Basic Active and Passive Filters

Desing And Implementation of Adaptive Active Filters for Exact Estimation And Elimination of AC Network Distortions

In recent years, active filters have been considered and developed for elimation of harmonics in power networks. Comparing with passive, they are smaller and have better compensating characteristics and resistance to line distortions. In this paper, a novel idea based on adaptive filter theory in presented to develop an active filter to eliminate the distortions of an arbitrary signal. Using th...

Harmonic Elimination of 25 kV AC Electric Railways Utilizing a New Hybrid Filter Structure

Thyristor rectifiers are widely used in electric railways in order to control the speed. As a consequence of their usage in addition to substantial input lead current, an enormous amount of harmonics is injected into the grid. To avoid such harmonics as well as reactive power compensation, reactive power hybrid filters consisting of active and passive filters are utilized. Regarding different p...

Desing And Implementation of Adaptive Active Filters for Exact Estimation And Elimination of AC Network Distortions

In recent years, active filters have been considered and developed for elimation of harmonics in power networks. Comparing with passive, they are smaller and have better compensating characteristics and resistance to line distortions. In this paper, a novel idea based on adaptive filter theory in presented to develop an active filter to eliminate the distortions of an arbitrary signal. Using th...

A Basic Introduction to Filters — Active , Passive , and Switched - Capacitor National Semiconductor Application Note 779

Switched-Resistor Filters-A Continuous Time Approach to Monolithic MOS Filter Design

Absfruct-A method of designing continuous-time active RC filters which employ only capacitors and FET transistors is presentedl. The effective RC time constants of these filters are determined by capacitor ratios. The filters employ switched resistors. These filters can uric any existing active RC or passive RC topology as the basis for the design and inherit the sensitivity properties of the c...