please just answer the last column(yes/no) if the zener diode is regulating volt

Question

please just answer the last column(yes/no) if the zener diode is regulating voltage. would really appreciate it if you could explain how to know if it is regulating voltage or not

e unique property of maintaining a desired reverse biased voltage. This mak In this exercise, you are to tabulate the regulating properties of the Zener diode Build the circuit shown in Figure 2. Borrow a IN5226 Zener Diode from the Instructor. CAUTION R,-270 Use a lwatt resistor for Vout IN5226 Cathode 3.1 Volt Zener Current Limit at 300mA Fig 2: Zener diode voltage regulator circuit. Power Supply owerDMM MM Supplyout Hardware:

Explanation / Answer

The Zener diode behaves just like a normal general-purpose diode consisting of a silicon PN junction and when biased in the forward direction, that is Anode positive with respect to its Cathode, it behaves just like a normal signal diode passing the rated current.

However, unlike a conventional diode that blocks any flow of current through itself when reverse biased, that is the Cathode becomes more positive than the Anode, as soon as the reverse voltage reaches a pre-determined value, the zener diode begins to conduct in the reverse direction.

This is because when the reverse voltage applied across the zener diode exceeds the rated voltage of the device a process called Avalanche Breakdown occurs in the semiconductor depletion layer and a current starts to flow through the diode to limit this increase in voltage.

The current now flowing through the zener diode increases dramatically to the maximum circuit value (which is usually limited by a series resistor) and once achieved, this reverse saturation current remains fairly constant over a wide range of reverse voltages. The voltage point at which the voltage across the zener diode becomes stable is called the “zener voltage”, ( Vz ) and for zener diodes this voltage can range from less than one volt to a few hundred volts.

Now According to Given Problem The Zener diode 1N 5226 with rated voltage is 3.1V..so this doiode is having zener voltage of 3.1V . So the diode regulates the voltage above 3.1V..In given table above 3.1v are last two values. So, The doide will starts regulating. those two regulating voltages. remaining all are not.

Answers :

1. No

2. No

3. No

4. No

5. Yes

6. Yes

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