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您現在的位置是:蟲蟲下載站 > 資源下載 > 其他嵌入式/單片機內容 > he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with on

he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with on

  • 資源大小:2 K
  • 上傳時間: 2015-05-14
  • 上傳用戶:wangdatouay
  • 資源積分:2 下載積分
  • 標      簽: signal Modulated analog create

資 源 簡 介

he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain poiTnt of time is proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering, (e.g. RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 to control for example the speed of DC motors or the brightness of electric lighting.

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