Chapter 2 diodes

A diode used to convert ac into pulsating dc is called a _ .

rectifier

A forward-biased diode act like a switch that is _ .

Closed

A PN junction Diode can be formed by pressing N-Type and P-Type materials together. T/F

False

Germanium and Silicon diodes cannot be damaged by excessively high reverse voltages since no current flows. T/F

False

The reverse current is usually higher in silicon diodes. T/F

False

The construction technique which allows a pellet of idium to be fused to a semiconductor crystal is referred to as _ method.

Alloyed

The cathode end of a diode may be identified by a _ at one end of the device.

Band

A component most often used to filter a pulsating dc into pure dc is a _ .

Capacitor

When a PN junction is formed, a _ region is created in the area of the junction.

Depletion

The construction technique which allows a gaseous impurity element to penetrate a semiconductor wafer is referred to as the _ method.

Diffusion

Electrically charged atoms are referred to as _ .

Ions

An understanding of diode operation can only be obtained by examining the action which takes place at the _ of the diode.

Junction

A small reverse current that flows through a reverse-biased diode is sometimes called a _ current.

Leakage

A diode is formed by joining _ _ and _ _ semiconductor materials.

N-Type P-Type

A reverse-biased diode acts like a switch that is _ .

Open

The grown method of PN junction formation utilizes a _ crystal which is dipped into a molten mixture of semiconductor materials and then withdrawn.

Seed

The P section of a diode is represented by a triangle/arrow in the diode symbol. T/F

True

The V-I characteristic curves of silicon and germanium diodes are similar. T/F

True

The abbreviation PIV stands for Peak Inverse Voltage. T/F

True

The depletion region is neutralized when the diode is forward biased. T/F

True

A transformer, a rectifier diode and a filter are combined to form a circuit called a _ .

power supply