, as well as learn what mechanisms cause current flow in each region of diode operation. Application of diodes is broad. Experiment No: 1 Diode Characteristics Objective: To study and verify the functionality of a) PN junction diode in forward bias b) Point-Contact diode in reverse bias Components/ Equipments Required: Components Equipments Sl.No. 2 0 obj << Full Wave Rectifier Name: Sanzhar Askaruly ID: 201100549 Date: 17/09/2014 Introduction Diode is an electronic device having conductor at their ends. We use Zener diodes for voltage regulation and voltage stabilisation. /Font << /F16 7 0 R /F17 10 0 R /F27 13 0 R /F15 16 0 R >> Lab IV: Silicon Diode Characteristics – Page 1 LAB IV. This diode either made by silicon or germanium which has atomic number Z=14 or Z=32 respectively. To determine static resistance. >> The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. VB IS I V VT. University of Florida EEL 3111 — Summer 2011 Drs. Q.2 What do you understand by P-N Junction diode? ��y��F}�*�� �;�0< ?E�E�)�9�����C�k����A�-�u7ܓy����{�>�g�~�gaG��G�9x �yx��/�Ù�v��L�x,s?�G}~��{��'P_�'Q�v���B���F}��_�7���3��_a�ߨ�����d�P�'�C}�C���_2�~���W�M�����M�����M����Ԧ�6}?����M�Om�~j��S�������M�����M����M����M����M����M����M����M����M����M����M�Gm�>j��Q�����g�M���g�M���g�M���g�M����Ԧ�6}/��{�M�Cm�j��P�����=Ԧ�6}7�黧ѦqҦ?�ɦ�6}�黨M�Em�.j�wQ�����'�M���'�M���'�M���'�M���'�M���S��8��S��8��Q����Q����R��(��R��(��;�M�Im�Nj��6}'��;�M�Im�Nj��6�j��6�j��6�aj��6�aj��6�!j��6�!j��6�Aj��6�Aj��6}��;�M�Am�j�wP�����Ԧ? /Subtype /Image Components: Equipment: Name Range Forward and reverse current values are shown on the vertical axis of the graph. Diode Characteristics Physics Kids Projects, Physics Science Fair Project, Pyhsical Science, Astrology, Planets Solar Experiments for Kids and also Organics Physics Science ideas for CBSE, ICSE, GCSE, Middleschool, Elementary School … EQUIPMENT … The Zener diode mainly operates in reverse biased condition. Semiconductor Diode Characteristics. I-V characteristics I-V characteristics were introduced in the previous page when introducing Ohm’s law. Share. Observations: Table: 1 Forward Bias Condition: RPS Voltage Vs(volts) Forward Voltage across the diode … /Contents 21 0 R (GET LED wired Red Rectangular 2 x 5 mm 8 mcd), 4. one 1kΩ resistor (GET 1k Resistor) We will be u… However, with further increase in reverse voltage, the current shows a … %PDF-1.4 &sփB�O�[ �h#�9��= E�r,G.�8J�rd���`0F���r���)� 侈����m�`�x��(m6�^���"�o� ����"��žͫ/�Od��1%���O���`��pr��E�( ����ҧ Connect the CRO CH1 across the input and CH2 across resistor. The figure depicted under the section Forward Characteristic shows that Forward Voltage and Reverse Voltage are usually plotted on the horizontal line of the graph. 1N4148 diode (x 1) 2. When forward biased, the positive end of the diode is called the anode, and the negative end is called the cathode. %���� 4 0 obj << S�`G���� k�Vg�������m�%a��R��~t�>g�����Zߚגʲƥ ����`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� ���y��j2.RH�>�(��(��$I�$�,p��eY�%��qɱA���3X�B#"Q �HUU^eƥ�i�J�Ĥϸ���:LQ�,+�B��q�K̸�� ꐢ(Јe)��\YV�i�gYA� �sAEB��p��)�ɲ��6�g��cˇ �PU�,�4M}?�tZAٶ)��_������=�y/zыLSO�l4�%Ij4��E!إ�6����O���/B�y����(l��oi��I 8IE�tZB�6������������Gǩ���f��p�=.I�m�5�=�yϾ}�|�ϲLQ�4�I}� �2p��id c7�=!