I am an EE student at Cambridge University and I can say that this is the best tutorial I have ever seen in LC impedance matching (parts 1&2 ).I'm not saying our professors are bad, but most of them are busy with research. We need lecturers like you！！！
Thank you so much for your kind words of appreciation. In truth I'm just an amateur hobbyist with a fascination for this stuff but I'm really pleased that you found these videos helpful. That's high praise indeed. All the very best with your studies. Thanks again, Nick
A very well done video Yous will get a lot of hits on his and it will go on for years. It makes the functions of the Smith chart so much more clear,. I cannot praise this video enough Andy
Wow, that was a big and heavy un! I did keep up though, I watched in two goes and it all made a lot more sense than previous lessons from others. I will probably watch the whole series again and take notes. Far from driving me away, you've made the learning attainable and with a practical purpose. Thank-you Nick.👍👍👍👍👍
Nick, thanks for producing this great Smith Chart and impedance matching material. I learned all of this in 1982 with an instructor that you remind me of. It was all done with paper and pencil, an HP calculator, lots of blank Smith Chart paper stock, and no computers or vna. Now I am relearning it with your help, a nanoVNA, and an actual computer. All the work I do is at 63.86MHz if anyone clues into what that is used for! Thanks again.
People forget that the Smith chart is supposed to make visualising these calculations and properties easier. Nearly all the Ham radio operators I know avoid this like crazy, preferring trial and error approach. This is another of your videos that should be considered `compulsory viewing material` Very nicely explained as are all of your instructional videos. I am in the middle of these calculations right now, working on a 2Mtr Kw amp using mrfe6vp61k25h. (Moon-bounce). Can get a little expensive if you don`t calculate before cutting! I repeat what I have said on your earlier videos, it`s great to see someone who is actually building something, complements to you Sir!
Some of my best friends are Smith Charts! After watching the first part on matching networks I figured this second part was going to end up being one of the very best explanations of LC matching on TH-cam, and it is. You speak clearly and completely in good English at the right pace with good graphical representations of simple math and graphs, and then feature good hands-on hardware circuits. Then you add in how-to, and how not-to tips. This is the whole package. Well done. I'm sure this took you quite some time to create these 2 videos. But know that the number of viewers you get will continue to rise every day for years to come because this is good stuff and very educational. I'll be watching this video 2 or 3 times over the next week or 2, and referring other hams to it. You're an excellent Elmer, Nick. Thank you.
Cheers John! Thank you so much for your wonderful feedback. I'm really pleased that it has been helpful. Thank you for your support of the channel. 73, Nick
Thanks Nick, Most peeps think that SWR is everything but you made the point that sources and loads can have reactance and resistance. It is about real power transfer more than matching impedance. Well explained sir.
First of all, I'm not a native Englisch speaking person (so sorry for my linguistic faults). But what a great video. I dived into it with the Smith Chart videos of Alan Wolke (w2aew). They were so helpfull. But seeing this, it is another viewpoint of understanding the magic of impedance matching. It makes youtube a treasure-room for people who are simply interested in RF techniques. I don't understand why you are saying many times that: "You are not an expert", in my opinion you are. Keep up this good work.👌
Mate, thanks for explaining the Smith chart so well, I really appreciated that, having never really understood what I was looking at. Now, whether I actually retain any of it is another matter. Great as always though, thank you. Beers soon!
Hi Nick, awesome video, you bring to light parts of the Smith Chart that I had previously not seen. Using the software provided by Will Kelsey, I have successfully matched larger impedances to 50 Ohm's using multiple 'L' network stages; thank you so much, 73 Bob
thank you for this 2 video about matching impédance just a question how we can mesure the source impédance of the pre ampli, driver , ampli in a hf tranceiver ?
You did a good job as usual, Nick. Also know that your laughter is contagious, ah, I was one of those two you talked about at the end of the video. Ahahaha :) 73
Well done Nick - another excellent video. You have managed to make impedance matching an "interesting" subject. I am much clearer now about the Smith Chart and plan to rethink my antenna matching arrangements. Keep up the good work - 73 Brian G3ZOH
Fantastic eye opener!! I have on L Match I did on a FET amp I am playing with, kinda fiddly on where is placed, but do it right, and it works great!! I certainly know more now, thanks!!!
Thanks. Yes, I take your point about the Smith Chart. Unfortunately this is just the colour scheme that that particular website uses. Thanks for watching. 73, Nick
Love new videos! Also, at the moment I'm having a very hard time trying to learn about impedance and how to correctly couple into the next stage in the superheterodyne receiver I'm developing at the moment. I'd appreciate any help you could give me if you're interested in helping me! Thanks Nick, Nick here :)
This much precision is neither needed nor possible. As the device is moved about, stray capacitance and inductance will vary those in the circuit. Furthermore, component tolerances are typically 10%. You will get less ringing and peaking if Q is lower, but the bandpass approaches will be more gradual. Keep Q well within spec and get within 5% of the characteristic impedance and it will usually work fine.
