Circuit diagram shown below is a first-order low-pass Butterworth filter that uses RC network for filtering. Loading of the RC network is avoided by using the Op-Amp which is configured for ...

Usually, this type of circuit ... using one operational amplifier, two fixed capacitors, and two fixed resistors along with a dual digital potentiometer. 2. A single programmable low-pass filter ...

The cap in question is part of the guitar’s tone circuit, which along with a potentiometer forms a variable low-pass filter. A rich folklore has developed over the years around these circuits ...

Analog circuit design using MOS transistors represents ... A second-order active filter capable of realising various frequency responses, such as low-pass, band-pass and band-stop, commonly ...