Passive RC low pass filter tutorial!
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- Опубліковано 23 гру 2010
- A tutorial on passive low pass RC filter circuits, and how they affect the frequency content of signals. An example of an RC filter that could go before a subwoofer's amplifier is given. The sound clips are from Pendulum's Slam in Hold Your Colour. More videos at www.afrotechmods.com
- Наука та технологія
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*Sits here frustrated studying for exams.
*Hears Pendulum - Slam
*Instantly becomes focused
Relatable
I came for the electronics, stayed for the Pendulum.
I don't know why I pay tuition fees when guys like you teach me more in ten minutes than I learn in a whole lecture. Thank you!
1.Very good explanation. 2. We can apply the knowledge as we want to. 3. In-depth and very clear explanation. Excellent.
It's 2024 and this video is still the best one explaining the topic ! PLEASE restart posting videos, community needs such high quality material.
Ya know, I'm a college physics student and i swear (not downing my professors they are great and I probably wouldn't have been able to pick up this stuff so well if it wasn't for them) that I have learned more from you than in my now 4th year of physics classes. You've helped with numerous of my "just for fun" projects. Thanks! And keep up the epic work.
+1 for the Winamp
On behalf of everyone who sees your videos, a big mega thanks to you, from all of us.
You put it all together for us, and make the impossible to learn, possible to learn.
If you had to learn this from some tenured professor in the fake education system we call universities, it would be impossible to learn anywhere near as much.
Your videos all have great production values, and you have an excellent voice on top of that.
Your videos inspire all of us to keep learning, and you make it easy.
Just wanted to say that your electronics videos are the most helpful I've seen anywhere! Thanks a lot for them, and please keep them coming!
I spent freaking two quarters to find out what the hell the different filters do and learned nothing form the class. but this video explained me what I need to know. Thank you so much Sir Afrotechmods. Keep up the good work!!!!
+1 For Pendulum
OMG WINAMP! The memories...
Most practical & efficient presentation of the subject. Provides conceptual background to dive into more mathematical treatment.
that was one of the most satisfying video tutorial ever....everything you said were on point and the use of practical approach instead of using equation stuffs just make this video so easy to understand. A big thanks and hug to you for creating such helpful video.
Wow! I ain't seen winamp since the 2000s and I ain't heard Pendulum in almost that long too. Kudos bro, kudos!
Very informative! I study electronics and I am finally beginning to understand this subject. And this video and explaination makes it way more clear to me.
BEST MOST SIMPLE "EXPLANATION" OF CROSSOVERS AND CROSSOVER "CAPACITORS" OUT THERE !
It is amazing that no one else can just explain this so simply ???
Most every question answered !
GOOD JOB !
Rick - Southern California
Man, your videos are QUALITY! Honestly, from all my experience from universities, books and other tutorials, your videos make the BEST intuitive sense. Excellent content, you can communicate the content in an EXCELLENT manner and very funny too! And most importantly, the mix of theory and practical stuff. Amazing channel, will await for more!!!
Yes surely good...
That classic winamp ive been using for many many years and that put a smile on my face.
This was great, thank you. I used a RC filter to reduce noise on the 3.3v rail of my raspberry pi. It dropped the ripple from 25mv to less than 1mv.
Thank you. Thank you. Thank you. I was struggling with the damn thing for days! You've explained it so elegantly in such a short amount of time! Awesome!
Can you help me please i am playing 8ohm su woofer 400watts rms i want it to play 40hz down?IM CONFUSED what capcitor to use.
Daniella Henry
I'm not sure i understand what do you want to do, but i presume you want to filter out audio frequencies above 40Hz? I don't really work with audio but from what i understand you need to find out what the electrical parameters of the amplifier input are, as well as the signal source ones, and choose an appropriate resistor, so that your signal will transmit properly. When you know what resistor to put, choose a capacitor with c = 1 / (2*Pi*R*fc). My guess is that a 1k resistor might be enough. Then you'd need about a 4uF capacitor. Filtering is done on the pre-amp side i believe, not after. But like i've said...i'm no expert at this. For a professional solution you'd have to consult a professional.
Best videos about on electronics on youtube
I'm doing these in Electronics at the moment. I already knew the basics, but thanks for the rest - keep the great videos up.
Wow... another awesome tutorial... I've learned so much from watching these vids... It makes it so easy to understand the concept.
What I used for a treble roll off filter was a 0.01 mfd capacitor in series with a 500,000 ohm potentiometer across the transformer out of the headphone jack of my hp XP windows desk bound computer. I got the parts from an industrial electronics store bin.
I used that as an auxiliary control. That fed an amplifier, which fed a parametric equalizer. It was just a whole lot easier to take my hand and turn the highs up or down, rather than fiddle around and go into the computers dedicated audio equalizer, which was optimally set.
It works great. When the highs go down, the bass goes up a little. I'm mainly concerned about speech intelligibility in movies that I watch.
I mounted the little RC circuit in a small plastic box. I like it because IT'S HANDS ON! I don't have to go through the keyboard commands.
I really appreciate your effort for making such useful videos.
Wow, I just say wow when I've leanred something new even years are gradualting engineering.
Thank you verymuch for this video! Explains everything in a clear, easy to understand way. THANK YOU!
Amazing video! you explain it so well and you even made this boring topic super interesting!
