You are a savior! Been tryna synthesize sine waves on a pc speaker using templeos and this is one of the rare gems of resources that has actually been helpful🙏 Thank you, Godspeed
Low pass RC filter work best when signal at main frequency is reduced with 3 dB. This mean two times. So after first stage signal to be 2,5Vpp, after second 1,25 Vpp and on exit 0,67 Vpp. Next transistor stage will need to have amplification 8 times to restore signal to 5 Vpp. As well I recommend to reduce values of condensers by two. 100 nF , 47nf and 22nf. Like this will be easier to adjust the filter.
Great tutorial and I love the white board used to hold cardboard components; for some reason it's a lot more intuitive when you stick "physical" components on a white board as opposed to using LTSpice!
Your videos are great, I have self taught myself to an intermediate level just using your videos. You should know that you have really helped someone out and I am extremely appreciative to your great videos where you reason and think logically about why the circuits behave the way they do.
You would use pwm at a carrier in the khz driving a full-bridge inverter then filter the output with an LC filter to create your low frequency smooth sinewave 👍
Man your videos have a way of just clicking for me. I’ve just assembled a QRP Labs signal generator and wanted to produce a sine wave. The trimmer pots idea is brilliant. My square wave output has some overshoot and ringing, it will be interesting to see what happens to it through this filter network. Onto your updated version of this video.
Hope you are ok buddy, it been a long time since you posted, this is some of the best content I’ve ever watched. It would be amazing to see new videos.
Hi, does the same setup of filters change the shape of the wave if the frequency changes? I am planning to make a small synthesizer with 555 timer and I want to hear nice sinewave.
do you have any video on converting cheap modified inverter to pure sine wave? or if possible is it worth it? mainly asking because modified inverter is much much cheaper than pure sine wave inverter, thanks
I'm a bit of a noob, but will the smoothness of the sine wave be affected by an increasingly higher current load ? Let's say I want to convert my 1100W modified square wave inverter to a sine wave. Can I use your method ?
Thanks, this was really well explained. If you’d prefer not to look like you’re working in Rasputin’s call center, consider a shotgun mic and a Zoom H4 (or something similar). Easy to use/setup and sounds great. If, on the other hand, it’s all part of your jam, then please disregard that-you do you, boo.
I hope you doing well buddy. I joined your discord and seen you message... you seemed like a super cool guy very interesting videos also. Get well soon yea 👍
Some time ago i galaxy far away (Europe) i was doing that and measuring with soviet made crt scope. The interesting part was to convert the sine back to sw. The 3rd thing was to offset it to negative and positive
Do anyone make a small board or board and chip set to make a true sine wave ?? What is the range of a sine wave to be considered accurate ???? Thanks Simply Put too. Peace
Very cool, always wondered how capacitors worked in guitar amplifiers/effects pedals to shape the tone, this pretty much explains it. Although there you want a funny shaped wave because they sound good, well depending on your preferance. Theres a guitar pickup company - fishman who makes these new pickups , everyone says sound HD in comparison to what we've had so far. I wonder if they're just giving a better signal so all the filtering thats amps do doesnt affect it as much. Improving the source somehow so we have less loss of information and a better, clearer soundas a result. Because it seems to me that all these capacitors take soemthing away, which is fine if you have lots of bad stuff to take away, but why not just improve the source so theres less filtering needed, which i understand isnt always possible and why this video exists and is very cool. Turning squares into hip smooth waves ? ... magic.
It would be better to look up some circuit diagrams for actual inverters. I plan to do videos on that topic, but I haven't yet, and you'll be better off with a purpose-built circuit.
Filtering doesn't change the frequency, just the amplitude and shape. The original square wave determines the frequency. (I have a newer video on this topic. You should watch it instead. It's linked in this video.)
yes, that would be called an LC low pass filter. L=variable for inductance and C=variable for capacitance. the inductive elements in the filter must be rated for roughly 2x the current to be drawn, and the capacitors must be rated about 2x the applied voltage. I don't want to go too far down the rabbit hole, as the theory and practical circuit design gets pretty complex, so I recommend you look up a part called, "ac common mode noise filter" These have a pre built low pass design, and are considerably easier to use....👍
I don't know how a guitar pedal is structured internally, but if it is a variable resistance, then yes. If your pedal is powered and is putting out a voltage, you'll need to use an ADC, or an analog pin (which is connected to an ADC on the microcontroller).
