As a former math teacher, I'm embarrassed to admit that there is an error in my formula for the calculation of RMS power. The peak voltage should be corrected to RMS (i.e. multiplied by .707) prior to being squared and divided by the speaker impedance......not after :(
@NotMarkKnopfler
6 жыл бұрын
So, about 2.25 watts RMS?
@harbselectronicslab3551
6 жыл бұрын
Thats fine.....it makes some of us feel smarter lol.....another worthwhile video uncle Doug......I get all the young trainee's to watch these, its very helpful :)
@UncleDoug
6 жыл бұрын
Yes, Not Mark, the real value is a bit lower than my flattering portrayal of its awesome output power :)
@UncleDoug
6 жыл бұрын
Thanks, Harb. I always strive to make others feel smarter :):)
@UncleDoug
6 жыл бұрын
Thanks, Gianfranco. We will :)
@kenwinston2245
6 жыл бұрын
Knowledgeable men such as yourself who are willing to take the time to share are rare, and absolutely beyond value to the rest of us . Thanks again sir. You will always have a willing and eager audience.
@UncleDoug
6 жыл бұрын
You're welcome, Ken. Thanks for your very nice comments.
@jeremiahchamberlin4499
4 ай бұрын
This is the best oscilloscope tutorial I’ve ever seen. Took me way beyond what I learned (and taught) in Community College.
@UncleDoug
4 ай бұрын
That's great to hear, Jeremiah. I'm glad it was helpful.
@kennethgroves6552
Жыл бұрын
Uncle Doug is the teacher that we wish we had in school. Thank you Uncle Doug!
@UncleDoug
Жыл бұрын
Thanks so much, Ken :)
@michaelmasin1996
6 жыл бұрын
I alredy know how to operate an oscilloscope, but I still watch these videos just because I love how you teach
@UncleDoug
6 жыл бұрын
Thanks, Michael. I am flattered that you would do so :)
@Cavemannspace
6 жыл бұрын
DITTO! Besides we have to keep an eye open for Jack.
@gt6hudson
2 жыл бұрын
Like wise, uncle Doug really explains amps so well
@d.e.c1609
3 ай бұрын
Same!
@knifeswitch5973
4 жыл бұрын
Well Doug , I’m a 53 year old electrician who never got into electronics until watching your videos. When this covid thing broke out, I decided it was time for a new hobby. So I bought a bench scope, bench meter, a new solder station, a couple of power supplies, variac and a sig-gen. I’ve been watching your vids pretty religiously and you have taught me so much already. I really have to thank you sir. I doubt you’d ever need it but if you ever have mains or premise wiring issues, I’m all ears!
@UncleDoug
4 жыл бұрын
It's quite gratifying to hear that you have put the videos to good, practical use, Mike. Congratulations on your new hobby and best of luck with all your projects.
@KP11520
Жыл бұрын
Now I know why so many others rave about YOUR videos. Thank you!
@UncleDoug
Жыл бұрын
Thanks, KP :)
@aeyb701
10 ай бұрын
When I came across your channel a few years ago I thought this guy must have been a teacher. Your pedagogical skill comes through. With you I simply get it. Glad you’re out there.
@UncleDoug
10 ай бұрын
Thanks so much, AE :) I was a classroom math and science teacher for many years.
@OIE82
2 жыл бұрын
I love Uncle Doug and his videos. Every time I was thinking "but what about..." he answers in the video. God bless Uncle Doug.
@UncleDoug
2 жыл бұрын
Thanks, Luther.....glad to hear it :)
@CraftAero
6 жыл бұрын
Re: AC and DC co-existing within the same conductor. I tied my brain into knots trying to follow and interpret tube amp schematics before I caught onto this principle. Finding that simple key removed the "magic" and suddenly there was light. :)) Years later, I think I still have marks from all the head scratching.
@UncleDoug
6 жыл бұрын
It does seem paradoxical........but truth is often "stranger than fiction" :)
@daveb9370
6 жыл бұрын
CraftAero Same here. I was reading the tube amp books I have, but nobody came out and said it; it was assumed you knew it. Then one day a few years back I was watching Uncle Doug being coached by Rusty (RIP Rusty, we miss you) on this, and BAM! , there it was! The mystery was solved. Thank you Uncle Doug for your great videos. Love the pet cameos too!
