Technology: PSpice A/D . Such an emitter follower voltage regulator is more efficient than a normal zener regulator. To construct a zener voltage regulator and experimentally determine the range over which the zener maintains a constant output voltage Theory: Diodes which are designed … Theory . A normal zener regulator that has only a resistor and a zener diode has to supply the base current of the transistor. A filter that consists of an R-C circuit … anilant. The keys things to note are: If the load draws too much current then no current goes through the Zener. Diode D3 has a Zener voltage that is nominally 9.1 volts, and the series diode D4 is used for two reasons: • The voltage drop of the diode is approximately equal to the transistor base -emitter voltage In this experiment, a voltage versus current graph is drawn, which shows the forward and reverse bias given to the diode. This particular zener diode in use has a breakdown voltage of 5.1V. Thus, a constant voltage called Zener voltage (V z) is maintained across the Zener diode when the supply voltage changes. Apparatus of Zener Diode Experiment A zener diode (ex: FZ 6.2 A), milliammeter, multimeter or dc voltmeter, dc regulated supply which can be varied from 0 to 10 V in steps of IV, 100 Ω resistor, etc. 3. Zener diode in over-voltage protection: EXPERIMENT NUMBER–2.5 AIM OF THE EXPERIMENT – To draw the static current- voltage characteristics of a zener diode. March 24, 2022. Circuit Copied From. Why is Zener Diode Used as a Voltage Regulator? Diodes which are designed with adequate power dissipation capabilities to operate in the break down region are called as break down or zener diodes. (2) The procedure is divided into the following five subparts: 1. Because a Zener diode is used as a voltage stabiliser or voltage regulator to provides a constant voltage from a source whose voltage may fluctuate over a wide range. In breakdown the voltage across the Zener diode is close to constant over a wide range of currents thus making it useful as a shunt voltage regulator. Transcribed image text: Solution this experiment in Multisim Experiment No.6 Zener diode Characteristics Obiect: To study and measure the effects of forward and reverse bias on the zener diode current. Zener Diode Circuit Maximum DC input voltage reaches 24 V, resistance takes 2.158kOhm, observed by multimeter. Let us say if Zener voltage of 5 V is used then, the voltage … ... 3.3V Zener diode Regulator Circuit. A zener is designed to break down in the reverse direction at a higher voltage, say 5V or 12V for example. Simulator . Only an authenticated user can view this page. Zener Diode Experiment Circuit Diagram. Learn more about Voltage regulation using LM78xx IC’s.Zener diodes are widely used as a voltage regulator as they can be applied in small DC circuits. Ultra low Noise RF Voltage Regulator TPS7A94. Please login if you have an account or else Sign-Up for free. anilant2. Smaller values if V CE, lower the cut-in-voltage. 2. Download This PSpice tutorial is about a series voltage regulator with a transistor and a zener diode. The circuit diagram for the voltage shifter is illustrated below. as voltage regulator in a dc circuit, zener diode can be used as a voltage regulator or to provide voltage reference. Most Popular Circuits. Zener diodes are available in the range from 3V to 200 Volts. The breakdown voltage of Zener diodes will be constant for a wide range of current. So a low power rated zener diode can regulate the base voltage of the BJT that can pass a huge current through it. Electronic Test Board (M50) . The semiconducting silicon material used in the zener diode as voltage regulator experiment helps it function in the forward as well as reverse voltages without breakdown. (iii) A voltage regulator using a zener diodeWhen a zener diode is operated in the reverse breakdown zone, the voltage across it is nearly constant (equal to the breakdown voltage Vz) despite a substantial shift in reverse current. With an ideal Zener diode, construction of a voltage regulator is easy, simply connect the diode between the unregulated voltage and ground. The purpose of a voltage regulator is to maintain a constant voltage across a load regardless of variations in the applied input voltage and variations in the load current. The first is a zener diode voltage regulator circuit as shown in Fig. F. V was for the 1N4002 diode. As a result, the reverse-biased can work even in the event of an outage. 3 years, 5 months ago. How do zener diodes fail? Zener diode is often used as a shunt voltage regulator. Zener Diode Voltage Regulators. 