| Author | Message | | | yangandjiao | | Posted: Tue Jul 01, 2008 2:43 am Post subject: Class D Amplifiers | | | | Joined: 23 Apr 2008 Posts: 65 | | A Class D amplifier's high efficiency makes it ideal for portable and compact high-power applications. Traditional Class D amplifiers require an external lowpass filter to extract the audio signal from the pulse-width-modulated (PWM) output waveform. Many modern Class D amplifiers, however, utilize advanced modulation techniques that, in various applications, both eliminate the need for external filtering and reduce electromagnetic interference (EMI). Eliminating external filters not only reduces board-space requirements, but can also significantly reduce the cost of many portable/compact systems. | |
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