Literally any type of wave, yep! Every single waveform that exists, no matter how complex, is a combination of waves of different frequencies, and the lower the frequency, the bigger part of the overall wave it'll be. I'm planning on doing a new version of this video in the near-ish future with my newfound knowledge of op-amps, but basically, you can take any wave (other than just plain DC, of course; it has to be some sort of up-and-down wave) and keep passing it through low-pass filters and amplifiers to eventually get a sine wave.
An L/C (Inductor/Capacitor) low pass filter is more commonly used when currents are required to be above a couple hundred milli-amps. Think low pass crossover for speaker systems.
It just depends on whatever voltage the signal is and what is the maximum current you want coming from your signal source. Just use your standard V=I*R and P=V*I for wherever it is in your circuit.
@@simplyput2796 is discord a website or something??? I don't use social media ya see so I'm not informed about the different ways to chat with like minded folks. Please could you message back. Thanks.
You might try a band pass filter, where a capacitor is connected in series with the resistor, the other end through another identical capacitor to ground. Tune the variable resistor to get the time constant necessary for the frequency of the square wave. Fewer elements, and, preserve even a greater percentage of the amplitude of the square wave generator. Capacitor-resistor-capacitor. Measure across the capacitor connected to ground. Not only will it be much more efficient, but, i'll bet you'll get even a more convincing sine wave. In fact, I think I'll turn on my oscilloscope right now!
@@simplyput2796 I goofed up! in that series, a resistor needs to be placed between the second capacitor and ground. that becomes the hi pass filter. I did fire up my scope, and while my circuit did create a roll off on high and low, your circuit actually worked better, for taking both edges off the square wave. I also ended up with 1/3 amplitude.
I have a predator gas generator that puts out a modified sign wave if you could build a unit that I could plug in and change it to a pure sign wave I would buy one , you could start a little business out of it, especially if it was not to expensive.
New version of this video, with a better circuit and its diagram, if you're interested: ruclips.net/video/iupxNRUgZuk/видео.html
Sir I have never heard a better taught class on electronics as you.
Your Awesome.
An excellent demonstration and presentation AND no annoying adverts every 20 seconds, thank you
Quite honestly the most informative and easy to understand class on filters I have ever had!!!!
Also I
You are a savior! Been tryna synthesize sine waves on a pc speaker using templeos and this is one of the rare gems of resources that has actually been helpful🙏 Thank you, Godspeed
Dude. Thank you. You've clearly got that rare gift for simplifying the complex.
You are a living breathing impedance matching network ;-)
this is a very rare high quality teaching / video, thank you
Dwarves from fantasy world usually doing mining and other staff. Modern dwarves doing electronics engineering. Nice!
Your very good and clear at explaining things. I'm going to subscribe and I hope you keep the channel going👍👍
Damn! Now that was interesting. A "ah-ha" moment for me. Thank you 👍😁 Subbed.
That was awesome! Thanks so much for your willingness to share and teach.
Like so much your explanations and your english speaking is very clean.
Excellent super cool video. I enjoyed this greatly. Thank you; it's appreciated.
Thats the best Class i've ever had!! Thankss
Low pass RC filter work best when signal at main frequency is reduced with 3 dB. This mean two times.
So after first stage signal to be 2,5Vpp, after second 1,25 Vpp and on exit 0,67 Vpp. Next transistor stage will need to have amplification 8 times to restore signal to 5 Vpp. As well I recommend to reduce values of condensers by two.
100 nF , 47nf and 22nf. Like this will be easier to adjust the filter.
Great tutorial and I love the white board used to hold cardboard components; for some reason it's a lot more intuitive when you stick "physical" components on a white board as opposed to using LTSpice!
Thank you for the easy way to explain. You deserve million subscribers
I just discovered your channel and I really like your presentation. Subscribed!
extremely useful video, made me understand filters a lot better. thanks
Very good and highly appreciate your efforts ❤
I like your down in the weeds method of this subject matter. Thanks
Brilliant tutorial and demonstration.
Your videos are great, I have self taught myself to an intermediate level just using your videos. You should know that you have really helped someone out and I am extremely appreciative to your great videos where you reason and think logically about why the circuits behave the way they do.
If you used his videos, you didn't teach yourself. HE taught you. You're no autodidact.
u are the best, i understood everything from you
Excellent video, thank you sir.
Very important. Thank you
Great demonstration Thanks
Wow!!! Amazing video!!!..Congratulations and thank you very much.
Did noone else notice the huge hole in the headset? amazing.
awesome info though. you explained it so well.
Wish I found this my junior year. So good!
Nice work. I've been thinking about a variable frequency drive for a couple of years. Creating a 60 Hz sine wave is a great tutorial.
