Diodes

Question 1

Drift current

Answer 1

Due to the motion of charge carriers due to the force exerted on them by an electric field

Question 2

Diffusion current

Answer 2

Due to the transport of charges occuring because of non-uniform concentration of charged particles

Question 3

Biasing

Answer 3

Process of application of external DC voltage to diode or any other semiconductor device

Question 4

Large signal models

Answer 4

Shows how a diode behaves when a DC signal is acting on it

Question 5

Clampers

Answer 5

Diode networks that will clamp a signal to a different DC level.

Question 6

Clippers

Answer 6

Diode networks to clip away a portion of input signal without distorting the remaining part of the applied waveform

Question 7

LEDs

Answer 7

Optoelectronic devices which emit a fairly narrow bandwidth of visible or invisible light when its internal diode junction is stimulated by a forward electric current/voltage.

Question 8

Photodiode

Answer 8

Two terminal semiconductor p-n junction device having a small transparent window to allow light to strike the p-n junction and is designed to operate with reverse bias.

Question 9

Varactor diode

Answer 9

Special diodes fabricated to be used as voltage variable capacitors

Question 10

Tunnel diode

Answer 10

High conductivity two terminal p-n junction diode doped heavily about 1000 times higher than a conventional diode.