11 stycznia 2021

diode characteristics experiment

The Zener diode mainly operates in reverse biased condition. &sփB�O�[ �h#�9��= E�r,G.�8J�rd���`0F���r���)� 侈����m�`�x��(m6�^���"�o� ����"��žͫ/�Od��1%���O���`��pr��E�( To draw the voltage-current (V- I) characteristics of the PN junction diode and to determine its knee voltage and forward resistance. 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 /DecodeParms << /Colors 3 /Columns 258 /BitsPerComponent 8 /Predictor 10 >> 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. 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. 20 0 obj << Forward and reverse current values are shown on the vertical axis of the graph. # Characteristics of a Zener Diode The above diagram shows the V-I characteristics of the Zener diode behavior. Share. �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����� The data were then plotted in V-I. VK�)�!�����PWJ�:U(�q��(�B� �u��ܩ�n��`0�^q�ˏp̟r�`! The critical parameter of this type of diodes is the Zener breakdown voltage. To calculate static and dynamic resistances of the Zener diode in both forward and reverse biased conditions (before, after break down voltages). Further increase in voltage does not increase this current. %PDF-1.4 For example, the current typically goes down, not up, as the temperature decreases. %���� The knee voltage of a diode is related to the barrier potential of the material used in the device. The V-I characteristics of a diode can be forward or reverse. ����]�WvL�)�F,�O�ص��`��JX�L�)"���?�`$7�v�d����j2[E�j�*b�3Mԗ�f�“�k�`,���J�2h����e����U,��RGMޟr�jLya�m2.�E�r�PZ���r���`0F�W���O)�~6%�`��P�Ȝ��Ţ�M�(�"EAEZ@������"��Ž�?#� The point of beginning or zero value is at the center of the graph. The principle behind the diode is similar to a valve or a gate, which lets electricity flow only in one direction (Simple English Wikipedia, Diode). /ColorSpace /DeviceRGB /MediaBox [0 0 595.276 841.89] The graph showing the forward bias voltage and forward current is known as the forward characteristics, and that showing the reverse bias voltage and reverse current is known as the reverse characteristics. (1). /Subtype /Image x�uVKo�F��W�H�z��ȥM (��C�-�2J�I�j�}籔)[� qvg8�of�R ?�j)��>��.�t�O�g�g.���s����ڔ���z��O}�%I�$�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 /Type /XObject >> /Height 318 When forward biased, the positive end of the diode is called the anode, and the negative end is called the cathode. �9n!\�k����g�K! The symbol of a diode, shown in Figure A-1, looks like an arrow that points in the direction of current flow. 3 0 obj << To determine static resistance. VOLTAGE-CURRENT CHARACTERISTICS OF A … 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. /Parent 17 0 R The forward current increases slowly in the beginning and shows a sudden rise at … I t is noted that at a certain reverse voltage, the reverse current reaches its maximum level. /Length 1178 >> endobj /Resources 19 0 R 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 … (1) properly describes the diode voltage dependence, the implicit temperature dependences in dominate over the explicit dependence in Eq. It is the reverse saturation current. 9 ��2)T�֕�R�jD�&l���2�|����9;`��2�ڞ�:n��N�M�_�w)=`�{ h���Ŕ7T��c�Å����l���_;��|��5�b?�*nAS 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 current flows through the diode from the anode to the cathode. This was conducted as an introductory to Electronics laboratory and in line with some topics in lecture classes. x���y�]gu/��y8��=�%a�F+vb&.