Unit 14-B1

to increase the strength of a signal or an electrical wave

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• Capacitor

• Conduct

• Induce

• Amplify

an electronic device, used in computers, radios, etc., which

controls current by acting as a switch or as an amplifier

(= a device for increasing an electrical signal)

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• Transformer

• Transistor

• Relay

• Capacitor

to produce an electric current

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• Amplify

• Conduct

• Induce

• Modulate

a single short increase in the amount of energy, electricity, etc. produced by a device

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• Oscillator

• Current

• Frequency

• Pulse

a device that opens or closes an electric circuit

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• Switch

• Diode

• Relay

• Transistor

an electrical device that produces an alternating current (=electrical current that changes direction many times a second)

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• Oscillator

• Resistor

• Switch

• Pulse

a device that reduces the flow of current in an electronic circuit

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• Transistor

• Capacitor

• Diode

• Resistor

to change the characteristics of a signal or a wave, by altering its frequency, amplitude, etc.

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• Induce

• Amplify

• Modulate

• Conduct

the flow of electricity through a wire

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• Current

• Frequency

• Pulse

• Resistor

the rate at which a sound or an electrical wave moves up and down

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• Current

• Diode

• Frequency

• Relay