The zener diode working principles and its various. Dec 18, 2018 we hope the cbse sample papers for class 12 physics paper 3 help you. Part of made in india, design innovation workshop,2015 a fresh new experience in project. Physics practical class 12 all study guide at one place. Candidates who are ambitious to qualify the class 12 with good score can check this article for notes. Class 12 practical with solution list knowledge universe online. Physics notes class 12 pdf r k maliks newton classes. V z0 is the voltage at which the straightline approximation of the iv characteristic intersects. The cbse is a prestigious educational board in india that conducts the final examinations for the class 12. Thus, the increase or decrease in the input voltage results in increase or decrease of voltage drop across r s without any change in voltage across the zener diode. In a dc circuit, zener diode can be used as a voltage regulator or to provide voltage reference. The experiment is continued till the milliammeter shows a large deflection while the voltmeter reading remains a constant, indicating the break down voltage. If the input voltage increases, the current through r s and the zener diode also increases.
Draw the reverse characteristics of zener diode and determine its break down voltage. Cbse syllabus ncert syllabus physics class 12 ncert syllabus. Coed school kolar road bhoapl department of physics project report investigatoryproject on pn junction and diodes project report submitted by govind patel submitted to mrs ratna hajela registerationno. These physics lab manual may be freely downloadable and used as a reference book. To make a practical file of any subject, we first have to search all the topics on the internet and book and it takes a lot of hard work and time to create a. A pn junction is said to be forward biased when pregion is connected to positive terminal and n. In reverse bias, a negligible constant current flow through the zener diode but the current becomes abruptly large at certain voltage. Link to download ncert cbse syllabus 20202021 is at the last of the page. A zener diode is constructed for operation in the reverse breakdown region. Link to download ncert based cbse syllabus for class 12 physics is given at the end of this article. Cbse sample papers for class 12 physics paper 6 cbse tuts. Explain zener breakdown and describe the use of a zener diode as a voltage regulator. A zener diode is constructed for operation in the reverse breakdown re gion.
What are some common questions asked in viva in the cbse 12. This video is extremely helpful for understanding the basic concepts of zener diode, how it works and how it is used as a voltage regulator. Zener diode is nothing but a single diode connected in a reverse bias mode and zener diode can be connected in reverse bias positive in a circuit as shown as picture. Dec 21, 2018 students who are going to appear for cbse class 12 examinations are advised to practice the cbse sample papers given here which is designed as per the latest syllabus and marking scheme as prescribed by the cbse is given here. Students are suggested to study the theory and law behind the experiment properly before performing the experiment. Semiconductor electronics important questions for cbse class 12 physics semiconductor, diode and its application 4. The list of experiments include the practicals from physics and truly based ncert physics laboratory manual books. Energy band in a crystal due to interatomic interaction, valence electrons of one atom are shared by more than one atom in the crystal. To draw the iv characteristic curve of the given zener diode in reverse bias.
Zener diode is used as shunt voltage regulator for regulating voltage across small loads. Apr 23, 2020 diode experiment class 12 notes edurev is made by best teachers of class 12. Zener diode voltage regulators s bharadwaj reddy june 3, 2017 december 12, 2018 zener diodes can be used to produce a stabilised voltage output with low ripple under varying load current conditions. Read on to know the key preparation tips to excel in your cbse class 12 physics practical exams. Cbse physics lab manual for class 12 pdf download 10. Please keep a pen and paper ready for rough work but keep your books away. Class12 cbse board zener diode learnnext offers animated video lessons with neatly explained examples, study material, free ncert solutions, exercises and tests. Zener diode has the property of behaving like a dc battery in on state i. Cbse physics class 12 syllabus 20202021 is updated in this website and is available and students can download this syllabus in the pdf format which was give in the later half of this article. Cbse sample papers for class 12 physics paper 3 cbse tuts.
