SSD Final

Question 1

Diode

Answer 1

Semi conductor device that allows current to flow in only one direction

Question 2

Semi conductor

Answer 2

Material with electrical characteristics of both conductor and insulator

Question 3

N-Type Material

Answer 3

Semi conductor material created with an excess of electrons

Question 4

P-Type Material

Answer 4

Semi conductor material created with a deficiency of electrons

Question 5

Depletion Region

Answer 5

Thin neutral area formed at the junction of P and N-type materials

Question 6

Forward Bias

Answer 6

Voltage applied with polarity that allows a diode to act as a conductor

Question 7

Reverse bias

Answer 7

Voltage applied with polarity that allows a diode to act as an insulator

Question 8

Characteristic Curve

Answer 8

Curve on a graph that shows the relationship between voltage, current and polarity for an electrical device

Question 9

Forward Break-over voltage

Answer 9

Amount of forward bias voltage needed for a diode to act as a conductor

Question 10

Peak Inverse Voltage

Answer 10

Amount of reverse bias voltage a diode can withstand before breaking down

Question 11

Forward operating Current

Answer 11

Current range in which a diode can safely operate

Question 12

Avalanche Current

Answer 12

Free flow of electrons through a diode once it breaks down

Question 13

Doping

Answer 13

Process of adding impurities to semi conductor material to allow for electron flow

Question 14

2 most common semi conductor materials

Answer 14

Silicon and Germanium

Question 15

DC Power Supply

Answer 15

A device that converts AC to regulated DC

Question 16

Rectifier

Answer 16

Part of a DC power supply that converts AC into DC

Question 17

Voltage Limiter

Answer 17

An electronic circuit that consists of diodes used to control voltage where large changes are expected

Question 18

Pulsating DC

Answer 18

Electricity that varies in amplitude but does not change polarity

Question 19

Filter

Answer 19

Part of a DC power supply that smooths the pulsating DC power supply

Question 20

Voltage regulator

Answer 20

Electronic circuit that maintains a relative constant value of output voltage over a wide range of operating situations

Question 21

Voltage divider

Answer 21

Circuit that provides several different voltage for different loads

Question 22

Voltage multipler

Answer 22

Electronic circuit designed to supply higher voltages than the AC source without using a transformer

Question 23

Printed Circuit Board PCB

Answer 23

Board of insulated material containing electrical connections used to create a circuit for mounting components onto

Question 24

Trace

Answer 24

Conductive path found on a printed circuit board also known as foil

Question 25

solder Pad

Answer 25

Small flat conductor to which components are soldered

Question 26

Silk Screen Layer

Answer 26

Layer of text applied to the outer surface of a PCB

Question 27

Conformal coating

Answer 27

Thin layer of material applied to the surface of a PCB that provides protection

Question 28

Heat sink

Answer 28

Device that draws heat away from components protecting them from heat damage

Question 29

Trouble shooting

Answer 29

Systematic elimination of various parts of a system, circuit or process to locate a defective part

Question 30

Soldering

Answer 30

Process of making a sound electrical and mechanical joint between metals using solder

Question 31

Solder

Answer 31

Alloy used for soldering that consists of two or more metals

Question 32

Solder flux

Answer 32

substance used to minimize oxidation from soldering

Question 33

Eutectic Alloy

Answer 33

Alloy that has one specific melting temperature with no in between

Question 34

Colder solder joint

Answer 34

solder joint that results when the parts being soldered have not been properly heated to the melting temperature of the solder

Question 35

solder mask

Answer 35

Pemanent protective coating that protects circuity from unwanted solder

Question 36

Bus

Answer 36

Large trace that extends around the edge of a PCB in order to make a common connection

Question 37

Transistor/BJT

Answer 37

3 terminal semi conductor device that switches or amplifies electrical signals

Question 38

Base

Answer 38

Transistor terminal that controls current flow from the emitter to the collector

Question 39

Emitter

Answer 39

Transistor terminal taht emits current to the collector

Question 40

Collector

Answer 40

Transistor terminal that collects current from the emmiter

Question 41

Amplifer

Answer 41

An electron device or circuit that increases the magnitude of an input signal

Question 42

Gain

Answer 42

Ratio between the output signal and the input signal

Question 43

SCR

Answer 43

3 terminal semi conductor device that uses 4 layers of semiconductor material to control current flow

Question 44

Gate

Answer 44

Terminal of an SCR that serves as the control point

Question 45

Gate Current

Answer 45

amount of current to the gate need to turn on the SCR

Question 46

Holding current

Answer 46

Amount of current flowing through the anode-cathode circuit to keep the SCR on the ON state

Question 47

The 5 parts of a DC power supply in order to

Answer 47

1. Transformer 2. Rectifier 3. Filter 4. Voltage Regulator 5. Voltage Divider