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Definition of "Audio Amplifier" |
An amplifier designed to be used in the audio range of frequencies. / An amplifier designed to amplify frequencies between 15 hertz (15 Hz) and 20 kilohertz (20 kHz), which relates to the frequency range of human hearing. Voice bandwidth on a phone line is limited to between 300Hz and 3.4KHz. The transistor Q1 is the amplifier in the circuit to the right [Example Audio Amplifier Circuit]. |
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