Question
Name the semiconductor device that can be used to regulate an unregulated dc power supply. With the help of I-V characteristics of this device, explain its working principle.

Answer

Zener diode.Alternate Answer

I-V characteristic

insigniticant change in the (reverse) bias voltage across the Zener diode (and hence the load) even for large changes in current.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A long wire is bent as shown in the figure. Find the magnitude and direction of magnetic field at center $O$ of the circular part when a current $i$ ampere flows through it.
Image
An iron needle is attracted to the ends of a bar magnet but not to the middle region of the magnet. Is the material making up the ends of a bar magnet different from that of the middle region?
Give the explanation of the velocity of $E M$ wave and derive the equation of refractive index $n=\sqrt{\mu_r K }$.
Explain : "Electric charges are additive in nature."
Suppose the platform of the previous problem is brought to rest with the ball in the hand of the kid standing on the rim. The kid throws the ball horizontally to his friend in a direction tangential to the rim with a speed v as seen by his friend. Find the angular velocity with which the platform will start rotating.
When an electron falls from a higher energy to a lower energy level, the difference in the energies appears in the form of electromagnetic radiation. Why cannot it be emitted as other forms of energy?
Explain the refraction of light from a denser medium to a rarer medium, using Huygen's principle.
State the Oersted's observation.
(a) Calculate the potential at a point $P$ due to a charge of $4 \times 10^{-7} C$ located $9 cm$ away.
(b) Hence obtain the work done in bringing a charge of $2 \times 10^{-9} C$ from infinity to the point P. Does the answer depend on the path along which the charge is brought?
Out of electric field vector $\vec{E}$ and magnetic field vector $\vec{B}$ in an electromagnetic wave, which is more effective and why ?