@daleburrell6273
3 жыл бұрын
...no brains, no headaches(?)
@Earthstein
10 ай бұрын
Superb Uncle Doug. Thank you. I still miss Rusty.
@UncleDoug
10 ай бұрын
Thanks. So do we.
@CesarVitell
Жыл бұрын
I never post a comment all this years, I follow you since the beginning and see all yours videos. Your a true Maestro. i just want to say one thing and i just want to Thank you for all I have learned from you Oncle Doug. Thank You.
@UncleDoug
Жыл бұрын
Thanks so much for your kind words, Cesar.
@horsthartung4682
3 жыл бұрын
Excellent video.....I bought a Sencore SC61 Oscilloscope and a Tenma 72-455A Signal generator like yours and followed everything you said on this video...I'm soon going to be one of your patrons cause I love your videos and the way you teach....I also like Mr Carlson's Lab videos but there soooo long and a lot of stuff he says goes over my head.
@UncleDoug
3 жыл бұрын
Thanks, Horst. I'm really glad to hear that the videos were helpful. Best of luck with your projects.
@romusromulus
Жыл бұрын
Uncle Doug,how did I ended up here? I was trying to understand how AC is measured by 10x probes. Usually I'm here for amps, this is a bonus info video.
@UncleDoug
Жыл бұрын
I'm glad it was informative, Sahin.
@MrBrymstond
6 жыл бұрын
Uncle Doug+ Very professional. I love the fact you go into detail for the beginners. Most would overlook most of what you do, thank you! This is a real seminar, not the average KZitem video.
@UncleDoug
6 жыл бұрын
You're welcome, Mr. B. I appreciate your nice comments.
@cowasakiElectronics
4 жыл бұрын
Doug. I wish you had been my electronics lecturer! There were so many things that I didn't understand that It took me years to realise. This is probably, no definitely, the best simple introduction to a scope. Again it took me years to work most of this out.
@UncleDoug
4 жыл бұрын
Thanks so much, Darren. We're glad the video was helpful.
@midmodaudio6576
2 жыл бұрын
Thank you for that very detailed explanation and demonstration.
@UncleDoug
2 жыл бұрын
You're welcome, MMA. Glad you liked it :)
@JoseVazquez-qu3yd
7 ай бұрын
Learning one step at a time
@UncleDoug
5 ай бұрын
Always the best way :)
@alanstahl594
6 жыл бұрын
Uncle Doug is a friggin genius !!! I just can't get enough ! These videos are off the hook ! SUPER WOW and many thanx!!!
@UncleDoug
6 жыл бұрын
Wow......Thanks so much, Alan :)
@sting1111
10 ай бұрын
Greetings uncle D! Signal tracing has always been my favorite topic of your videos. Its always good to revisit your award -winning videos. They also offer hi level entertainment and make this subject fun and rewarding when we apply your techniques and solve problems. I want to thank you again.
@UncleDoug
10 ай бұрын
You're quite welcome, Mr. K. Thanks for the nice comments :)
@max79444
3 жыл бұрын
Doug, you have an absolute fantastic bed side manner as we say in the UK. !
@UncleDoug
3 жыл бұрын
Thanks, Bryan......I guess ;)
@brianfletcher9774
4 жыл бұрын
I LOVE your kitties ! Puts a smile on my face when you feature them in your videos. I have a cat myself, his name is Thunder.
@UncleDoug
4 жыл бұрын
Thanks so much, Brian, from all of us :)
@johnkidd1694
Жыл бұрын
Fantastic demo. With the adding I understand now how amplification is possible.
@UncleDoug
Жыл бұрын
Thanks, John :)
@gregpeirce6121
Жыл бұрын
Hi, thanks for the video, very helpful, from UK.
@UncleDoug
Жыл бұрын
You're welcome, Greg :)
@cepwin
5 жыл бұрын
Thank you Doug! Thanks to your videos I was able to get an old Leader 3100a I bought off ebay up and running. Love your cat...beautiful kitty!
@UncleDoug
5 жыл бұрын
That's great news, Cep. You're quite welcome :) Jack says, "Thanks".