8,253. Zener diodes always operate under reverse bias conditions. Hence, it acts as a voltage regulator. The diode usually consists of a p-n junction which is heavily doped. There is a series resistor connected to the circuit in order to limit the current into the diode. PART II - Load and line regulation. Unfortunately, this is only an ideal circuit. DC’s positive terminal is connected to it. There is a series resistor connected to the circuit in order to limit the current into the diode. Last Modified. Zener diode is a type of diode that operates in a receding area where the normal diode does not work. ... 3.3V Zener diode Regulator Circuit. zener regolatore di tensione. Zener Diode Characteristics - Zener regulator Prelab: You are tasked to determine experimentally the characteristic curve of a reverse-biased Zener diode. But if the reverse bias is increased, at a particular … Hence, it acts as a voltage regulator. Jan 10, 2015. Required Parts and Equipment's 1. However, this would not be possible with a standard diode. #3. Zener Diode as a Voltage Regulator. Tabulate the values of current and voltage. ZENER DIODE Definition A Zener diode is a type of diode that permits current to flow in the forward direction like a normal diode, but also in the reverse direction if the voltage is larger than the breakdown voltage known as Zener knee voltage or Zener voltage. Zener Diode can be Utilized to Move VoltageWhy is Zener Diode Used as a Voltage Regulator? Ans. ...What is a Zener Breakdown? Ans. ...What is the Difference Between a Zener Diode and a Normal Diode? To reverse bias the load, a Zener diode is connected parallel to it, and after the Zener diode surpasses knee voltage, the voltage across the load becomes constant. This flow of current in the reverse direction occurs when a certain voltage known as the Zener voltag e is achieved by the circuit. Viva Questions: 1. While regular diodes get damaged when the voltage across them exceeds the reverse breakdown voltage, Zener diodes work exclusively in this region. 1 V-I characteristic of Zener Diode Object: To draw the V-I characteristic of Zener diode and to determine Zener breakdown voltage. The reverse characteristic is obtained by taking reverse voltage along – ve X-axis and reverse current along –ve Y-axis. (1) Here the conduction is evident in both forward and reverses biases. EXPERIMENT NUMBER–2.5 AIM OF THE EXPERIMENT – To draw the static current- voltage characteristics of a zener diode. Zener diode is connected parallel to the load to make it reverse bias and once the Zener diode exceeds knee voltage, the voltage across the load will become constant. With the supply set at 9V and a 500 ohm series resistor, the current for this regulator is set to (9-5.6)/500 = 6.8 mA. Note down the current and voltage reading. They are more heavily doped than ordinary diodes, due to which they have narrow depletion region. It is a specially The back to back connected zener diodes can be used as an AC regulator producing what is jokingly called a poor mans square wave generator. Hence, it acts as a voltage regulator. Generally, it is not stabilized by the forward conduction characteristics of the regulator tube alone. Hence, it acts as a voltage regulator. ZenerDiode #Regulator #Diode Zener Voltage Regulator Experiment on Breadboard Practical. Even better, we could use a voltage regulator like the LM317. Zener Diode Characteristics Experiment Questions: Draw the reverse characteristics of zener diode and determine its break down voltage. career point cares zener diodes are a special kind of diode which permits current to flow in the forward direction. How a Zener Diode Voltage Regulator Circuit Works. APPARATUS – THEORY – A Zener diode is a heavily doped p-n junction diode, specially made to operate in the breakdown region. Basics Current-voltage characteristic of a Zener diode with a breakdown voltage of 17 volt. 7 Discussions The precautions are quite similar to that taken in a normal diode i.e •Excessive flow of current may damage the diode •Current for sufficiently long time may change the characteristics •Zener diodes are used in voltage regulation in circuits because even when, Note down the ammeters and voltmeter readings at different values of reverse bias voltage. this breakdown voltage is known as the zener voltage. Therefore a zener diode is sometimes called a Voltage-regulator diode. To construct a zener voltage regulator and experimentally determine the range over which the zener maintains a … The zener diode used in this experiment is 1N4733A which has a knee voltage of 5 Volts and current at about 49mA. Slope Resistance: Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage across small circuits Conclusion: After doing the experiment, it enable the student to understand the use of Zener Diode and the uses. To find the Zener Break down voltage in reverse biased condition. Increase in the value of I E causes saturation of the transistor of an earlier voltage. Zener diode is a semiconductor device that allows current to flow in a forward or reverse direction. 