The circuit was designed to create a high-pass filter that can be variably change to work with frequency range from 20 Hz to 200 Hz. High Pass Filter – an electronic circuit that allows the passage of ...

Many analog signal-chain circuits require ac-coupling to eliminate unwanted dc voltages or offsets. The simplest means to ac-couple is to use a capacitor in series with the signal path, thus forming a ...

Many sensors have a small analog signal that rides on top of a larger dc pedestal. For these circuits (Fig. 1), the signal must be ac coupled and amplified before it’s digitized. The feedback of an ...