When reverse biased voltage applied to the zener diode reaches zener voltage, it starts allowing large amount of electric current. When the input voltage is less than the breakdown voltage (V z), very small current flows through the diode and the whole input appears across the output terminals. When the breakdown occurs in Rectifier as well as Zener diode, it is known as Zener breakdown. A simple circuit involving Zener diode as a regulator requires a resistor of the low value connected in series with the input voltage source. 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. This may moreover have an effect on the proper functioning of the digital tool. The voltage drop across R L is 12 V, V in has values between 20 V and 35 V. The minimum current through R The primary objective of the Zener diode as a voltage regulator is to maintain a constant voltage. Similarly, the current through the diode decreases when the voltage across the diode tends to decrease. Zener Diode checking. It is a system wherein a constant voltage level is maintained either using positive feedback or negative feedback. 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. This silicon semiconductor is designed to function in the condition of reverse bias. 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. Pro Lite, Vedantu Ans. 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. Let’s take the value of R 2 as 1kΩ. When connected in reverse bias in series with a current limiting resistor, the voltage across the zener diode remains constant as long as a certain minimum current flows through it. Here is a link to step by step physics experiment of Zener diode as a voltage regulator and how its made. CO-ED 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 … To have a detailed understanding of Zener diode and its working, you should also read up on the related concepts. This zener diode voltage regulator circuit uses a Zener diode to establish a reference voltage. The primary objective of the Zener diode as a voltage regulator is to maintain a constant voltage. 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