Advertisements
Advertisements
Question
What is the use of Zener diode?
Solution
Zener diode is used to stabilize voltage in the circuit.
APPEARS IN
RELATED QUESTIONS
When a forward bias is applied to a p-n junction, it ______.
Show on a graph, the variation of resistivity with temperature for a typical semiconductor.
Why is a zener diode considered as a special purpose semiconductor diode?
A triode value operates at Vp = 225 V and Vg = −0.5 V.
The plate current remains unchanged if the plate voltage is increased to 250 V and the grid voltage is decreased to −2.5 V. Calculate the amplification factor.
In semiconductor physics, what is meant by:
(i) rectifier
(ii) an amplifier
(iii) an oscillator
Of the diodes shown in the following diagrams, which one is reverse biased?
The current through an ideal PN-junction shown in the following circuit diagram will be:
A – pn junction has a depletion layer of thickness .of the order of
Consider a box with three terminals on top of it as shown in figure (a):
 (a) |
Three components namely, two germanium diodes and one resistor are connected across these three terminals in some arrangement. A student performs an experiment in which any two of these three terminals are connected in the circuit shown in figure (b).
 (b) |
The student obtains graphs of current-voltage characteristics for unknown combination of components between the two terminals connected in the circuit. The graphs are
(i) when A is positive and B is negative
 (c) |
(ii) when A is negative and B is positive
 (d) |
(iii) When B is negative and C is positive
|
(e) |
(iv) When B is positive and C is negative
 (f) |
(v) When A is positive and C is negative
 (g) |
(vi) When A is negative and C is positive
 (h) |
From these graphs of current-voltage characteristics shown in figure (c) to (h), determine the arrangement of components between A, B and C.
Describe briefly the following term:
breakdown voltage in reverse biasing
