Giáo trình Tiếng Anh chuyên ngành - Điện tử công nghiệp

TIẾNG ANH CHUYÊN NGÀNH ĐIỆN TỬ CÔNG NGHIỆP

Unit 1: ELECTRONIC DEVICES

What are Electronic Circuits?

An electronic circuit is made up of individual electronic components, such as

resistors, transistors, capacitors, inductors and diodes which has different roles in an

electronic circuit. An electronic circuit can be divided into an analog circuit, a digital

circuit or a mixed-signal circuit.

Ammeter

Amplifier

AND GATE

Antenna

Capacitor

Diode Type-light

Diode-Schottky

Circuit Breaker

Exclusive OR

Battery

Diode

Earth Ground

Integrated Circuit

Transistor PNP

Rectifier

Relay

Diode Type 2

Resistors

Transistor NPN

Voltmeter

Wattmeter

Rheostat

Solar Cell

Transformer

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TIẾNG ANH CHUYÊN NGÀNH ĐIỆN TỬ CÔNG NGHIỆP

Symbol Component name

Meaning

Wire Symbols

Electrical Wire

Conductor of electrical current

Connected Wires

Not connected Wires

Connected crossing

Wires are not connected

Switch Symbols and Relay Symbols

SPST Toggle Switch

SPDT Toggle Switch

Pushbutton Switch (N.O)

Disconnects current when open

Selects between two connections

Momentary switch - normally open

Pushbutton Switch (N.C)

DIP Switch

Momentary switch - normally closed

DIP switch is used for onboard

configuration

SPST Relay

SPDT Relay

Relay open / close connection by an

electromagnet

Jumper

Close connection by jumper insertion on

pins.

Solder Bridge

Solder to close connection

Ground Symbols

Earth Ground

Used for zero potential reference and

electrical shock protection.

Chassis Ground

Connected to the chassis of the circuit

Digital / Common Ground

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Resistor Symbols

Resistor (IEEE)

Resistor (IEC)

Resistor reduces the current flow.

Potentiometer (IEEE)

Potentiometer (IEC)

Adjustable resistor - has 3 terminals.

Adjustable resistor - has 2 terminals.

Variable Resistor /

Rheostat(IEEE)

Variable Resistor / Rheostat

(IEC)

Capacitor Symbols

Capacitor

Capacitor is used to store electric charge.

It acts as short circuit with AC and open

circuit with DC.

Capacitor

Polarized Capacitor

Electrolytic capacitor

Polarized Capacitor

Variable Capacitor

Electrolytic capacitor

Adjustable capacitance

Inductor / Coil Symbols

Inductor

Coil / solenoid that generates magnetic

field

Iron Core Inductor

Variable Inductor

Includes iron

Power Supply Symbols

Voltage Source

Generates constant voltage

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Current Source

AC Voltage Source

Generator

Generates constant current.

AC voltage source

Electrical voltage is generated by

mechanical rotation of the generator

Battery Cell

Battery

Generates constant voltage

Controlled Voltage Source

Controlled Current Source

Generates voltage as a function of voltage

or current of other circuit element.

Generates current as a function of voltage

or current of other circuit element.

Meter Symbols

Voltmeter

Ammeter

Ohmmeter

Measures voltage. Has very high

resistance. Connected in parallel.

Measures electric current. Has near zero

resistance. Connected serially.

Measures resistance

Wattmeter

Measures electric power

Lamp / Light Bulb Symbols

Lamp / light bulb

Generates light when current flows

through

Lamp / light bulb

Diode / LED Symbols

Diode

Diode allows current flow in one direction

only (left to right).

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Zener Diode

Allows current flow in one direction, but

also can flow in the reverse direction

when above breakdown voltage

Schottky Diode

Schottky diode is a diode with low

voltage drop

Varactor / Varicap Diode

Variable capacitance diode

Tunnel Diode

Light Emitting Diode (LED)

Photodiode

LED emits light when current flows

through

Photodiode allows current flow when

exposed to light

Transistor Symbols

NPN Bipolar Transistor

PNP Bipolar Transistor

Darlington Transistor

JFET-N Transistor

Allows current flow when high potential

at base (middle)

Allows current flow when low potential at

base (middle)

Made from 2 bipolar transistors. Has total

gain of the product of each gain.

N-channel field effect transistor

JFET-P Transistor

P-channel field effect transistor

N-channel MOSFET transistor

P-channel MOSFET transistor

NMOS Transistor

PMOS Transistor

Misc. Symbols

Motor

Electric motor

Transformer

Electric bell

Change AC voltage from high to low or

low to high.

Rings when activated

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Buzzer

Produce buzzing sound

Fuse

The fuse disconnects when current above

threshold. Used to protect circuit from

high currents.

