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Derivative_controlled_low_pass_filter

2017-02-25 08:45  
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Derivative_controlled_low_pass_filter
Derivative-controlled low-pass filter. This circuit settles rapidly in response to step changes, then assumes a long time constant for filtering noise. In the oscilloscope photo trace A is the input step, trace B is the control input and trace C is the signal output (courtesy Analog Devices, Inc.).