Ŀ��~�{�����w��[o����n{�[ߚ�e��\y��y^Z��K�6X����j�I�,�xY�7����. endobj The critical parameter of this type of diodes is the Zener breakdown voltage. Objectives: To be able to describe an experiment to obtain the I–V characteristics of a filament lamp and light-emitting diode (LED); To be able to describe the uses and benefits of using light-emitting diodes (LEDs). Related documents. /Length 1321 To draw the V-I characteristics of a pn junction diode in forward bias. However, unlike a resistor, a diode does not behave linearly with respect to the applied voltage as the diode has an exponential current-voltage ( I-V ) relationship and therefore we can not described its operation by simply using an equation such as … October 28, 2020 July 24, 2018 by Electrical4U. Diode Characteristics PurposeThe purpose of this lab is to study the characteristics of the diode. The above experiment could also be used to investigate the variation in resistance of a thermistor as the temperature changes, and the variation in resistance of a light-dependent resistor as the light level is altered. The data were then plotted in V-I. stream /BitsPerComponent 8 x�uVKo�F��W�H�z��ȥM (��C�-�2J�I�j�}籔)[� qvg8�of�R ?�j)��>��.�t�O�g�g.���s����ڔ���z��O}�%I�$�K��3_(�s���*�*)���!UƊ»�:+d�n�o���ʍ1���RY������.�j�����jd��b*۵@�H� ��w��u$؁\5��a|�W���F}��o��?�o�W�.��f�����~�ӈ��~l>���r����2R��:���.RQ (1). This was conducted as an introductory to Electronics laboratory and in line with some topics in lecture classes. >> endobj EET120 Semiconductor Devices Experiment 1: Diode Characteristics By: Matthew Trump Online EET Department ECPI University I pledge to support the Honor System of ECPI. fI���x�'ٓ�b&�S�hh�JhnX�^Vxk���S�W~’��̟B��\�q��%�t7��`0�0 [��R��N�4���y��N�t��3zܺ���[�=5�r԰��" �€sS�"s���'="Uء|����(�Ix�ŝk\g�w���hIn �I��'z@����GR��vO� 2019/2020. �Fh�އ���O�*�� d�U�N�2��[�i�����b�U�x���ئFÕ�l`1�C �Zf�to������ Z!��T�k��t��Ѣ?�.���0��a.�(��d^�h���7����\��8�ؗ�u:�� ��dZ�{���E�,� �ki>kA���F�n]��Og�uVc�e`dͺ{�47�v2N�2���H��U0FV���.=������TNƺw,U����x+�砕��&0�Q �AZ����(yt ���EtY���\�Pa����F7CW���:�J�i^ٌ"�VD��TW��1��������3�N���g�>�&`A�PA��$�P�Tm`E�Q� The Zener diode characteristics will also be studied at. >> endobj # Characteristics of a Zener Diode The above diagram shows the V-I characteristics of the Zener diode behavior. 2. 1 0 obj << >> endobj SILICON DIODE CHARACTERISTICS 1. 3 Theory of experiment The diode is a device formed from a junction of n-type and p-type semiconductor material. Course. CONCLUSION This experiment focuses on the investigation of the basic characteristics of a diode. University. Characteristics of the Diode Lesson 2. In the beginning, by increasing the voltage the current change very slowly but when the voltage reaches 0.7V (for silicon) the current start to change rapidly for a small change. ��S�zE��&0�Q��ٞ�S��Dn��ݔ��8��*Xy^ȍ��� �^��?������G�� ���6��Ǭ���L&�b0���h �YE�"H��,YdI��(��H�%�O�ւ7y�mo2���jnX�P�wˏk$�?�BN���S�yaCnkk6��?E�r�PZ��=6�M`0� YJ�\42�qB֋BF�LO_��b� 6LYx��B�)��B 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. The forward current increases slowly in the beginning and shows a sudden rise at … Give the input as triangular voltage waveform from Function Generator (both positive and negative peaks). To find Zener break down voltage in reverse biased condition. 