@DennisMurphey
4 жыл бұрын
OUTSTANDING, you range of topics is just awesome. I had a scope and signal generator and sold them because i had no idea how to use them properly. Had i seen this video i would certainly keep them to check these homemade Amps. I had not idea how much fun amps can be. Well I will keep looking for bargains. maybe i can get another set of gear. This was great no part 2, Thank You Doug . You may not appreciate that your videos even older ones are helping a whole of folks figure stuff out. I expect even after we are all gone these video will be watched and education even more people. What a great act to do for education. D
@UncleDoug
4 жыл бұрын
Thanks so much, Dennis. It's great to know that the videos are helpful.
@DennisMurphey
4 жыл бұрын
Check your PayPal. Small token of appreciation. Go get an ice cream in your Hot Rod on me. D
@UncleDoug
4 жыл бұрын
@@DennisMurphey Wow.....thanks again, Dennis. Our best to you and yours.
@Delatsch
6 жыл бұрын
I used to hate Thursdays, but it's rapidly becoming the best day of the week.
@UncleDoug
6 жыл бұрын
I generally post videos randomly, the moment I complete them, D; but I guess that Thursdays have been coincidentally picked several times now.
@williamsquires3070
6 жыл бұрын
“10 minutes of theory, and 16 minutes of hands on...” Don’t forget the minute spent looking for Jack! 😻
@UncleDoug
6 жыл бұрын
Yes, and it was a minute well spent :)
@PandemoniumMeltDown
4 жыл бұрын
Well that was a lot of fun from a simple circuit in very capable hands :) Everybody makes mistakes, the important part is to notice and gracefully correct them; making you, sir, a gentleman and a scholar.
@UncleDoug
4 жыл бұрын
Thanks so much, PM :)
@pb7379-j2k
4 жыл бұрын
Fabulously instructive video. KZitem exposes these to me in mysterious order, but I'm glad I finally got to this one! Thank you so much
@UncleDoug
4 жыл бұрын
It's our pleasure, Paul :)
@andersf324
6 жыл бұрын
As far as output transformers, when I have instructed fellow musicians in the past on the concept, and they are staring at me like I am an alien with three eyes and green hair, the analogy of an electronic gear box seems to make the light bulbs come on. The conversion from horse power to torque with a gear ratio to climb a steep hill (and the speaker transducer is a mighty steep hill for the poor power tube) does provide a tactile concept for them. Great video as always, Uncle Doug!
@UncleDoug
6 жыл бұрын
An excellent comparison, Anders, and one to which all automobile enthusiasts can relate. Thanks !!!
@andersf324
6 жыл бұрын
And, as always, we are bound to the irrefutable laws of thermodynamics for conservation of energy. As one parameter comes up, the other one goes down, but the amount of work is still the same. All other variances are in either friction or flux core heating thermal losses depending on the system... Don't get me started on the free energy cooks... Hehe
@UncleDoug
6 жыл бұрын
Right you are, Anders :)
@joemcgraw5529
5 жыл бұрын
your detail in explaining and using it with therory calculations is very informative ,I learned alot about the ossiloscope and how to adjust it for signal tracing ,thank you so much Doug your a Great teacher!!!
@UncleDoug
5 жыл бұрын
Thanks so much, Joe.
@rciancia
6 жыл бұрын
Doug, this video is very much appreciated. It clearly explains what I thought I knew already. Thank you so much..
@UncleDoug
6 жыл бұрын
You're welcome, Ron :)
@stevenjozefik659
6 жыл бұрын
Thanks Doug , This is definitely THE best scope tutorial i have ever seen .
@UncleDoug
6 жыл бұрын
Wow, thanks so much, Steve :)
@Valerifon1
6 жыл бұрын
I thoroughly enjoyed this video! It was just what I needed! I have a couple of scopes but my use of them is very basic. Many thanks to Uncle Doug and to the generous subscriber who donated the amplifier utilized in the making of this video. Using an oscilloscope and tracing a signal for grounding errors and failed components are what I need to see the most. I'm glad to have found this channel and this video - thank you very much Uncle Doug! I've subbed your channel and will become a Patron very soon! All the best - Luther
@UncleDoug
6 жыл бұрын
You're welcome, Luther. Best of luck with your scope education.
@sting1111
3 жыл бұрын
Fascinating stuff as always. Greetings to Uncle and Jack. You get me back into this every winter.
@UncleDoug
3 жыл бұрын
Greetings, Sting. Welcome back :)
@c_b5060
2 жыл бұрын
I learned something new today. Thanks!
