DIODES

Question 1

Most basic semiconductor device that acts as a simple switch where the current flows in only one direction.

Answer 1

Diode

Question 2

The characteristics of an ideal diode

Answer 2

conduct current in only one direction

Question 3

The first electronic device to be introduced

*Is like a simple switch

Answer 3

Ideal Diode

Question 4

Is formed by joining P-type and N-type material.

Answer 4

Semiconductor Diode

Question 5

When the Anode is positive and Cathode is negative, is it a closed circuit or open circuit?

Answer 5

Closed Circuit

Question 6

When the Anode is negative and the Cathode is negative, is it a closed circuit or open circuit?

Answer 6

Open Circuit

Question 7

the net flow of charge in any one direction for a semiconductor diode is zero.

Answer 7

No Applied Bias

Question 8

If an external potential of V volts is applied across the p-n junction such that the positive terminal is connected to the n-type material and the negative terminal is connected to the p-type material.

Answer 8

Reversed Bias

Question 9

The current that exists under reverse-bias conditions

Answer 9

Reverse Saturation Current

Question 10

typically in the nanoampere range for
silicon devices and in the low-microampere range for germanium.

Answer 10

Saturation Current Level

Question 11

established by applying the positive potential to the p-type material and the negative potential to the n-type material

Answer 11

Forward Bias

Question 12

There is a point where the application of too negative a voltage will result in a sharp change in the characteristics

Answer 12

Zener Region

Question 13

The reverse-bias potential that results in this dramatic change in characteristics

Answer 13

Zener Potential

Question 14

The maximum reverse-bias potential that can be applied before entering the Zener region

Answer 14

Peak Inverse Voltage

Question 15

The reverse saturation current Is will just about double in magnitude for every ____ increase in temperature.

Answer 15

10°C

Question 16

The application of a dc voltage to a circuit containing a semiconductor
diode will result in an operating point on the characteristic curve that
will not change with time

Answer 16

DC or Static Resistance

Question 17

The varying input will move the instantaneous operating point up and down a region of the characteristics and thus defines a specific change in current and voltage

Answer 17

AC or Dynamic Resistance

Question 18

the resistance determined by a straight line drawn between the two intersections established by the maximum and minimum values of input voltage.

Answer 18

Average AC Resistance

Question 19

This is the 1st Approximation in Diode circuit analysis
often made without a serious loss in accuracy

Answer 19

Ideal Diode

Question 20

*It states that a forward-biased silicon diode in an electronic system
under dc conditions has a drop of 0.7 V across it in the conduction
state at any level of diode current

Answer 20

Simplified Equivalent Circuit

Question 21

*One technique for obtaining an equivalent circuit for a diode is to
approximate the characteristics of the device by straight-line
segments.

Answer 21

Piecewise-Linear Equivalent

Question 22

Which of the three equivalent circuits is the most accurate model?

Answer 22

Piecewise-Linear