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Amplifier
Example
The sound engineer used a microphone and amplifier to amplify the singer's voice during the concert.
The marching band used amplifiers mounted on carts to amplify the brass section during the halftime show.
The electric guitar's pickups pick up the vibrations of the strings and send them to the amplifier.
Inductors are part of complex circuitry in various electronic devices, including amplifiers, oscillators, and radio frequency identification (RFID) systems.
In a vacuum tube, the cathode emits electrons when heated, enabling the device to function as an amplifier or oscillator.
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