@UncleDoug
2 жыл бұрын
Glad to hear it, CB :)
@Guitar5986
11 ай бұрын
These have been incredibly helpful thank you!
@UncleDoug
11 ай бұрын
Glad to hear it, G :)
@philipdonovan6510
2 жыл бұрын
Once again, thank you for the clear/informative video's. For Christmas i'm getting a Siglent 4 channel 100 Mhz scope and I just won bids at work (Zoll Medical - Leader sig gen, Fluke DMM and a 10A/20V power supply) so, I'll have a fairly well rounded home lab bench in a few weeks. Having successfully build and gig with 2 tube amps, it will be nice to finally "see" more deeply into what is going on in each gain/transformer stage of subsequent builds, mods, and some day designs. Thank you!
@UncleDoug
2 жыл бұрын
Congratulations on a fine acquisition, Phil. We hope it serves you well for many years.
@arthurrae7904
4 жыл бұрын
I appreciate your methodical approach to introducing us to a CRO. I particularly appreciated you saying things like BNC Connector, in a manner which could be understood. I am working with model trains and considering purchasing an Oscilloscope. I am hoping that such a device could record a sequence of events, and allow me to play them back. For example, a Capacitor Discharge Unit (CDU) charges a large value Capacitor (I'm using 10,000uF, 63Volts), by directing a supply voltage of 16VAC through a Non-polar 220uF 50Volt Capacitor, thence splitting the flow to two diodes pointing in opposite polarity, which charge the big capacitor. I wish that I could include the schematic, but you can probably get the idea. After a couple of seconds, the big capacitor is changed to about 44VDC, and is ready to supply that jolt of power to a Solenoid, to change points. I would like to be able to record that couple of seconds, and play it back in slow motion. I am hoping that an Oscilloscope could do that for me. Thank you for an interesting presentation. I hope that you, or one of your subscribers might respond to this entry, Arthur
@UncleDoug
4 жыл бұрын
I don't own a digital oscilloscope, Arthur, but some models may be able to record and playback. You'll have to check on Ebay or the internet in general. Good luck. Thanks !!
@AdmiralQuality
6 жыл бұрын
The clipping point is also dependent on the strength of the input signal. Electric guitars don't output anything near +/- 2V, so that's why it went into clipping at such a low volume as the signal generator is overdriving the input compared to what it was designed for. Another great video, Doug, thanks again!
@UncleDoug
6 жыл бұрын
That's a good point, AQ. I thought my input signal was +/- 1V, but you may be right about it overdriving the circuit. You're welcome.
@zaraak323i
6 жыл бұрын
I've always operated under the impression that typical guitar signals are 300mV pk-pk and line-level signals are 1V pk-pk. This is something that I think I picked up from Craig Anderton's book.
@UncleDoug
6 жыл бұрын
I tested a pair of humbucker pickups several years ago (both activated) and got a 0.7V output. To me, 1V is a close approximation that allows for easy numerical comparison.
@simonkormendy849
3 жыл бұрын
I've got two dual-channel Oscilloscopes in my collection of test equipment, one is a solid-state 20Mhz DSE Q-1804 I bought back in the late 90's, the other is an old Telequipment D33R 15Mhz Tube Oscilloscope that needs a new CRT and some restoration work done on it, they really are useful pieces of test equipment to have, once you know how to use them properly, having the ability to see how a circuit is actually behaving is like the difference between working blind and working with 20/20 vision.
@UncleDoug
3 жыл бұрын
That's a good analogy, Simon. Being able to see wave forms and "noise" eliminates the majority of guesswork involved in electronic repair.
@dougtaylor7724
4 жыл бұрын
Amazing amount of information available in one video.
@UncleDoug
4 жыл бұрын
Glad it was helpful, Doug :)
@icemanplaysguitar
6 жыл бұрын
Thanks Uncle Doug! This series has really helped me to utilise my Tektronix TAS 465 in a safer and more useful way. I was unaware of the potential hazards without the use of an isolation transformer, which will be my next purchase. In my opinion, your videos are the most clear & succinct explanations on these interesting topics available on the net. Looking forward to future episodes! Patreoned!
@UncleDoug
6 жыл бұрын
You're welcome, Ice. Thanks for your nice comments.
@isoguy.
