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How To Use Zener Diode As A Voltage Regulator
How To Use Zener Diode As A Voltage Regulator. If the output voltage is regulated by varying the load resistance r l, keeping the input power supply voltage (v i)constant, then the regulation is called the load regulation. Voltage regulator • zener diode is a voltage regulator device because it is able to fix the output voltage at a constant value (dc voltage).

Zener diode is made specifically to work in the zener voltage region. 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. In this video, let's explore how a zener diode can be used to regulate voltage.
The Output Will Always Receive A Voltage Which Is Dependent On The Rating Of Zener Diode.
• rs is to limit the zener current, iz so that it is less than the maximum current, izm (to avoid the zener diode from broken). There is a typical flow of current from anode to cathode in a zener diode. But the connections are such that the power flow to the load side is not cut off even when the voltage exceeds the safety limits.
There Are Two Ways To Use Zener Diode As A Voltage Regulator, These Are.
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. Load regulation using zener diode: Zener diode is used as a shunt voltage regulator for regulating voltage across small loads.
To Design A Circuit Using Zener Diode So That It Gives Output Voltage Of 12V At The Output.
This is how zener diode is used as voltage regulator. This silicon semiconductor is made to work in a reverse bias environment. This circuit uses a zener diode to provide a regulated output to the load side, protecting the circuit.
Probably The Simplest Type Of Voltage Regulator Is The Zener Shunt Stabilizer, Which Works By Using A Basic Zener Diode For The Regulation, As Demonstrated In Figure Below.
Just like small signal diodes, zener diode operates normally in the forward region but in the reverse region zener goes into breakdown. To connect a zener diode in a circuit to provide voltage regulation, the zener diode should be connected, in reverse biased, in parallel to the power source which gives the zener diode its voltage, with the power source connected to a resistor. The zener diodes have a voltage rating equivalent to the intended output voltage, that may be closely match the desired output value.
Two Types Of Breakdown Occur In Zener Diode:
Due to this property zener diode being operated in the breakdown region can be used as a voltage regulator. 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. The breakdown voltage of zener diodes will be constant for a wide range of current.
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