Bus

Contains several wires. Usually for data /

address.

Bus

Optocoupler / Opto-isolator

Optocoupler isolates onnection to other

board

Loudspeaker

Converts electrical signal to sound waves

Converts sound waves to electrical signal

Amplify input signal

Microphone

Operational Amplifier

Schmitt Trigger

Operates with hysteresis to reduce noise.

Analog-to-digital

converter(ADC)

Converts analog signal to digital numbers

Converts digital numbers to analog signal

Digital-to-Analog converter

(DAC)

Crystal Oscillator

Used to generate precise frequency clock

signal

Antenna Symbols

Antenna / aerial

Transmits & receives radio waves

Antenna / aerial

Dipole Antenna

Two wires simple antenna

Outputs 1 when input is 0

Logic Gates Symbols

NOT Gate (Inverter)

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AND Gate

NAND Gate

OR Gate

Outputs 1 when both inputs are 1.

Outputs 0 when both inputs are 1. (NOT +

AND)

Outputs 1 when any input is 1.

NOR Gate

XOR Gate

D Flip-Flop

Outputs 0 when any input is 1. (NOT +

OR)

Outputs 1 when inputs are different.

(Exclusive OR)

Stores one bit of data

Multiplexer / Mux 2 to 1

Multiplexer / Mux 4 to 1

Connects the output to selected input

line.

Demultiplexer / Demux 1 to 4 Connects selected output to the input line.

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Unit 2: ELECTRIC EQUIPMENT

Heat pump

Lightning arrester

Magnetic starter

Circuit breaker

Electrical system

Sockets and switch

Microwave oven

Oxygen generator controller

Overload protector

Actuator

Thermal relay

Auto- starter

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Dispenser

Amplifier

Automatic vacuum pump

Fuse

Electric cable

Electric pipeline

Relay

Ceiling roses

Arlam bell

Synchronous machine

Surge arrester

Lightning arrrester

Step- down transformer

Stepless transformer

Three phase circuit breaker

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Magnetic contactor

Voltage regulator

Universal electricmeter

Power capacitor

PLC programmer

Underground cable

Cable ladder

Cable tray

Force sensor

Frequency converter

Bolt, nut and washes

Hand drill

Insulated pliers

Spanner

Adjustable wrench

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Screwdriver

Hydraulic pump

Magnetic brake clutch

Gear box

Gear motor

Synchronous generator

Busbar

Central control box

Ceramic insulator

Medium voltage fuses

Disconnect switch

Band conveyor

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Electric fan

Electric iron

Electric cooker

Pressure cooker

Light bulb

Flourescent tube

Resistor

Rheostat

Varistor

Oil- immersed transformer

Dry- type transformer

Current transformer

Ammeter

Voltmeter

Wattmeter

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Unit 3: TEST AND REPAIR INSTRUMENT

Some electronic equipment used to test and repair

Digital voltmeter checking a prototype

The following items are used for basic

measurement of voltages, currents, and components

in the circuit under test.

 Voltmeter (Measures voltage)

 Ohmmeter (Measures resistance)

 Ammeter, e.g. Galvanometer or Milliameter

(Measures current)

 Multimeter

e.g.,

VOM

(Volt-Ohm-

Milliameter) or DMM (Digital Multimeter)

(Measures all of the above)

The following are used for stimulus of the circuit under test:

 Power supplies

 Signal generator

 Digital pattern generator

 Pulse generator

The following analyze the response of the circuit under test:

 Oscilloscope (Displays voltage as it changes over time)

 Frequency counter (Measures frequency)

And connecting it all together:

 Test probes

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Unit 4: SAFETY IN INDUSTRIAL ELECTRICAL APPLICATION

1. The cause and effect of accident in electric field

Electric shock

Electrical burns

Thermal burns

2. Safety equipments

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Hearing protective

devices, such as ear

muffs and ear plugs

Eye and face protection, such as

goggles

Respirators

Safety helmets and sun

hats

Safety boots

Gloves

High visibility vest

Life jackets

3. The methods of advoiding accidents

→ Equipment must be locked

out and tagged out before

preventive maintenance or

servicing is performed.

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A variety of possible solutions may be implemented to

reduce or eliminate the risk of injury associated with

electrical work. Examples of solutions include the use

of insulation, guarding, grounding, electrical

protective devices, and safe work practices.

→

Lockout devices are

available in various shapes

and sizes that allow for the

lockout of standard control

devices.

→ Lockout/tagout kits comply

with OSHA lockout/tagout

standards.

→ Clothing should fit snugly

to avoid danger of becoming

entangled

in

moving

machinery or creating a

tripping or stumbling hazard.

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→ Always use the correct fire

Extinguisher for the class of

fire.

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