You would use pwm at a carrier in the khz driving a full-bridge inverter then filter the output with an LC filter to create your low frequency smooth sinewave 👍
Man your videos have a way of just clicking for me. I’ve just assembled a QRP Labs signal generator and wanted to produce a sine wave. The trimmer pots idea is brilliant. My square wave output has some overshoot and ringing, it will be interesting to see what happens to it through this filter network. Onto your updated version of this video.
Thank you for your Very imformative video !
Hope you are ok buddy, it been a long time since you posted, this is some of the best content I’ve ever watched.
It would be amazing to see new videos.
Small correction: They're 2-megaohm potentiometers, not 500-kiloohm (kilohm?). A rather striking difference!
So helpful. As opposed to 15 other videos on this topic from so called "pros" in the field.
Hi, does the same setup of filters change the shape of the wave if the frequency changes?
I am planning to make a small synthesizer with 555 timer and I want to hear nice sinewave.
Man you explained that first part better than I've heard it ever explained before...
LOVE YOUR HAIR AND EXPLANATION. WHAT IS BETTER TO USE IN HIGH FREQUENCIES; SINE OR SQUAREWAVE TO INDUCE HIGH POWER APLICATIONS?
Comic Book Sore Guy does Electronics...I love It.
do you have any video on converting cheap modified inverter to pure sine wave? or if possible is it worth it? mainly asking because modified inverter is much much cheaper than pure sine wave inverter, thanks
22 minutes...... Eyes were only on screen.... Wonderful explanation.
I'm a bit of a noob, but will the smoothness of the sine wave be affected by an increasingly higher current load ? Let's say I want to convert my 1100W modified square wave inverter to a sine wave. Can I use your method ?
Is there any free software that can be used to perform these experiments including the signal output display?
ya know how you said ya use higher to lower cap size at the beginning of a low pass filter,, would you use lower to higher on a high pass then????
Can you make a video regarding the the flow of current in air-conditioning mother board inverter ?thanks in advance!
Could I try this with the Espotek labrador? Probably not right?
What is the effect of frequency on the sine wave, Simply Put? If you ran a 1KHz signal through your low pass filter, what would it look like?
So you are saying if I make a inverters and need sine wave all I need is capacitor and trimmer to get perfect ac
You do a great job explaining
Thanks, this was really well explained. If you’d prefer not to look like you’re working in Rasputin’s call center, consider a shotgun mic and a Zoom H4 (or something similar). Easy to use/setup and sounds great. If, on the other hand, it’s all part of your jam, then please disregard that-you do you, boo.
Oh thank you! Simply Put indeed.
Excellent video ! I learned much !
I hope you doing well buddy. I joined your discord and seen you message... you seemed like a super cool guy very interesting videos also. Get well soon yea 👍
that was excellent, thanks!
Thank you, sir
Some time ago i galaxy far away (Europe) i was doing that and measuring with soviet made crt scope. The interesting part was to convert the sine back to sw. The 3rd thing was to offset it to negative and positive
Do anyone make a small board or board and chip set to make a true sine wave ?? What is the range of a sine wave to be considered accurate ???? Thanks Simply Put too. Peace
I want to filter a square wave of 50 hz frequency 12 to-12 Vpp .... Can anyone plz guide me
Hope you're OK, and hope to hear/see from you sgain.
Well done
Thank you very much.
I like that smooooooth wave @ 19:14.
Would like to have seen an example for a higher power system, like a 3kw modified square wave inverter which is smoothed out to pure sine wave.
Very cool, always wondered how capacitors worked in guitar amplifiers/effects pedals to shape the tone, this pretty much explains it. Although there you want a funny shaped wave because they sound good, well depending on your preferance. Theres a guitar pickup company - fishman who makes these new pickups , everyone says sound HD in comparison to what we've had so far. I wonder if they're just giving a better signal so all the filtering thats amps do doesnt affect it as much. Improving the source somehow so we have less loss of information and a better, clearer soundas a result. Because it seems to me that all these capacitors take soemthing away, which is fine if you have lots of bad stuff to take away, but why not just improve the source so theres less filtering needed, which i understand isnt always possible and why this video exists and is very cool. Turning squares into hip smooth waves ? ... magic.
You stated that the entire circuit is energy inefficient, what would make it energy efficient?
Very cool, a question, is there a 90 degrees phaseshift from input to output? 21:26
This is awesome
i wish you all the best !
Xin chào bạn có thể giúp mình một vấn đề được không.
excellent video!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Why don't you turn on the FFT on your scope. You might see the harmonics dropping off as you bring the corner frequency down.