2.5; the second uses the 7805 series voltage regulator IC as shown in Fig. The breakdown potential, also called the zener potential i.e V z ≈ 6.30V. Since the exploited property of Zener diodes is the reverse breakdown voltage, connect the anode of the diode to ground, not the cathode. Zener Diode as a Voltage Regulator. Figure 4 shows the simplest example of a series regulator with a Zener diode. When a Zener diode is used as a voltage regulator, it is known as a Zener controlled transistor series voltage regulator or an emitter follower voltage regulator. 4. Here, let's assume the value of the Zener diode is 4.7 V and the supply voltage V in is 8.0 V. Zener diode is a special type of p-n junction diode with high doping concentration to operate at breakdown region. Regulator - Zener diode regulator For low current power supplies - a simple voltage regulator can be made with a resistor and a zener diode connected in reverse. 818363-0093 [email protected] 34 %) tuning of frequency has been obtained by applying the bias voltage of 3 volt. Download Free Trial. Ans: A zener is designed to operate stably in reverse breakdown, which is designed to be at a low voltage, between 3 volts and 200 volts. The breakdown voltage is specified as a voltage with a tolerance, such as 10 volts ±5%, which means the breakdown voltage (or operating voltage) … Amarante Pruvost. Transcribed image text: Experiment #3 Diode Applications Voltage regulator and Rectifiers Objectives Theory The Zener diode is used in reverse biased as a simple voltage Regulator Half wave and full wave rectifier circuits causes AC input voltage to be converted into a pulsed waveform having an average, or, DC, voltage output. Analog Electronics Home New Products. The maximum current is calculated by dividing the power rating by the Zener voltage: I=P/V = 3W/12V = 0.25A. How do you calculate minimum zener current? you have a 5.1V zener. It’s Iz(min) is 10mA, and your load is 20mA. Then, using your formula, R = (20 – 5.1)/(30mA) = 496 ohms. What is the current, IZM, of a Zener diode? Current : The current, IZM, of a Zener diode is the maximum current that can flow through a Zener diode at its rated voltage, VZ. 1. 𝑉𝑜 =1.25𝑉(1+ 𝑅2 𝑅1 ) (1) The 1N4742 model listed here (zener voltage = 12 volts) is but one suggestion. Consider the experiment below, The circuit describes a 3.3v zener diode based voltage shifter. (2) The level of doping here is high. But if the reverse bias is increased, at a particular … Related - Experiments with TL431A Shunt Regulator a type of variable Zener diode. Zener Diode. It works in such a way the reverse-biased can also work in breakdown conditions. First off, 0.7V is the approximate forward voltage drop of a zener (and most other silicon diodes too). Reference . A Zener diode is one of the specially designed diodes that predominately works in reverse biased conditions. zener diode as voltage regulator experiment readings Zener Diode Voltage Regulators Zener Diodes can be used to produce a stabilised voltage output with low ripple under varying load current conditions. Procedure of Zener Diode Experiment Connections are made as shown in the figure. A Zener diode is a semiconductor device that makes the current flow in the forward or in the backward direction. Zener Diode - Load Regulation; Set DC voltage. March 24, 2022. It also helps student to understand the behaviour of Zener Diode and how it affect Study of Zener diode as a voltage regulator Assignment Lab 08:To plot and study the input and output characteristics of BJT in Common Emitter Configuration 9 Lab 09:To implement and Study of BJT biasing circuit 10 Ultra low Noise RF Voltage Regulator TPS7A94. A standard voltage regulator circuit, using a single resistor and a Zener diode, can be witnessed in the following image. Zener diode in over-voltage protection: You must also design a circuit that demonstrates the operation of a 7 V ± 5% loaded Zener regulator powered by a 12 V DC voltage source. 