Band Stop Filter
Posted in Learning

Band Stop Filter

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

State Variable Filter
Posted in Learning

State Variable Filter

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

Second Order Filters
Posted in Learning

Second Order Filters

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

Butterworth Filter Design
Posted in Learning

Butterworth Filter Design

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

Passive Band Pass Filter
Posted in Learning

Passive Band Pass Filter

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

Passive High Pass Filter
Posted in Learning

Passive High Pass Filter

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

Passive Low Pass Filter
Posted in Learning

Passive Low Pass Filter

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

Frequency Response
Posted in Learning

Frequency Response

Frequency Response of an amplifier or filter shows how the gain of the output responds to input signals at different…