The voltage at this value is the zener breakdown voltage. In this video you will get full experimental information about zener diode and zener diode as voltage regulator. Zener diode, resistors, power supply, multi meter circuit diagram. Zener diode lab viva questions and answers pdf free download. Note down the corresponding input voltage and output voltage and tabulate it.
The zener diode behaves as a voltage regulator because, in the reverse bias condition, it has a relatively flat voltage to current curve. Zener diode as a voltage regulator working principles. To construct a zener diode voltage regulator and measure its line and load regulation. Pdf performance of shunt voltage regulators based on zener. The stabilised output voltage is always selected to be the same as the breakdown voltage v z of the diode. By doing this experiment, we can find out the zener breakdown voltage in a. Zener diode experiment viva questions with answers characteristics mcqs interview questions. Study of zener diode as a voltage regulator free download as pdf file.
Zener diode, resistor, variable dc power supply, milliammeter. We present the results from a screening experiment to identify significant parameters in circuit level seu simulations. For example, we want that the voltage across a load in our circuit does not exceed, lets say, 12 volts. The performance of zener voltage regulator was evaluated under a wide temperature range from 300. To setup and study a zener diode shunt regulator and to plot its line and load. We should select a zener diode with a breakdown voltage approximately equal to the voltage we need across the device. Change the rheostat value from maximum to 0 by the interval 100. The zener diode provides the voltage reference, and the base to emitter voltage of the transistor is the control voltage. In this part, limiting circuit is described in figure 1 above. It works in such a way the reversebiased can also work in breakdown condition. Different zener diodes have a different breakdown voltage. Zener diode is a pn junction diode specially designed to operate in the reverse biased mode. The input voltage comes from a rectifier and has a ripple that ranges between 8. Zener diode as voltage regulator tutorial electronicstutorials.
There is a series resistor connected to the circuit in order to limit the current into the diode. The zener voltage regulator consists of a current limiting resistor r s connected in series with the input voltage v s with the zener diode connected in parallel with the load r l in this reverse biased condition. Zener diode as voltage regulator experiment youtube. Zener diode has the property of behaving like a dc battery in on state i. While doing the experiment, do not exceed the rating of the diode. The exciting part of this diode is that we can choose the zener diode with a suitable breakdown voltage to work as a voltage regulator in our circuit. Study of zener diode as a voltage regulator diode volt scribd. Fix the load resistance value by using load resistance slider.
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