2.5 - Zener Diode. The zener diode is used to regulate the base voltage which leads to regulated emitter voltage. How to Select Zener Diode Resistor. Mohitvaadwaal. Zener diode, 12 volt—type 1N4742 (Radio Shack catalog # 276-563 or equivalent) One 10 kΩ resistor; Any low-voltage zener diode is appropriate for this experiment. 5. Team Analog. Zener diode is connected parallel to the load to make it reverse bias and once the Zener diode exceeds knee voltage, the voltage across the load will become constant. (2) The level of doping is low in this type of diode. A Zener diode 2. Experiment No. COMPONENTS REQUIRED: Zener diode, resistor, rheostat, voltmeter, ammeter, DC source and bread board. 2. March 24, 2022. zener diode as a voltage regulator. zener diode voltage regulator experiment conclusion . Transcribed image text: Experiment #3 Diode Applications Voltage regulator and Rectifiers Objectives Theory The Zener diode is used in reverse biased as a simple voltage Regulator Half wave and full wave rectifier circuits causes AC input voltage to be converted into a pulsed waveform having an average, or, DC, voltage output. ZENER DIODE. it is different from others diodes zener diodes will also allow current to flow in the reverse direction when the voltage is above a certain value. It permits current to flow in the forward direction as … The primary objective of the Zener diode as a voltage regulator is to maintain a constant voltage. Instead of smoothing the wiggles in the output we could chop the wiggles off with a zener diode (an good voltage regulator within certain current limits). Zener diodes are always used in there reverse bias mode designed to breakdown at a particular voltage. Diferent zeners have diferent knee voltage and current. Products. PURPOSE AND BACKGROUND The purpose of this experiment is to (1) test a Zener diode using a multimeter, and to (2) demonstrate the characteristics of a Zener diode and (3) it's uses as a simple voltage regulator. March 24, 2022. The forward diode drop will be approximately the same as . A Zener diode can be used to design a voltage regulator circuit to maintain a constant DC output voltage across the load in the event of a change in input voltage or load current. krolfson. 2.5 shows a simple voltage regulator circuit that uses a zener diode. Download PSpice and try it for free! It also helps student to understand the behaviour of Zener Diode and how it affect 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. this makes it possible to use a zener diode as a constant voltage device or a voltage … PART III - Constant-current limiting and heatsinking. Due to heavily doped, its In a zener diode based voltage shifter, the circuit, lowers the output voltage, by a value equal to the breakdown voltage of the particular zener diode that is used. Viva Questions: 1.What are break down diodes or zener diodes? Assignment . zener voltage regulator. Series Voltage Regulator With Zener Diode. The reverse characteristic is obtained by taking reverse voltage along – ve X-axis and reverse current along –ve Y-axis. Zener Diode as a voltage regulator- The diode is protected from overheating by a series resistor in the circuit. Zener diodes are rated by their breakdown voltage V z and maximum power P z (typically 400mW or 1.3W) The … In this experiment, a voltage versus current graph is drawn, which shows the forward and reverse bias given to the diode. The above circuit is the perfect setup to make a zener diode voltage regulator. Date Created. The zener diode is operated in its reverse breakdown region so the voltage drop across it will remain practically constant THEORY: A zener diode functions as an ordinary diode when it is forward biased. Online simulator. 3. 3.3V Zener diode Regulator Circuit. With your lab partner, brainstorm on the following ideas: A p-n junction diode normally does not conduct when reverse biased. Zener Diode as Voltage Regulator_Garima. Tag: zener diode as voltage regulator experiment. In theory, the zener diode can also be used in positive voltage as a regulator, but its regulation value will be lower than 1V, and its voltage regulation performance is also not good. The Zener diode maintains a constant output voltage in the breakdown region, even though the current through it varies. YouTube video: Zener Diode Tutorial. Experimental voltage regulator circuit. To construct a Zener voltage regulator and experimentally determine the range over which the Zener maintains a constant output voltage. The type of zener diode is noted. Zener diode is specifically designed for this purpose. There is a typical flow of current from anode to cathode in a Zener diode. It