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PULSE WAVE MODULATOR [1 record]

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Record 1 2008-02-13

English

Subject field(s)
  • Electrical Engineering
CONT

Various methods have been proposed to implement a digital-to-analog converter (DAC). One such method is to create a pulse train whose average value is equal to the magnitude of the digital input and then average the pulse train by passing it through a low-pass filter. Conventionally, pulse wave modulators (PWM) are used to create the pulse train from a digital input signal. However, the quality of the analog signal that results from the filtered pulse train may contain considerable noise unless an expensive low-pass filter is constructed.

French

Domaine(s)
  • Électrotechnique

Spanish

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