Diodes

Question 1

What are diodes

Answer 1

• Used in devices for one-way passage of the current

Question 2

What are zener-diodes

Answer 2

• One-way passage components that allow passage up to a certain voltage
• Beyond this voltage, the current will flow in both directions

Question 3

What are light-emitting diodes

Answer 3

• Also known as LEDS, will emit light when current passes through
• Mainly used as indicators
• Less power consumption than lamps

Question 4

What is the transistor used for

Answer 4

• Acts as a switch or amplifier

Question 5

What is a n-type material

Answer 5

• n-type materials are materials used in semiconductors that has more electrons than are needed (slightly negative)

Question 6

What is a p-type material

Answer 6

• p-type materials are materials used in semiconductors that have a deficiency in electrons (slightly positive)

Question 7

Describe the p-n junction

Answer 7

• When a layer of p-type and n-type material is butted against each other
• Creates a one-way passage for electricity. This is because of the depletion zone which is a gap between the positive and negative charges

Question 8

What is a forward bias in the p-n junction

Answer 8

• When the current flows in a direction and the unlike particles attract
• This reduces the depletion zone and allows current to flow through it

Question 9

What is a reverse bias in the p-n junction

Answer 9

• When the current flows in the opposite direction causing the particles to repel from each other.
• This increases the depletion zone and prevents current from flowing through