Power amplifier circuit12/7/2023 Gain refers to the amount of amplification and the ratio between the output and input signals. Radio signal or RF amplifiers are a completely different kind of amplifier and will be covered in detail in a separate article. We will also use a radio amplifier, typically from 500kHz to tens of GHz, with a gray area in between usually for ultrasonic and video, which could use both techniques. ![]() Radio amplifiers work above that right up to several GHz.įor the sample project, we will use an audio amplifier in the 0-20kHz range, with emphasis on low noise and low distortion. Audio amplifiers are amplifiers that work between 10Hz and 30kHz.
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