�A�rU�"�}����A�@CyP��JA�.�[!׏ 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. jK�����z�;�D�۱����L |�s���J>�( 2�2���/{8 �/Uˎ�Z>��bl��(xq��?���~V�j��6�ؓI�����Pz�h�(�-;Ī��E,�#"����P}t����s�];�J��͑9?xŸ�#cN�~8@� #���`�߱�ȏ͛���X_�� 1�J�M��$�F90uͮ���S��12�����]�B��n�TĬ�&��6�m��ѰE�±˴�L:�*7�z��@@� When the diode is connected in forward bias diode acts as a normal diode. c 1M resistor (x 1) 4. ��p5�������%�_�O�~�E� ��2_��5��f�$�-����çQ�7��|�Vԧ��᳨����߄ϣގ�|���m�"�w�K��]�߃�`��M�ߧ����N��2�`+܌� nA�����F�I�!�ꏨn�[Q��2O�]T�D�O����[�_�S� |�n�.�O�{���gT���H���c�K�@����w��G�~�A�Q�?D} ~�� lG}��섇�.�G���> 2 0 obj << Voltage-Current Characteristics of a PN Junction Diode . To draw the V-I characteristics of a pn junction diode in forward bias. To plot Volt-Ampere characteristics of Zener diode. Please sign in or register to post comments. Items needed: 1. breadboard (GET Breadboard slidable Total number of pins 840 (L x W x H) 172.7), 2. /Filter /FlateDecode /Font << /F16 7 0 R /F17 10 0 R /F27 13 0 R /F15 16 0 R >> When the reverse bias voltage is greater than a predetermined voltage then the Zener breakdown voltage occurs. fI���x�'ٓ�b&�S�hh�JhnX�^Vxk���S�W~’��̟B��\�q��%�t7��`0�0 /Length 1321 @m�j�wP�����Ԧ�Om��Ԧ�Om��Ԧ�Gm�}Ԧ�Gm�}Ԧ�{��ZfәM?al��ޕMr�l���Ml:���J�# �� � ���8Δ���`��f�l2�o���FT�X��`0bq'�bF��̘��1�-��2LX-Y+�������r�(���6�c��F�E�S׊�8%����x�d���r�X�ec*��"Ąo��d�/g�@R$��|r��0��'�++r�-|{�y�\L�����C���)�O1�O�ӌ(�`F`0 Characteristics of the Diode Lesson 2. 9gX�P�0�6r[��{fq�aCi;8_�t7��`0�d�8�墱\�ٔ��rY]�h���rYE�f�� �$�U��;^���Ž[�ܣ�\ �OkmF����À�S. Lab IV: Silicon Diode Characteristics – Page 1 LAB IV. LIGHT EMITTING DIODE CHARACTERISTICS (SAMPLE LAB WRITEUP) John A. McNeill ECE Box 000 March 17, 2004 ABSTRACT This lab investigates the V-I characteristic of a light-emitting diode (LED). [��R��N�4���y��N�t��3zܺ���[�=5�r԰��" �€sS�"s���'="Uء|����(�Ix�ŝk\g�w���hIn �I��'z@����GR��vO� 21 0 obj << This was also to e xpand the student’s knowledge and as well as his laboratory skills on the subject. >> I will refrain from any form of academic dishonesty or deception, such as cheating or plagiarism. The Zener diode characteristics will also be studied at. To find Zener break down voltage in reverse biased condition. /Contents 21 0 R However, there is one major difference. This experiment will allow you to visualize the principle of operation of a semiconductor diode, whether current conducts or not. Semiconductor Diode Characteristics. EQUIPMENT … SILICON DIODE CHARACTERISTICS 1. /Filter /FlateDecode This diode either made by silicon or germanium which has atomic number Z=14 or Z=32 respectively. /Width 258 �Fh�އ���O�*�� d�U�N�2��[�i�����b�U�x���ئFÕ�l`1�C �Zf�to������ Z!��T�k��t��Ѣ?�.���0��a.�(��d^�h���7����\��8�ؗ�u:�� ��dZ�{���E�,� �ki>kA���F�n]��Og�uVc�e`dͺ{�47�v2N�2���H��U0FV���.=������TNƺw,U����x+�砕��&0�Q �AZ����(yt ���EtY���\�Pa����F7CW���:�J�i^ٌ"�VD��TW��1��������3�N���g�>�&`A�PA��$�P�Tm`E�Q� Zener diode characteristics can be observed. They are graphical characteristics showing how […] EXPERIMENT NUMBER 4 Examining the Characteristics of Diodes . Circuit Theory (EE112) Uploaded by. 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 … 1 0 obj << 9V battery with wires, 3. one LED diode (remember, LED’s are also in the family of semiconductor diodes!) To determine the V-I Characteristics of a p n junction diode. Experiment No: 2 ZENER DIODE CHARACTERISTICS AIM: 1. Some of thecharacteristics that will be investigated are the I-V curve and the rectification properties. VB IS I V VT. University of Florida EEL 3111 — Summer 2011 Drs. ��B�/QvWR�ԡ�o�m� �0�pu�Q�," �;=勾�װ[OSAS���Щ�Fx�j�y�����g�� 1N4148 diode (x 1) 2. endobj Comments. ?6dJ�,Z�K4YvɎ)I���o�$��-�h��.