filtration system

Active High Pass Filter: Theory, Design, and Applications

Active high-pass filters remove unwanted low-frequency signals while preserving useful higher frequencies. This article covers first- and second-order filter design, Sallen-Key and multiple-feedback topologies, and practical applications in audio electronics, instrumentation, and signal processing.

Active Low Pass Filter Design and Implementation

Active low-pass filters use op-amps, resistors, and capacitors to pass low-frequency signals while attenuating higher frequencies. This article covers first-order and second-order filter design, Sallen-Key and MFB topologies, cutoff frequency, Q factor, and applications.

Active Bandpass Filter Design Guide

A bandpass filter is a circuit that allows a selected range of frequencies to pass while reducing low and high frequencies. This article covers the design of active bandpass filters using op-amps, resistors, and capacitors, including cutoff and center frequencies,, Sallen-Key and MFB topologies.

Capacitors in Parallel: Theory, Design, and Practical Implementation

Capacitors in parallel are ubiquitous in digital and analog hardware. When used properly, they increase capacitance, reduce unwanted impedance and noise, and improve power integrity across a broad frequency range.

Low Pass Filter vs High Pass Filter – Theory, Design, and Applications

A comprehensive technical comparison of low-pass and high-pass filters, covering how each works, practical circuit implementations, and when to use them in electronics and signal processing.