A band Stop Filter known also as a Notch Filter, blocks and rejects frequencies that lie between its two cut-off…

The state variable filter is a type of multiple-feedback filter circuit that can produce all three filter responses, Low Pass,…

Second Order (or two-pole) Filters consist of two RC filter sections connected together to provide a -40dB/decade roll-off rate. Second…

In the previous filter tutorials we looked at simple first-order type low and high pass filters that contain only one…

The principal characteristic of a Band Pass Filter or any filter for that matter is its ability to pass frequencies…

An Active High Pass Filter can be created by combining a passive RC filter network with an operational amplifier to…

By combining a basic RC Low Pass Filter circuit with an operational amplifier we can create an Active Low Pass…

Passive Band Pass Filters can be made by connecting together a low pass filter with a high pass filter. Band…

A High Pass Filter is the exact opposite to the low pass filter circuit as the two components have been…

A Low Pass Filter is a circuit that can be designed to modify, reshape or reject all unwanted high frequencies…