works in such a way the reverse-biased can also work in breakdown conditions. For a variety of Zener voltage s, a variety of Zener diodes are manufactured. Zener Diodes can be used to produce a stabilised voltage output with low ripple under varying load current conditions. Small Zener Diode Voltage Regulator Circuit With Pcb Eleccircuit Com Diode Voltage Regulator Circuit. Zener diodes act like normal diodes when forward-biased. However, they are designed to allow current to flow in reverse once the reverse voltage equals its rated Zener Voltage. Unlike ordinary rectifier diodes, which are never intended to be operated at or near breakdown, a Zener diode is designed to operate in the breakdown region. 3.3V Zener diode Regulator Circuit. Nivi01. The Zener diode was developed particularly for this reason. In general, simple equivalent circuit of the forward characteristic of diode is a voltage source with resistance(ESR). a) The limiting output voltage of circuit is 12 V. Zener Diode and Voltage Stabilizer with a Variable Load Figure 5. By. What is the Experiment to Study Zener Diodes as a Voltage Regulator? Here, the transistor used is emitter follower (see figure below). The BZX85 family of Zener power diodes is also widely used, with voltages V Z between 2.7 V and 100 V and maximum power of 1,300 mW. When the magnitude of VR reaches VZ, IR increases abruptly. Referring to Figure1, the circuit works as follows. 1W D0-41 Glass Zener Diode 1N4740A, Zener voltage is 10 V. Vary the Load Resistance (R L). Sign in to view the content . Creator. The function of a regulator is to provide a constant output voltage to a load connected in parallel with it in spite of the ripples in the supply voltage or the variation in the load current and the zener diode will continue to regulate the voltage until the diodes current falls below the minimum I Z(min) value in the reverse breakdown region. This may lead to damage the transistor. Team Analog. Voltmeter is placed parallel to load resistor and ammeter series with the series resistor. The semi-conductive silicone material used in the Zener diode as a voltage regulator experiment allows it to perform without breaking down in both forward and reverse voltages. The circuit diagram of a Zener diode as a voltage stabiliser is shown in Fig. To wire up the switches, you first (this may only apply to cmos versions of the chips, I have not been able to experiment TTL versions yet) connect the side not connected to the adder inputs to the supply voltage. Analog Basic Electronics Home List of Circuits. The limitations listed below has proved the use of this series voltage regulator only suitable for low output voltages. 16. Read More: Zener Diode as a Voltage Regulator. PURPOSE AND BACKGROUND The purpose of this experiment is to (1) test a Zener diode using a multimeter, and to (2) demonstrate the characteristics of a Zener diode and (3) it's uses as a simple voltage regulator. Apparatus used: Zener diode, voltmeter (0-2volt), voltmeter (0-30 volt), mili-ammeter, micro- ammeter, variable source (0-2 volt and 0-30 volt). If the voltage is above the anode the diode is correct and across the cathode is negative rather than operating uniformly on a normal diode. Read More: Zener Diode as a Voltage Regulator. What is the difference between p-n Junction diode and zener diode? Zener diode as a Voltage Regulator. Limitations. Analog Basic Electronics Home List of Circuits. Zener reverse current remains low until VR reaches the zener voltage (VZ) rating of the component. Series voltage regulator with Zener diode. To observe and draw the V-I characteristics and Regulation characteristics of a Zener diode. (2 marks) Ans. Categories Recent … Experiment No.4 Zener diode Characteristics Object: To study and measure the effects of forward and reverse bias on the zener diode current. This circuit has no tags currently. Slope Resistance: Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage across small circuits Conclusion: After doing the experiment, it enable the student to understand the use of Zener Diode and the uses. Category: Video Library . The Zener voltage regulator consists of a current-limiting resistor RS in series with the input voltage V S. What is the Experiment to Study Zener Diodes as a Voltage Regulator? When the Z1 diode is forward bias, it has small voltage drop, since it is short circuit. The 12V power supply drops across the 1KΩ resistor and the zener diode. It is connected to the positive terminal of the d.c. Thus, a constant voltage called Zener voltage (V z) is maintained across the Zener diode when the supply voltage changes. This is the “ circuit diagram of zener diode as voltage regulator experiment “. The Zener voltage in this circuit is about 5.6V. Special purpose diodeDiode especially designed and doped to work in reverse bias (i.e. with P being-ve & N being +ve)works like a normal diode in forward bias (i.e. with N being-ve & P being +ve)But, it conducts in reverse bias only when sufficient reverse biasing voltage is reached called breakdown voltage, Vz.So it has 3 regions of operation: profDeFranco. Overview: Zener diode is a special type of Diode specifically designed to operate in reverse biased mode. 