Physics practical file for class 12 pdf download gkpur. Explain briefly, with the help of a circuit diagram, how a pn junction diode works as a half wave rectifier. Exp7 to draw characteristics of a zener diode and to determine its reverse breakdown voltage. Dec 24, 2017 this video is extremely helpful for understanding the basic concepts of zener diode, how it works and how it is used as a voltage regulator. Zener diode symbol zener diode circuit zener diode vi characteristics zener diode working zener diode applications faqs. Feb 01, 2018 to study the characteristics of a zener diode, class 12, physics experiment. To detect one acid and one basic radical salt experiment. The zener diode is a unique sort of diode having a sharp reduce off voltage for the duration of reverse biasing. The course also wraps in itself our experience in successfully training thousands of students in classrooms over a decade. This document is highly rated by class 12 students and has been viewed 212 times. Physics notes class xii as per cbse ncert books chapter wisenotes pdf board level. Physics practical class 12 find out more about the cbse physics practical class 12 syllabus and the other experiments that you need to focus on. Pradeep sir classes presents cbse class 12th physics full course video lectures for students appearing in class 12th. If you have any query regarding cbse sample papers for class 12 physics paper 3, drop.
Why is meterbridge reading used to get values at the middle of the bridge. Cbse notes class 12 physics electronics aglasem schools. Class 12 physics lab manual work ncert study rankers. Cbse syllabus for class 12 physics 20202021 physics book pdf. Feb 29, 2020 cbse class 12 physics syllabus 201920 is available for download in pdf format. A zener diode with small reverse breakdown voltage of about 6 volts, i. Zener diode, voltmeter 02volt, voltmeter 030 volt, miliammeter, micro ammeter, variable source 02 volt and 030 volt.
Cbse ncert notes class 12 physics semiconductor electronics. If you have any query regarding cbse sample papers for class 12 physics paper 3, drop a comment below and we will get back to you at the earliest. Point out the two curve for which the incident radiations have same frequency but different intensities. Breakdown voltage is also known as zener knee voltage. Class 12 cbse board zener diode videos, ncert solutions. To draw the characteristic curve of a zener diode and. Apart from the board exam, the syllabus of cbse class 12 th physics 2020 is also crucial for various national and statelevel entrance exams like jee main, neet, etc. To draw the characteristic curve of a zener diode and to. In this experiment, we try to observe the relation between the voltage and. Zener diode as a voltage regulator working principles.
To draw the characteristic of a zener diode and to determine its reverse breakdown. Paper 6 of solved cbse sample paper for class 12 physics is given below with free pdf download solutions. Cbse physics practical class 12 lab manual learn cbse. The test will consist of only objective type multiple choice questions requiring students to mouseclick their correct choice of the options against the related question number. Voltage regulator using zener diode physics astronomy. At the minimize off voltage, it conducts to large values of cutting. The dc output voltage remains constant when the input varies within the limits as voltage regulator is used. But ordinary pn junction diode connected in reverse biased condition is not used as zener diode practically. Students are able to do the experiment in the real laboratory, once they. This is possible only when you have the best cbse class 12 physics study material and a smart preparation plan. When forward biased, it behaves like a normal signal diode, but when the reverse voltage is applied to it, the voltage remains constant for a wide range of currents. The central board of secondary education cbse will release the cbse physics syllabus 2020 for class 12 th. Zener diode is a silicon semiconductor with a pn junction that is specifically designed to work in the reverse biased condition.
What are some common questions asked in viva in the cbse. Cbse previous year solved papers class 12 physics delhi 2009. The zener diode must have voltage greater than zener break down voltage v z. A junction diode is formed when a ptype semiconductor is in intimate contact with ntype semiconductor. Physics lab manualncert solutions class 12 physics sample papers. Applications of pn diode, class 12 physics ncert solutions. Please comments for any doubts and even comment if u. The physics practicals for class 12 cbse is given here so that students can understand the experiments in a better way. A zener diode is a specially designed, highly doped pn junction diode.
Class 12 cbse physics practical zener diode characteristic. If you also study in class xii and want to download the practical file of physics, then you have come to the right place. Physics investigatory project on zener diode as a voltage regulator 1. Sep 10, 2016 pn junction and zener diode 12 class project slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Zener diode best explanation as a voltage regulator in. Cbse syllabus of class 12th physics 2020 download pdf. Diodes which are designed with adequate power dissipation capabilities to operate in the break down region are called as break down or zener diodes. The figure shows a plot of three curves a, b, c, showing the variation of photocurrent v s. In on state, the voltage across zener diode remains constant until the voltage across it deops less than vz. Experiment zener diode characteristic curve and break down. Huge list of physics project for class 12th experiments, physics projects, science fair projects for physics, working models, astronomy project ideas,physics experiments, exhibition topics free download, expo ideas, cbse class 12 projects, physical science projects x11 for kids and also for middle school, elementary school for class 5th grade,6th, 7th, 8th, 9th, 10th, 11th, 12th grade and high.
