低通滤波器

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错误信息

User warning: The following module is missing from the file system: announcements_feed. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1181 of /mydata/minisites.eetrend.com/web/includes/bootstrap.inc).

如何组合使用低通滤波器和ADC驱动器获取20 V p-p信号

为何要组合使用低通滤波器(LPF)和模数转换器(ADC)驱动器?