Thank you
After the op amp stage, could this be used as an inverter to run an a/c fan (or such low amp device)
It would be better to look up some circuit diagrams for actual inverters. I plan to do videos on that topic, but I haven't yet, and you'll be better off with a purpose-built circuit.
Great video, how can I calculate the R and C values without variable resistors? I want to achieve a specific frequency
Filtering doesn't change the frequency, just the amplitude and shape. The original square wave determines the frequency. (I have a newer video on this topic. You should watch it instead. It's linked in this video.)
If I am interested in smoothing out modified square waves from an inverter, may I replace the resistors with inductors?
yes, that would be called an LC low pass filter. L=variable for inductance and C=variable for capacitance.
the inductive elements in the filter must be rated for roughly 2x the current to be drawn, and the capacitors must be rated about 2x the applied voltage.
I don't want to go too far down the rabbit hole, as the theory and practical circuit design gets pretty complex, so I recommend you look up a part called, "ac common mode noise filter" These have a pre built low pass design, and are considerably easier to use....👍
I love your videos but why do you have an edit between every sentence?
I dont know how to thank you sir😌
Can you apply this to a guitar pedal? Take the signal from the guitar and make it into a sine wave?
I don't know how a guitar pedal is structured internally, but if it is a variable resistance, then yes. If your pedal is powered and is putting out a voltage, you'll need to use an ADC, or an analog pin (which is connected to an ADC on the microcontroller).
You said that a sine wave can be done from any type of wave so, can I get a sine wave from a triangular wave?
Literally any type of wave, yep! Every single waveform that exists, no matter how complex, is a combination of waves of different frequencies, and the lower the frequency, the bigger part of the overall wave it'll be. I'm planning on doing a new version of this video in the near-ish future with my newfound knowledge of op-amps, but basically, you can take any wave (other than just plain DC, of course; it has to be some sort of up-and-down wave) and keep passing it through low-pass filters and amplifiers to eventually get a sine wave.
hi
how can i change 2000w square signal into sine wave...or what is the valuse of R & C
An L/C (Inductor/Capacitor) low pass filter is more commonly used when currents are required to be above a couple hundred milli-amps. Think low pass crossover for speaker systems.
Using this 3 stage low pass filter turns my 220v square wave into 7v sine lol, I cant use this
Super interesting
One question, what's the value of the safety resistor..
It just depends on whatever voltage the signal is and what is the maximum current you want coming from your signal source. Just use your standard V=I*R and P=V*I for wherever it is in your circuit.
Content is amazing⚡👍. Please consider fixing the sound problem. High freq. Sounds (s,c) are too loud
Where have you been all my life???
Cool
How to convert 50 hz 380 V three phase AC square Wave Voltage to Pure Sine wave
The pro will say it, but many stages of low pass filters maybe ?
Hypno toad brought me here
👍 thankyou
Hi can you make drawings a bit bigger I can't see
hi, please how can i reach you ?.
For short questions, the comments section here is a good place. For longer discussions, Discord (linked in the description) is much easier.
@@simplyput2796 is discord a website or something??? I don't use social media ya see so I'm not informed about the different ways to chat with like minded folks. Please could you message back. Thanks.
Pls come back
You might try a band pass filter, where a capacitor is connected in series with the resistor, the other end through another identical capacitor to ground. Tune the variable resistor to get the time constant necessary for the frequency of the square wave. Fewer elements, and, preserve even a greater percentage of the amplitude of the square wave generator. Capacitor-resistor-capacitor. Measure across the capacitor connected to ground. Not only will it be much more efficient, but, i'll bet you'll get even a more convincing sine wave. In fact, I think I'll turn on my oscilloscope right now!
Sounds like a great idea for a future video. I'll make a note.
@@simplyput2796 I goofed up! in that series, a resistor needs to be placed between the second capacitor and ground. that becomes the hi pass filter. I did fire up my scope, and while my circuit did create a roll off on high and low, your circuit actually worked better, for taking both edges off the square wave. I also ended up with 1/3 amplitude.
Turn up this preset; not capacitor.
I have a predator gas generator that puts out a modified sign wave if you could build a unit that I could plug in and change it to a pure sign wave I would buy one , you could start a little business out of it, especially if it was not to expensive.
That is what I am looking for too.
Who's filled the power losses!
A simple, ty
Bit jumpy on the video.. But straight forwards.. Shaping with resistors and capacitors..
Beard bro. I discovered you today. I will scan you from ear to ear.. meanwhile put some audio amplifier video