Class 12 physics electronics get here the notes for class 12 physics current electronics. If you continue browsing the site, you agree to the use of cookies on this website. Function of zener diode in voltage regulator abstract the strength property which we use may not be capable to grant us normal voltage. A diode can be defined as the fundamental electronic component that allows the flow of electricity in one direction only. This may moreover have an effect on the proper functioning of the digital tool. Students understand the terms zener diode, breakdown voltage, etc.
A zener diode is fabricated by heavily doping both p and n sides of the junction because of heavy doping, a very thin pdf download solutions. To draw the vi characteristic of zener diode and to determine zener breakdown voltage. Cbse practicals for class 12 physics lab manual work list of experiments to be performed for class 12 during practical exams in physics subject. Here you will easily find the practical file notes of physics. Cbse physics lab manual class 12 chapters wise download here in pdf format. To draw the characteristic curve of a zener diode and to determine its reverse breakdown voltage. A zener diode is a heavily doped silicon crystal diode which allows current to flow in the forward direction in the same manner as an ideal diode. Physics investigatory project on zener diode as a voltage. The main use of zener diode lies in the fact that the voltage across a zener diode remains constant for a larger change in current. The vi characteristic of zener diode indicates that characteristic of zener diode in forward bias is same as pn junction diode. Maliks newton classes offers a comprehensive jee correspondence course which is the closest one can get to classroom programme for jee main advanced neet isi preparation.
The breakdown voltage of zener diodes will be constant for a wide range. With the help of a labeled circuit diagram explain the working of full wave rectifier and draw the input and output waveforms. Experiment zener diode characteristic curve and break down voltage 12th cbse. Zener diode is basically like an ordinary pn junction diode but normally operated in reverse biased condition. Voltage regulator using zener diode physics astronomy project topics, physics science fair projects, pyhsical science, astrology, planets solar experiments for kids and also organics physics science ideas for cbse, icse, gcse, middleschool, elementary school for 5th, 6th, 7th, 8th, 9th and high school students for the year 2016. The syllabus for the practical exam is designed by cbse according to the cce guidelines. The students preparing for the class 12 th cbse board exam in science stream should check the syllabus carefully. Jun 17, 2015 physics investigatory project on zener diode as a voltage regulator 1. Dec 24, 2019 class 12 physics electronics get here the notes for class 12 physics current electronics. This syllabus contain the detailed syllabus and course structure, practical, projects and many others this which is related to.
It also permits the current to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage. Jan 21, 2014 exp7 to draw characteristics of a zener diode and to determine its reverse breakdown voltage. Paper 3 of solved cbse sample paper for class 12 physics is given below with free pdf download solutions. The circuit symbol of zener diode is as shown in the figure. Cbse class 12 physics syllabus 201920 is available for download in pdf format. Most prospecting questions in physicsii for cbse2017. Learning does not mean only gaining knowledge about facts and principles rather it is a path which is informed by scientific truths, verified experimentally. This way, zener diode behaves as a voltage regulator. To see the circuit diagram, click on the showhide circuit diagram check box seen inside the simulator window. Zener diode as a voltage regulator working principles byjus.
Zener diode working with circuit diagram and applications. Connections can be made as seen in the circuit diagram by clicking and dragging the mouse from one connecting terminal to the other connecting terminal of the devices to be connected. Zener diode best explanation as a voltage regulator in hindi. Aug 22, 2018 how is a zener diode fabricated so as to make it a special purpose diode. Dec 02, 2016 to draw the characteristic curve of a zener diode and to determine its reverse breakdown voltage. Class12 section contents certificate acknowledgement introduction applications summary bibliography certificate this is to certify that this project has been made by of class xii on zener diode under the guidance of our physics teacher ms and has been completed successfully.
1340 543 880 840 1459 172 758 411 812 1023 557 420 1187 42 914 1481 1122 1354 201 1050 766 1062 1157 1157 66 1280 1408 1474 1412 616 1320 356 1151 11 743 630 358 1479 207 860