I think the problem is it doesn't always look that way to the casual observer though. But once you make friends with it then it can prove to be a very powerful and intuitive visual tool. Took me a while though! 73, Nick
Fantastic, sir. Thank you for great series with explanations and content where we can do it to.
You're welcome! Thanks for watching and commenting. 73, Nick
I love the smith chard!😃
A very masterly presentation! 73 Ian G4COL
Thanks very much Ian. 73, Nick
I am an EE student at Cambridge University and I can say that this is the best tutorial I have ever seen in LC impedance matching (parts 1&2 ).I'm not saying our professors are bad, but most of them are busy with research. We need lecturers like you！！！
Thank you so much for your kind words of appreciation. In truth I'm just an amateur hobbyist with a fascination for this stuff but I'm really pleased that you found these videos helpful. That's high praise indeed. All the very best with your studies. Thanks again, Nick
A very well done video
Yous will get a lot of hits on his and it will go on for years. It makes the functions of the Smith chart so much more clear,.
I cannot praise this video enough
Andy
Thank you very much Andy. That's kind of you to say. 73, Nick
I am an RF Engineer, i can say you nailed it.
Please make more videos like this.
Thank you very much. That's high praise indeed! Best wishes, Nick
how to tackle a difficult subject well done
Thank you as always William. 73, Nick
Wow, that was a big and heavy un! I did keep up though, I watched in two goes and it all made a lot more sense than previous lessons from others. I will probably watch the whole series again and take notes. Far from driving me away, you've made the learning attainable and with a practical purpose. Thank-you Nick.👍👍👍👍👍
Thanks a million Ace! Yes, it's not the easiest stuff to cover but pretty useful once you get a handle on it. 73, Nick
No apologies required. The best explanation I've ever seen (and I'm nearly 60).
Thank you very much. 73, Nick
I agree, and I'm 73. 73, John
Thanks John!
Nick, thanks for producing this great Smith Chart and impedance matching material. I learned all of this in 1982 with an instructor that you remind me of. It was all done with paper and pencil, an HP calculator, lots of blank Smith Chart paper stock, and no computers or vna. Now I am relearning it with your help, a nanoVNA, and an actual computer. All the work I do is at 63.86MHz if anyone clues into what that is used for! Thanks again.
Thank you very much Brian. I'm glad this was of some interest to you.73, Nick
People forget that the Smith chart is supposed to make visualising these calculations and properties easier. Nearly all the Ham radio operators I know avoid this like crazy, preferring trial and error approach. This is another of your videos that should be considered `compulsory viewing material` Very nicely explained as are all of your instructional videos. I am in the middle of these calculations right now, working on a 2Mtr Kw amp using mrfe6vp61k25h. (Moon-bounce). Can get a little expensive if you don`t calculate before cutting! I repeat what I have said on your earlier videos, it`s great to see someone who is actually building something, complements to you Sir!
Thank you very much indeed for the positive feedback. I'm so pleased it was helpful. 73, Nick
Some of my best friends are Smith Charts! After watching the first part on matching networks I figured this second part was going to end up being one of the very best explanations of LC matching on TH-cam, and it is. You speak clearly and completely in good English at the right pace with good graphical representations of simple math and graphs, and then feature good hands-on hardware circuits. Then you add in how-to, and how not-to tips. This is the whole package. Well done. I'm sure this took you quite some time to create these 2 videos. But know that the number of viewers you get will continue to rise every day for years to come because this is good stuff and very educational. I'll be watching this video 2 or 3 times over the next week or 2, and referring other hams to it. You're an excellent Elmer, Nick. Thank you.
Cheers John! Thank you so much for your wonderful feedback. I'm really pleased that it has been helpful. Thank you for your support of the channel. 73, Nick
I have been enjoying this 2 part series on impedance matching. Your are a very good teacher when it comes to this stuff.
Thank you very much. Glad you enjoyed it. 73, Nick
Thanks Nick, Most peeps think that SWR is everything but you made the point that sources and loads can have reactance and resistance. It is about real power transfer more than matching impedance. Well explained sir.
Thanks very much Keith. 73, Nick
First of all, I'm not a native Englisch speaking person (so sorry for my linguistic faults). But what a great video. I dived into it with the Smith Chart videos of Alan Wolke (w2aew). They were so helpfull.
But seeing this, it is another viewpoint of understanding the magic of impedance matching.
It makes youtube a treasure-room for people who are simply interested in RF techniques.
