what is a class-D amplifer,and its advantages

Discussion in 'Physics' started by briggs, Nov 29, 2003.

  1. briggs

    Thread Starter New Member

    Nov 29, 2003
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  2. Battousai

    Senior Member

    Nov 14, 2003
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    A class D amplifier is one that has a power efficiency (theoretical) of 100%.

    Also it has a conduction angle less than 180 degrees.
     
  3. Battousai

    Senior Member

    Nov 14, 2003
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    44
    A large square wave usually drives an inverter. The output of the inverter is connected to a tank tuned to the desired resonant frequency. When the square wave input is low, current flows to the load. When the square wave is high, no current flows. The efficiency is RL/(RL+Ron), where Ron = resistance of the on transistor.
     
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