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- เผยแพร่เมื่อ 12 มิ.ย. 2024
- To everyone who didn't see the 1st video, it's located here.
• Understanding Pulse Wi...
This will be a very detailed explanation of Pulse Width Modulation with lots of real examples taken from a vehicle. There will be lecture and theory and then using a car to prove the examples. The video is a little long, but if you stick with it, you'll know more about PWM circuits that you wanted to know :) Thanks to all who watched the video and hope you enjoy it! - ยานยนต์และพาหนะ
Mr, Stuzman, You teach like a US Navy Electronics Instructor. Your Videos of Electronics are very practical and you teach the real world use of PWM. I have a very theoretical book, very heavy on the Theoretical Mathematical Engineering Electrical Physics: "Pulse Width Modulation for Power Converters: Principles and Practice 1st Edition by these Authors: D. Grahame Holmes and Thoma Lipo. Your video is all we need to know how to apply it in the REAL WORD. These 2 videos on PWM are exemplary.
Thank you very much Roderick!
Very detailed explanation,Thank you sir. You Introduce new topics in PWM for me to learn 🙏🏽
Glad to hear that you found the videos helpful and be sure to have a great day!
God bless you and your family really great video I was struggling to know .I saw many videos but your explanation is best.⭐⭐⭐⭐⭐🕺💐💐💐💐💐🙏🙏♥️♥️♥️
Thank you very much Francis and glad the video was helpful!
That was really helpful. Thanks for the effort
Thank you!
Excellent video. If you use the math channel within Pico you can invert your duty cycle.
Hans Engblom Thank you very much Hans. Yes that's true that I could use a math channel to invert the waveform but I was thinking more of a direct approach of using the duty cycle function itself. And with the ground side switched now at the top, it would probably would have been a little bit more confusing to viewers. It's an excellent thought though for those who would like to use that function. 👍
Those PICO scopes are a fantastic tool. I watched up to 23 minutes, stopped the video and took a nap. 30 minutes later I started the video again and went to the end. You put a lot of work into this and I took most of it in. I hope I can remember half of it. Very well done.
Now that Wyatt is dedication to watch this long video :) I know it's a little long, but I tried to be as detailed as I could so that people could understand the stuff. If they want to learn it, they'll watch it, and if not, well.... Thanks for watching the video and sharing a comment!
Fantastic explanation with a practical example. I felt like I was back in college, learning. Not the beer drinking party part of college. lol Seriously Terry this video should be helpful to many people. Keep up the good work and take care. Thumbs up
Ozzstar it took a lot of work to put it together Glen and maybe it would be helpful to some people. Don't work too hard and stay cool up there because it is getting hot as hell down here. 👍
thank you very much,very very nice video,maybe you make some movie about bias voltages,thank you
Thank you Muhammad and will keep the suggestion in mind!
I knew this video would require some concentration to get the most out of it so apologies for being late to the party. An empty house today so had chance to watch it. Fantastic information well explained. Thanks Terry!
No need to apologize Jonathan, and I do appreciate you taking the time to watch the video as I know it was a long one. Hopefully, folks can get some useful information from it.
Thank you Terry for your time and effort, I appreciate that you went the extra mile in pointing out the why and for what of PWM.
juergen scholl Thank you very much juergen and trust me that it was a lot of effort to put this video together. Glad you liked the video and have a good one.
Great video and comparison between scope & DVOM. You nailed it!
Hayward's Automotive thank you very much Hayward as your comment is very appreciated and thanks for watching the video. 😀
Wow..another great video...thank you
Drews Auto thank you very much Drew for dropping in and sharing a comment and for watching the video. 😀
Thank you SO MUCH SIR,at long last i understand. you are a great teacher.
Mike Beukes thank you very much Mike and glad you enjoyed the video. 👍😀
Great video Terry ! Great job explaining and good info. I'm a week late watching it, had to wait till it was quite enough around the house so I could watch it . ☺
Hey Norman and hope you and the family are doing well! Trust me that I know how it is about quietness around the house. And no need to apologize; hopefully, there's some info that may be helpful :) Have a good one!
Great, in depth, informative video.
Tom OConnor thank you Tom, I appreciate it!
Awesome video! It sure wasn't too long for me. You're a great teacher sir. Think a lot of people that are new to this should watch it. I hope there's more to come. 👍
Hey Dylan, I knew it would be a long one and probably turned a lot of people off. I figured if they were interested in the stuff, they would watch, otherwise, not :) Thanks for watching the video and leaving a comment! :)
Great work my friend. I really enjoy your channel. Keep up. See you next time. Cheers.
Thank you very much Ramon and remember, you got a great channel too :)
Very well done Terry. I didnt follow everything but I know where to look .Holly moley that was a hard vid to do. 👍👍
STEVE ROB thank you very much Steve. And you're right that it was a very hard video to do as it took three different takes across two weeks. I actually had three different shirts on in this video. I probably won't do a video like this for quite a while LOL. 😀
Excellent Terry! 👍
Nick Nicu thank you very much Nick for dropping in and sharing a comment! 😀
Great video. Can you make one explaining everything about transistors?
aroyaldaniel I was thinking about a video series on electronics and will more than likely do transistors a little bit down the road. I had another topic in mind to start with. 😀👍
Hats off to you engineer!
armando nika thank you very much Armando for watching the video and sharing a comment! 😀
For years I've wondered what the advantage of a PWM signal would be over an analog signal. I guess it might be analogous to the situation in radio, where FM radio transmission allowed better transmission compared to AM radio. More information, less noise, and an opportunity for better data transfer. Any other ideas?