I don't understand why you are saying many times that: "You are not an expert", in my opinion you are. Keep up this good work.👌
Thank you very much for your kind words. I'm really pleased you found the video helpful. Best wishes, Nick
Mate, thanks for explaining the Smith chart so well, I really appreciated that, having never really understood what I was looking at. Now, whether I actually retain any of it is another matter. Great as always though, thank you. Beers soon!
Cheers Al. I'll hold you to the beers. Don't faint but I even managed to get to the Club last night. Wonders will never cease! 73 my friend
Thank you for the last 2 videos.
It's been an eye opener and certainly helps me understand why my elmer insisted I find a tentec 238c, thanks!
You are welcome. Thanks very much for watching and for commenting. 73, Nick
excellent video as usual. thanks.
Thank you Radim. I'm glad it was of some help. 73, Nick
Fantastic, this is going to take a few viewings for it to sink in.
Thanks very much Stephen. Yeah, there's a lot of stuff to get your mind around here! Glad it helped. 73, Nick
Hi Nick, awesome video, you bring to light parts of the Smith Chart that I had previously not seen. Using the software provided by Will Kelsey, I have successfully matched larger impedances to 50 Ohm's using multiple 'L' network stages; thank you so much, 73 Bob
Thanks very much Bob and very well done! That's what it's all about - having a go yourself. 73, Nick
Brilliant video, very well explained. Thank you Nick.
Thanks very much Steve! Glad it was useful. 73, Nick
thank you for this 2 video about matching impédance
just a question how we can mesure the source impédance of the pre ampli, driver , ampli in a hf tranceiver ?
Hi Stephane, I do talk briefly about using a NanoVNA to measure impedance towards the end of video No. 49. Hope this helps. 73, Nick
You did a good job as usual, Nick. Also know that your laughter is contagious, ah, I was one of those two you talked about at the end of the video. Ahahaha :) 73
Thanks very much. Your medal is in the post! 73, Nick
Very nicely done set of videos Nick! You taken something I wasn't clear about and made it obvious in hindsight
Thanks very much Alan. Glad they were of some use. 73, Nick
Thank you so much for this series! I've finally understood impedance stuff!
You are welcome. Glad it helped! 73, Nick
Well done Nick - another excellent video. You have managed to make impedance matching an "interesting" subject. I am much clearer now about the Smith Chart and plan to rethink my antenna matching arrangements. Keep up the good work - 73 Brian G3ZOH
Thanks very much Brian. I'm pleased it was useful. 73, Nick
Excellent video . Very clearly explained and great presentation as were Parts1 and the Intro. Regards, Kieron.
Hi Kieron! Thank you very much. I'm pleased the videos were useful. Best Wishes, Nick
Well, you covered more in that hour than usual University lectures, so no apologies needed on the length 😅
Thanks very much. Best Wishes, Nick
excellent!!! many many thanks to you! i wish i have university professors like you. Greetings!!
Thank you very much Juan. I'm so pleased you found it useful. 73, Nick
Fantastic eye opener!! I have on L Match I did on a FET amp I am playing with, kinda fiddly on where is placed, but do it right, and it works great!! I certainly know more now, thanks!!!
Thanks very much Ed. 73, Nick
excelent , thanks for clear explanition about this topic!
Thank you very much. Glad it was helpful. 73, Nick
Excellent content! Thanks.
Thank you very much. 73, Nick
Great tutorial. Top man.
Thanks very much! 73, Nick
It's deep tech videos like these that justify a YT Premium Subscription.
Thanks very much Chuck! 73, Nick
A well done video, however, the Smith Chart on a light blue background is verry hard to see and it might confuse electronics students.
Thanks. Yes, I take your point about the Smith Chart. Unfortunately this is just the colour scheme that that particular website uses. Thanks for watching. 73, Nick
This was amazing
Thank you very much. 73, Nick
So nice thanks sir
Thanks very much. You are welcome. 73, Nick
Love new videos! Also, at the moment I'm having a very hard time trying to learn about impedance and how to correctly couple into the next stage in the superheterodyne receiver I'm developing at the moment. I'd appreciate any help you could give me if you're interested in helping me! Thanks Nick, Nick here :)
Hi Nick. Shoot me an email some time (address on my QRZ.com page).73, Nick
This much precision is neither needed nor possible. As the device is moved about, stray capacitance and inductance will vary those in the circuit. Furthermore, component tolerances are typically 10%. You will get less ringing and peaking if Q is lower, but the bandpass approaches will be more gradual. Keep Q well within spec and get within 5% of the characteristic impedance and it will usually work fine.
Thanks Byron. Yes, calculating a circuit is one thing but building it is quite another! Thanks for watching and commenting. 73, Nick
But the Smith Chart is soooo easy to understand and use.
I think the problem is it doesn't always look that way to the casual observer though. But once you make friends with it then it can prove to be a very powerful and intuitive visual tool. Took me a while though! 73, Nick
briiliant (a belgian guy)
Thanks very much! 73, Nick