Thanks a million
This is the explanation that I was looking for.. I wanted to filter out mobile incoming call frequency from my audio amplifier.. And this tutorial got me to it.
You got my thumbs up for putting Pendulum music!
Insane explanation, best enough to clear out doubts
BANGING explanation of RC low pass filters .......!!! Love it !!!
Excellent as always, and always so practical!
sir yr video on RC LOW PASS FILTERS TUTORIAL
An excellent video of the BEST quality that i have come across in my life. I can never forget this video because of its outstanding features like CRT viewing, hearing music variation at different frquencies, Practical demonstration of components and calculation, ideal graphs and Practical one, such a clear explanation of theory, what to say and what not to say. Very well made video.
thank u so MUCH
s.vatsa India
writing my dissertation at the minute thank you! great help and great channel
Really helped me understand, I'm with seth, I've been at Access to Music college for 3 years and i've learned more in this video then i have in all 3 years at college :L Really good, thanks alot man :)
Best example song for sure i love Pendulum
Super awesome video.. full of knowledge and way too different from bookish way of describing RC's. Thank you.
You deserve a medal
Really useful and the practical demonstrations were helpful, thanks.
Great as always! I've been waiting for you to make a filter video. Thanks!
The fact you played pendulum is an insta-thumbs up
aaaahh, takes me back to highschool... Thanks for these vids man!!
Helpful, instructive video, thanks for making!
BEST... TUTORIAL... EVER. And great song choice!
wasn't expecting pendulum when doing my circuits hw! haha thanks brother
afro tech mods sharing quality music, Im gonna add it to my playlist
Your videos are the best! Thank you
Nice. I had both an original and an unorignal power supply (9V output) for a guitar pedal (distortion pedal), but the unoriginal power supply made this guitar pedal generate a high pitch noise which wasn't there with the original power supply. For fun I used a 120 ohm resistor with a 10 uf capacitor and then connected the pedal to the filtered 9V - lo and behold - all the high frequency noise vanished.
I'm still sticking to the original power supply, but this sure was an interesting experiment 😃
Excellent tutorial, keep up the good work.
Very clear. Thank you. On to high pass and LC.
very nice example of low n high pass filter.. with a win amp :)
Brilliant vid. Cracked up at 6.23
Thumbs up because of 6:19 and because this is actually a good explaination
Thanks
simple and straight to the point. thanks
AAAAHHHH PENDULUM!! rock it, afro
this video deserves double like
Brilliant tutorial. Every other one I've seen or read just uses random resistor values. Your's is the only one that states WHY you're using those values. Sub'd
Thanks for saving my life from high frequencies!!!!! Great vid
Good vids, keep it coming. I learn a lot from your vids.
very good tutorial, i learned so much
BEST TUTORIAL EVA!
Thank you, your videos are very helpful.
You're the best! Thanks for sharing!!
Thank you so much!!! Explained beautifully
This was so helpful. Thank you
Maximum points for using classic winamp. :D
Thanks for the videos Afro, you rock.
Best. Anonymous. Video. Ever! You guys really do help the world
i learned more from this mans vids than i ever have in electronic classes.
Great video, I was not able to understand this whole topic, but after watching your video. :D
Simply amazing.
Thanks for your videos where people founds many useful informations :)
Спасибо! :)) Блестящее эксплэнэйшн (объяснение) 😍
Great tutorial 👌
The last comment about cascading filters, there's an important concept to understand. A low pass filter's cut-off frequency is defined as the frequency at which the amplitudes is down by 3dB. If you put two of the same frequency filters together, isolated by a buffer to prevent interactions, the output will be down by 6dB at the cut-off frequency. Therefore, if you need a sharper rolloff, but need the cut-off frequency to be the same, it's better to use an active filter. Also, Spice is a good idea if you don't know exactly what you're doing, and even if you do, it's useful to check your work.
excellent tutorial.
you are awsome , make things so clear best Kurt
thanks, your videos are really helpful.
@judgenap It's a cheap and easy way to get DAC functionality from a microcontroller
thank you so much.. Deep down from my Heart... AWESOME
Really good explanation!
This is amazingly explained! I have to write a paper about an experiment about high pass and low pass filters that I was supposed to do at university but this whole situation has put that on the hold but not the paper I have to write ahaha thankfully there's resources such as this where I can actually see what I would be doing! Thanks!!
Hey buddy...do you maybe have that paper written and would you be willing to share it, as i have to do the same thing too hahaha
@@aljazmarolt This was a long time ago but I'll look over my stuff and see if I find something ;)
@@aljazmarolt I can't seem to find anything :/ And if I did it would probably be written in portuguese (my mother language). I do have some python code using high and low pass filters for optics applications though
Awesome Video!
I LOLed at the soft low pass and high pass xD
Awesome video sir
@frank26080115 You're right. The youtube compression has made them look all weird. In the original render the lines are much more clear. Oh well something for next time.
good and simple explanation
Thanks for this grade tutorial!
excellent video about filters... thanks dude
Your vids are awesome!
Keep it up.
I love pendulum!!!
thanks for making this video!
you're the best, sir
this is perfect video! awesome!
Thanks a lot a man for explaining this thing to me.
very nice.. very useful video
Amazing, great video! Thanks so much for that =)
Keep going your contest is really nice 🔛🔝
thks man for this video..i found it in none of my books
keep up the great work