Oh, you answered at 30:21, I hadn't got there yet, ha ha. It all comes down to power consumption and heat dissipation.
All true Dave about FM transmission. One of the biggest reasons for better reception of FM compared to AM is that you don't have to worry as much about noise such as from lighting, sun activity (up to a point of course), etc. As you know, AM uses the modulation to vary its amplitude which is quite sensitive to noise. Whereas FM varies the frequency and not the amplitude which pretty much eliminates that noise. Good thoughts in comparing FM transmission with PWM and thanks for dropping in and sharing a comment!
spelunkerd yes that's right Dave! It all boils down to power dissipation which makes the circuit more efficient. Thanks for the comments as it's good to help others learn. 😀
Sir thanks for the goog explanation
Elisa Hachiles Thank you Elisa for watching! 😀
Great video. Thanks for sharing. Will you do more videos on your Buick? As always a great video. Thumbs up. Have a blessed summer.
Thomas Tommy The Buick is next on the list Tommy. And thanks for watching and sharing a comment. 😀
Excellent video. Lots of very good info. Will watch it over and over until it all is absorbed. Enjoy delving into how things work. What model pico scope do you have? Two channel or four? Looking into a two channel which as a DIYer will give me plenty of info. Thanks again keep them coming
Yeah, it's a lot of information Arthur and mike take a time or two to get it all. My scope is the 4 channel, model 4423 which is an outdated one now. The newest one is the 4425 if I remember correctly. Thanks for watching the video and sharing a comment!
Thank you for the great info about PicoScope/Voltmeter looking at the B+ side when showing Duty Cycle.....
So, according to the "meters" they always show Power Side Switched results, is that correct Stuzman?
That is correct Murle!
Great series Terry. It's videos like this that help me further understand what I thought I already understood... if that makes sense. Top notch!
Thomas EXOVCDS Hey Thomas and hope you're doing well! Glad that you liked the video series and maybe there was something of interest to you. 😀 I see that you have posted some videos and I will get to them later tonight. thanks for watching the video and leaving a comment. very nice of you! 👍
Thanks for taking the time to explain this in the detail that you did. I look forward to more in depth electronics videos. Great job - keep it up.
Lookie here! Mr. Vestal has left a comment! Glad you watched it Eric and hope there was something that you learned ;)
How can I find-out if my PWM is Positive or Negative Swithed? Thanks. Chris (eng.cc@frederick.ac.cy)
Take a look at the wiring diagram. If you see a B+ voltage being fed to the load through a fuse, then it's negative side switched. Otherwise, if you see the load going directly to ground, then it's a positive side switched.
@@stuzman52 Dear stuzman, I yhank you very much for the prompt response. Is it possible to send me your e-mail in order to send you a picture of my PWM connections and confirm that this is a Positive Swithed connection? My e-mail is : eng.cc@frederick.ac.cy. I thank you very much. Chris
Great videos as usual. I know this question is not related to this video but maybe you can answer this question. You made a video several years ago on GM Waste Spark Picoscope hook-up, in which you stated that all channels on this scope are grounded (Picoscope Model 4424). Therefore ,you only need to hook up the one lead to your sensor on the other three channels. I understand that. But what happens when your sensor has a floating ground? Ain't those other sensors affected by this?
Hey Steven and glad you liked the video series! The scope I have is the 4423 where all the grounds are tied together as you've mentioned and only one ground lead is needed. And yes, if you have a floating ground on a sensor, you have to pay special attention to this hookup. You could have a no-start scenario with the wrong hookup. Take a look at this video that I made using the 4423 scope on a grounded VRS sensor and a VRS that has a floating ground where both were hooked up to the scope at the same time. Hopefully, the video along with my explanation will make perfect sense to your question :) If not, holler back! th-cam.com/video/KbNE0Uaee1Y/w-d-xo.html
Looked at the video you mentioned as indicated above. Excellent video but still a little confused. I'm getting there. To see full amplitude of the crankshaft signal, would you hook up just one of either the positive or negative side of the crankshaft signal to ground besides using the Math feature of the Picoscope? And if I do that, are you stating that I can only look at one channel because the Picoscope has all four channels grounded?
Also, why do sensors use floating ground like the crankshaft sensor and other use a direct ground like the camshaft sensor in this video? Thanks for your expertise. I really do appreciate it.
Steven Nahulak if you're looking at a VRS type sensor with a floating ground and you want to see the full amplitude, you can do so with one channel. The positive lead of the scope would go to the positive signal and the ground lead would go to the negative side of the sensor which is the one that's floating. However you could not use any of the other channels for another sensor. VRS sensors have the drawback that their amplitude is low with low rpm's such as when engine is idling. By not having the sensor grounded you can double the peak to peak voltage versus one that is grounded. Having a higher voltage ensures that the PCM can read this voltage for RPMs and low rpms and also helps in detecting misfires more accurately. Great question Stephen!