�++ҟR�q��g�B�ɭ�6���59�0���r9��%��7��ɦ(^L�o�(�%�/`%v�d�Vr=%���:�Hb�G (GET LED wired Red Rectangular 2 x 5 mm 8 mcd), 4. one 1kΩ resistor (GET 1k Resistor) We will be u… Name Quantity Name Quantity 1 Diode (BY127, OA79) 1(One) No each DC Regulated Power supply (0 - 30 V variable) 1(One) No. In general, the cathode of a diode is marked by a solid line on the diode.The chung chinngee. CONCLUSION This experiment focuses on the investigation of the basic characteristics of a diode. Diode Characteristics PurposeThe purpose of this lab is to study the characteristics of the diode. >> endobj 3. Ȩv�PP��o��np�z���E�;����/j�j|��A�a��V@UE�+D!�� We use Zener diodes for voltage regulation and voltage stabilisation. 3 Theory of experiment The diode is a device formed from a junction of n-type and p-type semiconductor material. The current in the reverse bias is due to the flow of minority carriers. Figure 3 – Current/voltage (I-V) characteristics of a non-ideal diode. The measured data shows that, for currents of order 10mA and above, the exponential model for the LED must be modified to include a series resistance of order 5W. The reverse current shows a … /Type /Page � endstream helpful 4 1. ;o C���� ��/��~�o���`x C�~*��1,�p�UX6�ᓤNROn]�`�x(�S!�a ��}�2\QL��i\_��c8��Ʋ�d�'�\�ԃ��1����|��|=1�181?���>�����p��bd���ۺ�eXf��a�b�;�s2�0m��zp���e���8��]8�'eq�V���,�Y' ��Ȟ������u�#����I�۵�����o-�;�����E���=8/�����#��}���zc�1��p�v0\�^���8��ݞ�k��p����V���Nt���Ǡ ����`0��`0��`0�c�᧰�P>��^���(t_��0�x�{������A�h��73�3S܋��= �g�s�l�Oa%y���'�g�pY�lN�z����+�1݃�v�1����6�c`���a,6� ��S�zE��&0�Q��ٞ�S��Dn��ݔ��8��*Xy^ȍ��� �^��?������G�� ���6��Ǭ���L&�b0���h �YE�"H��,YdI��(��H�%�O�ւ7y�mo2���jnX�P�wˏk$�?�BN���S�yaCnkk6��?E�r�PZ��=6�M`0� YJ�\42�qB֋BF�LO_��b� 6LYx��B�)��B endobj However, with further increase in reverse voltage, the current shows a … The first quadrant of the V-I characteristics curves shows the forward operation of the diode. xڅVɒ�6��W�VY�͖�I�$�De'� Q�HE*\��~�z���꧟u�Щot�Xm:�}��E�~�Xm�V�zK�>����x�+~��eh�����j���z�Q6��mX���j�P:���|��Y���s?N�bi��댌�ITi;[�C��"�~� T-|�R��v��[��C��N�Р8&wL�G�D�Pk�t�ֶ١��3�A,��S�/�t,�e�O�~1��?��%?е��*�w�p3Qy�`;� `��Dr?����k[��#�E\�not���j����C5�xƐ ,Ih@w�9&�p��  �3`����X���Ip�� ����6��F�{0�F.XB�����ػ���/t��A�F cC�?y� �T �~$jhy�I�t Components: Equipment: Name Range The forward current increases slowly in the beginning and shows a sudden rise at a certain value of forward voltage. Forward Voltage represented to the right and Reverse Voltage to the left. /Filter /FlateDecode �(M�`�$,dJ��4fڹ��D� ��SL�)ԙ[؟��s� Knk3 :���`��2�Oq(`6[$��q�i�%3�lh��b2YL�ED����ex��ܽ���8�� 2 Resistor (1K ) 1(One) … They provide a low-cost and no frill method for voltage regulation. ����ҧ The Zener breakdown voltage is the … ]m#-tᣡ���]�R:��|E�.�e�z�{�h�a_u�x�B�ʝXB�I0G������Z���O���Έ�n��Ye����k~�� ��̮=�ӫ��d�X������� 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 /Contents 4 0 R >> endobj The forward and reverse current voltage (IV) characteristics of a diode are generally compared on a single characteristic curve. �35ǣ� ń^�p� ��4.�=��%h����H�?���D�: a���û��������9Ls��lKz���\)��f4�5ܶG��F��l���Lu|�l��c�9�3{d��1x��6�u��?