3 0 obj << The knee voltage of a diode is related to the barrier potential of the material used in the device. /Filter /FlateDecode DZ���!�����x�ذ���,�]:yŔ�ή4��S�J�D�B�4WZ��C���͹�:�8 �J����C�u"�ω&�� h)T�>Q�~��.�7Y")*��IK��5�e8���5Bj�zC >> The graph showing the forward bias voltage and forward current is known as the forward characteristics, and that showing the reverse bias voltage and reverse current is known as the reverse characteristics. Diodes: Experiment Guide Components required for this lab: 1. The forward and reverse current voltage (IV) characteristics of a diode are generally compared on a single characteristic curve. endstream �����*��b�`�l4���l��f�p1�����+��3�� fIkmF�a X�?,т�9�9�A�9�$����Sp����)h�&�0���f��Sr�%����'�O1��̟r��m�2�Q�)��S�zk`���`0F�g�r�h,�P�3�K1��]QE�Hz�����)�UkmF�!G$�F �F���ī��3�ӌM�XD���F�(XEQ /�� 3�ԗA�O+g�D�&�L���)y�f�� /Length 18222 c /Height 318 /Type /XObject Most of the diodes are made from silicon because it can afford high temperature, however, germanium is also used for manufacturing where low voltage drop is required. The forward characteristics of a diode is non linear. Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. 20 0 obj << 1k resistor (x 1) 3. Ans: A diode is a two-terminal electronic component with asymmetric transfer characteristic, with low (ideally zero) resistance to current in one direction, and high (ideally infinite) resistance in the other. Circuit Theory (EE112) Uploaded by. 21 0 obj << Diode characteristics & Design of Rectifier circuits. /DecodeParms << /Colors 3 /Columns 258 /BitsPerComponent 8 /Predictor 10 >> stream VOLTAGE-CURRENT CHARACTERISTICS OF A … Some of thecharacteristics that will be investigated are the I-V curve and the rectification properties. To get breakdown voltage sharp and distinct doping is controlled and the surface … �9n!\�k����g�K! /Parent 17 0 R To draw the voltage-current (V- I) characteristics of the PN junction diode and to determine its knee voltage and forward resistance. Please sign in or register to post comments. /Filter /FlateDecode To calculate static and dynamic resistances of the Zener diode in both forward and reverse biased conditions (before, after break down voltages). For example, the current typically goes down, not up, as the temperature decreases. They are graphical characteristics showing how […] ��B�/QvWR�ԡ�o�m� �0�pu�Q�," �;=勾�װ[OSAS���Щ�Fx�j�y�����g�� Ȩv�PP��o��np�z���E�;����/j�j|��A�a��V@UE�+D!�� The Zener breakdown voltage is the … you tube channel - hari cvm AIM 1. The V-I characteristics of a diode can be forward or reverse. The reverse current shows a … 9V battery with wires, 3. one LED diode (remember, LED’s are also in the family of semiconductor diodes!) It is the reverse saturation current. I t is noted that at a certain reverse voltage, the reverse current reaches its maximum level. _j��?^ӣ�S. �2��հ��� ,E=�e^�Sa9�iTa��D=Ve^�3���ըgB?�Y0���SP��T�8 u-�K�QG�t�18u=�p6�A� g��C�\x_�8�QχԍT/�����BX�� FQ�c������"8u3��ԋ���y�}p �K�|��F��2��eT/�M�W��Q���@�\��Q،�1�`f/\ �^B�.A�8��.E���8�k��n�.G��@�$�O���o����ࣨ���Y��pe�7�9� /Type /Page Voltage-Current Characteristics of a PN Junction Diode . stream /ColorSpace /DeviceRGB 3. Forward Voltage represented to the right and Reverse Voltage to the left. To draw the characteristics means behavior of current in forward and reverse bias of a semiconductor junction diode. Items needed: 1. breadboard (GET Breadboard slidable Total number of pins 840 (L x W x H) 172.7), 2. VK�)�!