Advertisements
Advertisements
प्रश्न
Draw the circuit diagram of zener diode as a voltage regulator and briefly explains its working ?
उत्तर
Zener diode as voltage regulator
-
After the break down voltage, a small change in the voltage across the zener diode produces a large change in the current through the circuit.
-
If the voltage is increased beyond the zener voltage, then the resistance of the zener diode drops considerably.
-
A zener diode and a resistor are connected to a fluctuating DC supply such that the zener diode is reverse biased.
- When the voltage across the diode tends to increase, the current through the diode rises out of proportion and causes a sufficient increase in voltage drop across the resistor. Therefore, the O/P voltage lowers back to normal.
संबंधित प्रश्न
Describe, with the help of a circuit diagram, the working of Zener diode as a voltage regulator.
Explain, with the help of a circuit diagram, the principle and working of a Zener diode as voltage regular.
Name the device which is used as a voltage regulator. Draw the necessary circuit diagram and explain its working?
Describe briefly with the help of a circuit diagram how a zener diode works to obtain a constant dc voltage from the unregulated dc output of a rectifier ?
Voltage applied between cathode and anode of an X-ray tube is 18 kV. Calculate the minimum wavelength of the X-rays produced.
Draw labelled graphs showing the input and output voltages.
Electronic motors operating at low voltages tend to burn out because
Consider the following statements (A) and (B) and identify the correct answer.
(A) A Zener diode is connected in reverse bias when used as a voltage regulator.
(B) The potential barrier of the p-n junction lies between 0.1 V to 0.3 V.
Consider the following statements (A) and (B) and identify the correct answer.
- A zener diode is connected in reverse bias, when used as a voltage regulator.
- The potential barrier of p-n junction lies between 0.1 V to 0.3 V.
A Zener diode is to be used as a voltage regulator. Identify the correct setup.