�P;~�J��Ri> 9Ў,4�↘iz������`u�5W���_qgljO��5�ԃT�F����6��'�-�֗q�����8X�:�~�k������5�տ���)W�몴�U�?0��}��dz*Pԃ(����9��4eds�2]��S3���TO#�� �u�vj;������\:��G[z��^j&vh���7��]R��GGS�TC9�밬5���Z���� �5��0HA��C����:�����>,�����S��ލq�yS�khB��tu��(����M8�+���O�����ۮ�T�(ҋ��)&��yb�|��'�1����n�dҠ� >> 2. 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. Full Wave Rectifier Name: Sanzhar Askaruly ID: 201100549 Date: 17/09/2014 Introduction Diode is an electronic device having conductor at their ends. �o����b?b�f���,2o$!Tg�*t�6�+�Y�s�޼�PB�*]K5 A�aɃ�3��|]% %-B2��R��cW�0-hK��O+B�kU��J�iE6�Dm�v"��/HaSH�����YT�\Q��Ra���D �~���P̭i_m�y�pf�ވ�Yzekl��229��L�,Q�Ä4Y,� R������Z:�x �4����=�J��e To get breakdown voltage sharp and distinct doping is controlled and the surface … 2019/2020. The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. stream /MediaBox [0 0 595.276 841.89] Objectives: To be able to describe an experiment to obtain the I–V characteristics of a filament lamp and light-emitting diode (LED); To be able to describe the uses and benefits of using light-emitting diodes (LEDs). Q.2 What do you understand by P-N Junction diode? /Resources 2 0 R S�`G���� k�Vg�������m�%a��R��~t�>g�����Zߚגʲƥ ����`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� f�ـ�`6`0� ���y��j2.RH�>�(��(��$I�$�,p��eY�%��qɱA���3X�B#"Q �HUU^eƥ�i�J�Ĥϸ���:LQ�,+�B��q�K̸�� ꐢ(Јe)��\YV�i�gYA� �sAEB��p��)�ɲ��6�g��cˇ �PU�,�4M}?�tZAٶ)��_������=�y/zыLSO�l4�%Ij4��E!إ�6����O���/B�y����(l��oi��I 8IE�tZB�6������������Gǩ���f��p�=.I�m�5�=�yϾ}�|�ϲLQ�4�I}� �2p��id c7�=!Ŀ��~�{�����w��[o����n{�[ߚ�e��\y��y^Z��K�6X����j�I�,�xY�7����. Connect the CRO CH1 across the input and CH2 across resistor. The junction voltage vs. current characteristic of an LED is similar to the V-I characteristics of diodes. stream 10M resistor (x 1) I. Diodes Overview Diodes are mostly used in practice for emitting light (as Light Emitting Diodes, LEDs) or controlling voltages in various circuits. Related documents. UCSI University. /ProcSet [ /PDF /Text ] The forward characteristics of a diode is non linear. /Length 18222 �2��հ��� ,E=�e^�Sa9�iTa��D=Ve^�3���ըgB?�Y0���SP��T�8 u-�K�QG�t�18u=�p6�A� g��C�\x_�8�QχԍT/�����BX�� FQ�c������"8u3��ԋ���y�}p �K�|��F��2��eT/�M�W��Q���@�\��Q،�1�`f/\ �^B�.A�8��.E���8�k��n�.G��@�$�O���o����ࣨ���Y��pe�7�9� 22u capacitor (x 1) 5. To draw the characteristics means behavior of current in forward and reverse bias of a semiconductor junction diode. �����*��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�� Diode characteristics & Design of Rectifier circuits. 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. 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. ��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? Physics Practical Experiment | Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail | Posted On : 27.03.2019 03:36 pm . 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. 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. /BitsPerComponent 8 Diodes: Experiment Guide Components required for this lab: 1. I-V characteristics I-V characteristics were introduced in the previous page when introducing Ohm’s law. Z=32 respectively the previous Page when introducing Ohm ’ s law LED is similar to the flow of carriers. July 24, 2018 by Electrical4U diodes: experiment Guide Components required for this lab is to the... The V-I characteristics of the diode the diode cheating or plagiarism i will refrain from form. Atomic number Z=14 or Z=32 respectively and negative peaks ) an LED similar! 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