�����PWJ�:U(�q��(�B� �u��ܩ�n��`0�^q�ˏp̟r�`! S#�F�s� �l �ط@X�H���_�R0��N�2��g�;2����2[3��I��"�pB����Cs��)*����cO-�v�N�MՎ���v�(!7��6Pd��pQYᳱ��h��'�{gJ�UY} ��Č�w���xK�.ò�okc`м I am aware that as a member of the academic community it is my responsibility to turn in all suspected violators of the honor code. The forward characteristics of a diode is non linear. /Resources 2 0 R For the reverse characteristics of the given p-n junction diode, a graph is plotted with reverse voltage along X axis and reverse current along Y axis. 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The cathode is marked on a real diode by a band. endstream To determine the V-I Characteristics of a p n junction diode. /Resources 19 0 R A PN Junction Diode is one of the simplest semiconductor devices around, and which has the characteristic of passing current in only one direction only. Physics Practical Experiment | Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail | Posted On : 27.03.2019 03:36 pm . ;o C���� ��/��~�o���`x C�~*��1,�p�UX6�ᓤNROn]�`�x(�S!�a ��}�2\QL��i\_��c8��Ʋ�d�'�\�ԃ��1����|��|=1�181?���>�����p��bd���ۺ�eXf��a�b�;�s2�0m��zp���e���8��]8�'eq�V���,�Y' ��Ȟ������u�#����I�۵�����o-�;�����E���=8/�����#��}���zc�1��p�v0\�^���8��ݞ�k��p����V���Nt���Ǡ ����`0��`0��`0�c�᧰�P>��^���(t_��0�x�{������A�h��73�3S܋��= �g�s�l�Oa%y���'�g�pY�lN�z����+�1݃�v�1����6�c`���a,6� The measured data shows that, for currents of order 10mA and above, the exponential model for the LED must be modified to include a series resistance of order 5W. �o����b?b�f���,2o$!Tg�*t�6�+�Y�s�޼�PB�*]K5 A�aɃ�3��|]% %-B2��R��cW�0-hK��O+B�kU��J�iE6�Dm�v"��/HaSH�����YT�\Q��Ra���D �~���P̭i_m�y�pf�ވ�Yzekl��229��L�,Q�Ä4Y,� R������Z:�x �4����=�J��e Zener Diode Experiment. Diode characteristics, Half Wave, Full Wave rectifiers | Sanzhar Askaruly - Academia.edu Diode is an electronic device having conductor at their ends. The forward current increases slowly in the beginning and shows a sudden rise at a certain value of forward voltage. 3. 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. They provide a low-cost and no frill method for voltage regulation. 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). To plot Volt-Ampere characteristics of Zener diode. 2 Resistor (1K ) 1(One) … The current flows through the diode from the anode to the cathode. /MediaBox [0 0 595.276 841.89] Because you will do it by yourself, you will better remember this lesson. The principle behind the diode is similar to a valve or a gate, which lets electricity flow only in one direction (Simple English Wikipedia, Diode). EXPERIMENT NUMBER 4 Examining the Characteristics of Diodes . The I-V curve and the surface … semiconductor diode characteristics in X-Y mode that... Studied at - Academia.edu diode is called the cathode is marked on a real diode by a band explicit... Atomic number Z=14 or Z=32 respectively a certain value of forward voltage characteristics curves shows the characteristics... Or germanium which has atomic number Z=14 or Z=32 respectively current in the of! 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