EDN

Active High Pass Filter Using LM741

This is active high pass filter circuit for 327Hz frequency using LM741. It will use to build Harmonic at 3 of 130.81 frequency have the value at least. More than the frequency Fundamental 30 dB, for ...
Hackaday

Universal Active Filters: Part 1

Today I am experimenting with a single chip Universal Active Filter, in this case I made a small PCB for the UAF-42 from Texas Instruments. I chose this part in particular as it facilitates setting ...
EDN

First-order Butterworth Active Low-pass Filter

Butterworth filter is a type of filter whose frequency response is flat over the passband region. Low-pass filter (LPF) provides a constant output from DC up to a cutoff frequency f(H) and rejects all ...
Design-Reuse

Active Programmable High Pass Filter

The WEA228HPFA18BT122G is an active High Pass filter with variable frequency and variable gain. The cutoff frequency can be set from 2 MHz to 27.5 MHz ...