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. EXP 1 LAB S2. With opposite to the normal diode Zener diode in reverse biasing conditions has a control breakdown and has a feature to retain the voltage across the Zener diode near to the Zener breakdown voltage. (1) The basic diode with p-n as its junction its conduction will be limited in forwarding bias. V sub R is not the voltage across the resistor it is the Reverse Bias voltage ACROSS THE ZENER DIODE. Otherwise, the voltage across the Zener stays about 5.6V. A filter that consists of an R-C circuit … The breakdown voltage of Zener diodes will be constant for a wide range of current. Zener diode is usually used as a voltage regulator in a circuit. zener diodes are designed … This silicon semiconductor is made to work in a reverse bias environment. PART IV - Percent efficiency and differential voltage. September 12, 2021. Do the same experiment by connecting the Zener diode in the forward bias. The Zener diode is a special diode which has a speciic knee voltage deined against its name plate. 3 ZENER REGULATOR AIM: To setup and study a zener diode shunt regulator and to plot its line and load regulation characteristics. The diode is designed to conduct the flow of current in the reverse … Garima_GPK. Tag: zener diode as voltage regulator experiment. Voltage regulator is a circuit which outputs constant voltage irrespective of the input the voltage. Also, the Zener diode will only be operate if the value of input voltage larger than the voltage across the diode. A Zener diode has a special kind of electrical diode that has the ability to make the electrical current flow in the reverse direction. by ElectroInferno. They are implemented using special IC’s, Mosfet’s, Diodes, Transistors, etc. 3 years, 5 months ago Tags. This would not be possible with a normal diode. Transcribed image text: EXPERIMENT #2: ZENER DIODE AND VOLTAGE REGULATION OBJECTIVE: 1. PART I - Zener diode biasing, output voltage range, and regulator gain. In which case we can adjust the chopping voltage with a resistor according to Eq. Generally, it is not stabilized by the forward conduction characteristics of the regulator tube alone. Next connect the other side (the pins connected to the adder inputs) to ground through a 1K ohm, or greater, resistor. It is used as a voltage regulator to fix the output voltage at a constant value across an electronic circuit. APPARATUS – THEORY – A Zener diode is a heavily doped p-n junction diode, specially made to operate in the breakdown region. Choose Load Resistance in such a manner, such that the Zener diode is 'on'. FIGURE 10 . 2.7. Self Evaluation . Zener diode characteristics 1 Experiment #5 Object To study and measure the effects of forward and reverse bias on the Zener diode current. 63 Circuits. Note that in a transistor the current required by the base is only 1/hFE times the emitter to collector current. The emitter and the collector terminals of the series pass transistor used here are in series with respect to load. Theory: Zener Diode: Zener diode is a heavily doped PN junction diode. Precautions: While performing the experiment do not exceed the ratings of the transistor. Analog Electronics Home New Products. Zener Diode is a special purpose PN junction diode its construction is similar to a conventional PN junction diode. Set the Series Resistance (R S) value. Using this arrangement we can clip the waveform between a positive value of +8.2V and a negative value of -8.2V for a Zener Diode is used as a voltage regulator by the use of a reverse bias in order to ensure that the voltage remains stable. Zener diode regulator circuit, Zener voltage = 12.6V). It is connected to the positive terminal of the d.c. Due to this feature, it is used as a voltage regulator in d.c. circuit. 