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Parts of pieces of electrical equipment

anode

noun

one of the electrodes in a piece of electrical equipment such as a battery to which negative ions are attracted. It has a positive electric charge.

cathode

noun

the negative electrode in a battery or similar piece of electrical equipment, or the negative electrode in an electrolytic cell

circuit

noun

the complete path around which an electric current flows

circuit board

noun

a board in a piece of electronic equipment with electrical connections or computer chips in it

circuit breaker

noun

a piece of equipment designed to stop an electric current automatically if it becomes too strong or dangerous

circuitry

noun

a system of circuits around which an electric current flows

coil

noun

a piece of curved wire that produces heat or light when electricity passes through it

conduit

noun

a plastic tube that covers and protects wires

contact

noun

a place where two electrical conductors meet and where electric current passes between them

diaphragm

noun

a piece of equipment that changes sound into electric signals and electric signals into sound, for example in a telephone receiver

diode

noun

a piece of electronic equipment through which electrical current moves in one direction only

earth

noun

ground in an electrical system

electrode

noun

a small metal or carbon object inside an electrical cell or a battery that electricity flows through. There are two electrodes, one positive and one negative.

element

noun

the part of a piece of electrical equipment that produces heat

fuse

noun

a part of a piece of electrical equipment that makes it stop working when there is too much electricity flowing through it

fuse box

noun

a box containing the fuses for the electrical system in a building

fuze

an American spelling of fuse1

ground

noun

a wire that makes electrical equipment safe by allowing the current to flow into the ground

handset

noun

a small piece of electronic equipment that you hold and use for controlling another piece of equipment from a distance

induction coil

noun

a piece of equipment used for changing low voltage (=an amount of electricity) to high voltage

integrated circuit

noun

a set of electronic parts on a single chip (=a small piece of a material that allows some electricity to pass through it), used for performing the same jobs as a number of separate parts that would need much more space

LCD

noun

liquid crystal display: a thin screen on a piece of electronic equipment such as a calculator, a clock, or a computer that shows the time or other information

LED

noun

light-emitting diode: a piece of electronic equipment that produces light and is used especially in computer screens, digital watches, and calculators

live wire

noun

a wire through which electricity passes

needle

noun

a small thin part on a scientific instrument that moves to show measurements

oscillator

noun

a piece of equipment that changes the type of electric current from direct current to alternating current

oscilloscope

noun

a piece of equipment that shows oscillations in an electric current as waves on a screen

parallel circuit

noun

an electric circuit in which all the parts are connected directly to the voltage supply, so that each receives a part of the current

pilot light

noun

a small light on a piece of electrical equipment that shows when the equipment is switched on

pointer

noun

a thin narrow piece of metal that points to a number on a measuring instrument

printed circuit

noun

a narrow line of metal in a very thin layer that is put on a board to carry an electronic signal instead of a wire. The board it is on is called a printed circuit board.

receptor

noun

a piece of equipment that is designed to receive electronic signals

rectifier

noun

a piece of electrical equipment that changes alternating current (AC) to direct current (DC)

resistor

noun

a piece of wire or other material that controls the level of current flowing in an electrical circuit by providing resistance

series circuit

noun

an electrical circuit in which the current passes through one part of the circuit after another

spur

noun

a part of something such as a railroad or an electrical circuit that goes in a different direction from the main part

terminal

noun

a place where electricity enters or leaves a piece of electrical equipment

touchpad

noun

a part of a piece of electronic equipment containing a number of smaller areas that you touch in order to make it operate, for example on a microwave oven

transformer

noun

a piece of equipment that changes the voltage of a flow of electricity

transistor

noun

an object that controls the flow of electricity inside a piece of electronic equipment such as a radio or television

wire

noun

a long thin piece of metal that carries electricity or telephone signals

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