Objectives: To study the characteristics of Zener diode. In our previous articles, we explain in detail about diodes, PN junction diode, semiconductors etc. Do check out – V-I characteristics of PN Junction Diode Lab Report Experiment No- 02 - Objectives To study the characteristics of Zener diode To study the voltage regulation in Zener diode regulation circuit, 3 out of 3 people found this document helpful. We are going to learn about an experiment to find out the Zener breakdown voltage and draw the characteristics of Zener diode.Why should we do this experiment? Observe the nearly constant voltage in the breakdown region. A graph of current through vs the voltage across the device is called the characteristic of Zener diode.The first quadrant is the forward biased region. 2- Principles Zener diodes are semiconductor diodes which are operated in the reverse direction But due to higher doping concentration, higher current flows through the Zener diode.In the third quadrant, the magic happens. - Determining the quiescent point Q(VZ,IZ) - Determining the differential resistance of a Zener diode. A Zener diode 2. Typical diodes have a very high reverse breakdown voltage, the voltage at which the diode begins to conduct in the reverse direction. 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. The circuit was constructed according to Figure- 02. Simulator . Brief Theory: When a reverse-bias voltage is applied to a pn junction, the electric field in the space-charge region is increases. Unlike ordinary PN junction diode, the reverse current in Zener diode is measured using milli-ammeter due to the large flow of current. when the voltage across the zener diode exceeds its zener voltage rating VZ) . The symbol of zener diode is similar to the normal p-n junction diode, but with bend edges on the vertical bar. Forward Characteristics of Zener Diode. The function of R in this circuit is to, safe value so that the diode does not overheat. Which is in A, will follow. We set the DC supply to 0 V and, We set the DC supply (E) to the values appearing in Table- 01 and measured both V, using the Ohm’s law given in the table and. We will learn about the V-I characteristics of Zener Diode and to draw the V-I characteristics graph. Figure 2 shows the current versus voltage curve for a Zener diode. The electric field may become large enough that covalent bonds are broken and, electron-hole pairs are created. The electric field may become large enough that covalent bonds are broken and electron-hole pairs are created. Experiment 7 Zener-Diode Characteristics 1- Objects of the Experiment: - Recording the current-voltage characteristic I Z f(V Z) of a Zener diode. 2. A Zener diode is a special type of diode designed to reliably allow current to flow "backwards" when a certain set reverse voltage, known as the Zener voltage, is reached.. Zener diodes are manufactured with a great variety of Zener voltages and some are even variable. The P type has excess 6. Feedback A Zener diode is a diode which allows current to flow in the forward direction in the same manner as an ideal diode, but will also permit it to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage ... Characteristics of Zener diode.. If the current is not sufficiently limited, a large power can be dissipated in the junction that may, Diodes are intended to operate in the breakdown region. References: • EE 121 Handouts In the reverse bias condition the Zener diode is an open circuit and only a small leakage current is flowing as shown on the exaggerated plot. This was also to e xpand the student’s knowledge and as well as his laboratory skills on the subject. We are going to learn about an experiment to find out the Zener breakdown voltage and draw the characteristics of Zener diode. 1 V-I characteristic of Zener Diode Object: To draw the V-I characteristic of Zener diode and to determine Zener breakdown voltage. Reference . Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. The layer at the junction of ‘P’ type and ‘N’ type. To see the circuit diagram, click on the 'Show/hide circuit diagram' check box seen inside the simulator window. 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