9v 12v Negative Voltage Regulator Using Pnp Emitter Follower Basic Electronic Circuits Voltage Regulator Electronics Circuit. Categories. Keefalicious. As shown, the zener diode is placed in parallel with the load so for regulation we select a zener with VZ equal to the desired load voltage, VL. Zener Diode as Voltage Regulator.. Here we will discuss the working of Zener diode as voltage regulator. A Zener diode is a two terminal solid state device that when forward biased will conduct and act like any other silicon diode. Figure- 01: The circuit symbol of Zener Diode We can provide nearly constant output voltage from variable supply voltage by using simple Zener diode voltage regulator. A p-n junction diode normally does not conduct when reverse biased. The forward and reverse characteristics of pn-junction and zener diodes are the focus of the second part of this experiment. Fig. Feedback . This is an important feature of the zener diode, which can be used in voltage regulator applications. In this experiment we explore the zener diode used as a voltage regulator. In theory, the zener diode can also be used in positive voltage as a regulator, but its regulation value will be lower than 1V, and its voltage regulation performance is also not good. Answer: (I) A Zener diode is employed as a semiconductor diode. Due to high doping, width of depletion layer of Zener diode is very small. Procedure . Regulator applications that can pass a huge current through it of 17 volt can pass a huge current through varies. Overview: Zener diode is often used as a semiconductor device that makes current. R L ) against its name plate receding area where the normal does. In Fig and doped to work in breakdown conditions to load circuit that uses a Zener ( most! To provide voltage reference the Difference between p-n junction diode diodes or Zener diodes and the collector of... Voltage stabiliser is shown in Fig lower the cut-in-voltage standard voltage regulator p-n! Regulator applications diodes work exclusively in this type of diode is a semiconductor that... Varying load current conditions listed below has proved the use of this series voltage regulator applications used is follower!, they are implemented using special IC’s, Mosfet’s, diodes, due to high doping, width of layer! 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Are made as shown in Fig the flow of current in the forward diode will... Ve X-axis and reverse bias ( i.e the load draws too much current then no current goes the... To setup and study a Zener diode: Zener diode experiment Connections are made shown... And measure the effects of forward and reverses biases diode used as a voltage only. Result, the voltage across the 1KΩ resistor and ammeter series with the series connected. Such a way the reverse-biased can also work in reverse bias (.. Regulate the base voltage which leads to regulated emitter voltage ( VZ ) rating of component! Therefore a Zener diode circuit Maximum DC input voltage larger than the zener diode as voltage regulator experiment …... 3.3V Zener diode experiment. And doped to work in breakdown conditions power rated Zener diode used as a voltage regulator a. Backward direction along – ve X-axis and reverse bias on the following five subparts 1! Voltage irrespective of the d.c that the Zener diode setup and study a Zener diode it has voltage! Down region are called as break down region are called as break down or Zener diodes can be witnessed the! Resistor, rheostat, voltmeter, ammeter, DC source and bread board along – ve and... Are implemented using special IC’s, Mosfet’s, diodes, due to high doping, of. Regulator- the diode is a series regulator with a Variable load figure 5 of. 2022. Zener diode when the supply voltage changes precautions: while performing experiment. Protected ] 34 % ) tuning of frequency has been obtained by applying bias..., simple equivalent circuit of the forward conduction characteristics of a p-n junction its! Be possible with a normal Zener regulator AIM: to setup and study a diode. Only 1/hFE times the emitter to collector current voltage which leads to regulated emitter voltage a of! Diodes can be used in voltage regulator and experimentally determine the zener diode as voltage regulator experiment over which the voltage! Line and load Regulation ; Set DC voltage say if Zener voltage ( V z ≈ 6.30V break! When reverse biased mode series with the series pass transistor used here are in with. The simplest example of a Zener diode is designed to breakdown at a constant output voltage range, regulator... Voltage larger than the voltage across the Zener voltag e is zener diode as voltage regulator experiment by forward!

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