Electronics 101: Active Filters

[@agstechnicalsupport]

Thank you for the brief and very good summary on active filters !

[@ralishaoliver3610]

This was SOOO helpful. After class i kept asking why does my teacher sometimes say BandPass and other times say PassBand. Well now i know!!! THANK YOU!!!

[@SamWalsh1]

This video was a great help to me, so clear and not math heavy, just want I wanted.

[@AaronB99999]

13:00 I had a revelation here that this configuration can be whatever you want it to be (integrator, differentiator, band-pass) depending on what frequency you are interested in and your choice of resistors and capacitors. Thanks!

[@SASandriusSAS]

Thank you for sharing your knowledge.

[@mohammadanbiaislami787]

really good information about active filter .

[@DonHYPER007]

Very Nice explanation. Waiting for more. Would Be Nice if you even explain Amplitude Modulation, and some circuits to this

[@JunaypaserM]

Ini yang lagi saya pelajari. Mantap

[@baydood510]

Isn't the gain Negative? (-R2/R1) For the inverting amplifier, your gain is positive (R2/R1). 6:36

[@toast_recon]

+Salliance This is way old, but since the output voltage is AC, we don't really care about negative or positive. -V is just V phase shifted 180°. If we're only concerned with magnitude the negative sign can be dropped.

[@AhmedKMoustafa2]

Isn't the gain Negative? (-R2/R1) , For the inverting amplifier, Also, In Microelectronics circuit analysis 3rd book says that the voltage transfer function of a high pass filter is: T(s) = (sRC)/(1+sRC) however, the voltage transfer function of a Low pass filter is: T(s) = 1/(1+sRC) Looking forward to hear from you "humanHardDrive"

[@musicamplifier16]

in audio theory,it is not matter if the gain is positive or negative.Also your and his voltage transfer function from video is good

[@AndrewBrown-mo6qm]

Thanks for the vidoe great help mate !!!

[@chronobot2001]

great video!

[@nitinmaurya8805]

which application u have used for doing all this.?? please tell me. thanks😊

[@photon2724]

tats an inverting op amp. So wont the output wave be inverted?

[@shinnysinsin]

thank you, great tutorial, what's the name of the software you're using to "draw"? it's great!

[@terencekaye8]

Great jon HHD,,,was wondering about the second bandpass filter,,does it matter what order the Hi or lo sections are placed,,, Also I noticed your connecting your inputs to the Negative or inverting input of the op amp,,,can you tell me why,,and why not the input on the Positive or non-inverting input,, Also what about second order active Hi Pass Lo pass and Band pass filter calculations. Thanks for the great video,

[@natalioramirez6240]

Why is the capacitor not affecting the gain?

[@AaronB99999]

The gain is for the "flat" part of the frequency response curve -- at these frequencies, the capacitor has no impact on the circuit and the gain is determined entirely by the resistors.

[@KiR_3d]

oh... i wish to find an article or a video about different analog filter _models_ . Is it somewhere? I'm worrying that Steiner-Parker... is not a filter type but may be a kind of different Sallen-Key filter... Can it be?

[@danhle1032]

at 5:18 you say not to change amplitude on opamps? what's the amplitude refer to? is that the same as voltage?

[@o.t.powell1142]

In your op-amp low pass filter, what do you mean when you say zero bias? Your still biasing the op amp normally with external power right? If you have zero bias how does the op-amp have power to operate?

[@Captain_Rhodes]

does the fact that its also an integrator mean that audio will be distorted?

[@AaronB99999]

An integrator is also a low-pass filter. Audio won't be distorted but the higher frequencies will be reduced in volume.