/DecodeParms << /Colors 3 /Columns 258 /BitsPerComponent 8 /Predictor 10 >> 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� The point of beginning or zero value is at the center of the graph. /Parent 17 0 R /Resources 19 0 R :���`��2�Oq(`6[$��q�i�%3�lh��b2YL�ED����ex��ܽ���8�� When forward biased, the positive end of the diode is called the anode, and the negative end is called the cathode. Experiment No: 1 Diode Characteristics Objective: To study and verify the functionality of a) PN junction diode in forward bias b) Point-Contact diode in reverse bias Components/ Equipments Required: Components Equipments Sl.No. Connect the CRO CH1 across the input and CH2 across resistor. VK�)�!�����PWJ�:U(�q��(�B� �u��ܩ�n��`0�^q�ˏp̟r�`! When the diode is connected in forward bias diode acts as a normal diode. This diode either made by silicon or germanium which has atomic number Z=14 or Z=32 respectively. ��B�/QvWR�ԡ�o�m� �0�pu�Q�," �;=勾�װ[OSAS���Щ�Fx�j�y�����g�� &sփB�O�[ �h#�9��= E�r,G.�8J�rd���`0F���r���)� 侈����m�`�x��(m6�^���"�o� ����"��žͫ/�Od��1%���O���`��pr��E�( 4 0 obj << c Related documents. Objectives: To be able to describe an experiment to obtain the I–V characteristics of a filament lamp and light-emitting diode (LED); To be able to describe the uses and benefits of using light-emitting diodes (LEDs). /Type /Page >> In general, the cathode of a diode is marked by a solid line on the diode.The chung chinngee. 2. Voltage-Current Characteristics of a PN Junction Diode . Diodes:An ideal diode is a device that allows current to flow in only one direction. Diode Characteristics Physics Kids Projects, Physics Science Fair Project, Pyhsical Science, Astrology, Planets Solar Experiments for Kids and also Organics Physics Science ideas for CBSE, ICSE, GCSE, Middleschool, Elementary School … �(M�`�$,dJ��4fڹ��D� ��SL�)ԙ[؟��s� Knk3 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. EXPERIMENT NUMBER 4 Examining the Characteristics of Diodes . Forward and reverse current values are shown on the vertical axis of the graph. The first quadrant of the V-I characteristics curves shows the forward operation of the diode. EQUIPMENT … ?6dJ�,Z�K4YvɎ)I���o�$��-�h��.�++ҟR�q��g�B�ɭ�6���59�0���r9��%��7��ɦ(^L�o�(�%�/`%v�d�Vr=%���:�Hb�G 2019/2020. /Length 1321 The V-I characteristics of a diode can be forward or reverse. Ans: A diode is a two-terminal electronic component with asymmetric transfer characteristic, with low (ideally zero) resistance to current in one direction, and high (ideally infinite) resistance in the other. Forward Voltage represented to the right and Reverse Voltage to the left. The current flows through the diode from the anode to the cathode. Circuit Theory (EE112) Uploaded by. [��R��N�4���y��N�t��3zܺ���[�=5�r԰��" �€sS�"s���'="Uء|����(�Ix�ŝk\g�w���hIn �I��'z@����GR��vO� Because you will do it by yourself, you will better remember this lesson. The measured data shows that, for currents of order 10mA and above, the exponential model for the LED must be modified to include a series resistance of order 5W. 21 0 obj << They are graphical characteristics showing how […] Characteristics of the Diode Lesson 2. UCSI University. The forward and reverse current voltage (IV) characteristics of a diode are generally compared on a single characteristic curve. �Fh�އ���O�*�� d�U�N�2��[�i�����b�U�x���ئFÕ�l`1�C �Zf�to������ Z!��T�k��t��Ѣ?�.���0��a.�(��d^�h���7����\��8�ؗ�u:�� ��dZ�{���E�,� �ki>kA���F�n]��Og�uVc�e`dͺ{�47�v2N�2���H��U0FV���.=������TNƺw,U����x+�砕��&0�Q �AZ����(yt ���EtY���\�Pa����F7CW���:�J�i^ٌ"�VD��TW��1��������3�N���g�>�&`A�PA��$�P�Tm`E�Q� VB IS I V VT. University of Florida EEL 3111 — Summer 2011 Drs. stream 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. /Parent 17 0 R I will refrain from any form of academic dishonesty or deception, such as cheating or plagiarism. The junction voltage vs. current characteristic of an LED is similar to the V-I characteristics of diodes. 22u capacitor (x 1) 5. 1k resistor (x 1) 3. /MediaBox [0 0 595.276 841.89] This is because the resistance is very low in forward biased condition. Application of diodes is broad. ��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? 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. 1M resistor (x 1) 4. CONCLUSION This experiment focuses on the investigation of the basic characteristics of a diode. 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. 9V battery with wires, 3. one LED diode (remember, LED’s are also in the family of semiconductor diodes!) >> endobj 20 0 obj << /Filter /FlateDecode 1N4148 diode (x 1) 2. 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. Zener Diode Characteristics in X-Y mode: Adjust CRO TIME/DIV knob in X-Y mode. The critical parameter of this type of diodes is the Zener breakdown voltage. Full Wave Rectifier Name: Sanzhar Askaruly ID: 201100549 Date: 17/09/2014 Introduction Diode is an electronic device having conductor at their ends. endobj fI���x�'ٓ�b&�S�hh�JhnX�^Vxk���S�W~’��̟B��\�q��%�t7��`0�0 To draw the characteristics means behavior of current in forward and reverse bias of a semiconductor junction diode. >> endobj 3 Theory of experiment The diode is a device formed from a junction of n-type and p-type semiconductor material. I-V characteristics I-V characteristics were introduced in the previous page when introducing Ohm’s law. To find Zener break down voltage in reverse biased condition. To draw the V-I characteristics of a pn junction diode in forward bias. (GET LED wired Red Rectangular 2 x 5 mm 8 mcd), 4. one 1kΩ resistor (GET 1k Resistor) We will be u… The forward characteristics of a diode is non linear. 2 Resistor (1K ) 1(One) … Semiconductor Diode Characteristics. 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