6 жыл бұрын
Awsome video, again clearly explained, thankyou for sharing
@UncleDoug
6 жыл бұрын
You're welcome, IG. Thanks !!!
@repairitdontreplaceit
6 жыл бұрын
as always great info for old timers and new tube guys , thank you sir
@UncleDoug
6 жыл бұрын
You're welcome, R & R :)
@PrinceWesterburg
4 жыл бұрын
Thanks every so much for this - I've heard people say you can blow yourself up with oscilloscpes on amps but the same people will tell all sorts of old wives tales about valve amps! Thanks for explaining the sea of controls, fairly simple really. Much obliged Doug!
@UncleDoug
4 жыл бұрын
It's our pleasure, Prince. Don't let the lunatic fringe (we all know you're out there) interfere with your appreciation of vintage amps and oscilloscopes ;)
@carvingbone
6 жыл бұрын
Awesome stuff as always! Yes please more videos about uses and trouble shooting on amps like this! I just scored a similar analog oscilloscope to my tool kit, yay!
@UncleDoug
6 жыл бұрын
Thanks, CB. We will :)
@ka9dad
5 жыл бұрын
I have a nice older tektronix 453 but no practical experience. Thanks for a very clear explanation amd demonstration of the basics I needed to see.
@williamdaniels8128
9 ай бұрын
Enjoyed your teaching active passive termonology also love bld race engines trying to apply this wave form todiesel injector trim scan great teacher
@UncleDoug
9 ай бұрын
Thanks, William :)
@willykanos1044
6 жыл бұрын
Thank you, Uncle Doug. I needed this to trace the signal in my Princeton Clone. Now I know how to do it. You are a good teacher. Jim
@willykanos1044
6 жыл бұрын
Here's what I did: I set the signal generator to make a 1khz signal into a dummy load. Measuring the output of the SG on the oscilloscope I found it was putting out 0.5 volts +/-. The signal passes throught the 12AX7 preamp and the signal at the grid of the 6V6 read just 4V +/-. 4V x .707=2.93. 2.93 x 2.93 = 7.99. 7.99 divided by 8 ohms gives just one watt. That's with amp volume at about 40%. Breakup starts at 5.2 V +/- for 3.38 Watts. I measure the output of the audio transformer at the speaker - same settings - and got 0.6 V +/-. 0.6 V squared is 0.36 which, divided by 8 ohms gives a power at the speaker of 0.045 watts. That explains low audio output. Does it also indicate a bad output transformer?
@UncleDoug
6 жыл бұрын
The signal from the output transformer at max volume before distortion should be much higher than this, as you already know, Willy. Have you checked the DC resistance of the primary and secondary of the OPT, or attempted to measure its winding ratio ? How about a possible short in the voice coil of the speaker ?
@willykanos1044
6 жыл бұрын
I will check DC resistance of both sides of OPT and check back.
@willykanos1044
6 жыл бұрын
DC resistance - primary - common to 5K connection: 494 ohms. Secondary - common to 8 ohm connection 1.3 ohms.
@willykanos1044
6 жыл бұрын
Resistance across speaker connections: 6.4 ohms.
@achdee55
6 жыл бұрын
Thanks Uncle Doug, you are a great teacher!
@UncleDoug
6 жыл бұрын
You're welcome, Harold. Thanks !!!
@jeremywatson3882
Жыл бұрын
Brilliant! So informative
@UncleDoug
Жыл бұрын
Thanks, Jeremy :)
@HipocratesAG
6 жыл бұрын
Thank you very much uncle Doug. This educational series are awesome.
@UncleDoug
6 жыл бұрын
You're welcome, Sergio.
@larrydering1598
4 жыл бұрын
Fantastic instructions with clear and precise information. I really enjoyed this. Thank you for your lessons.
@UncleDoug
4 жыл бұрын
You're welcome, Larry. Glad it was helpful.
@elmakednos
6 жыл бұрын
I like old style cro. I have also the same tech.I also love the frequency generator.You made a perfect combination of the limiter and the isolation transformer.I have enjoyed it and learned something usefull.
@thomasburnett4712
6 жыл бұрын
Thank you, thank you thank you for all the practical instructional videos!
@UncleDoug
6 жыл бұрын
You're welcome x 3, Thomas :)
@GL64
6 жыл бұрын
Yes!!!! That was great. Thank you for doing it! More scope vids please!!!
@UncleDoug
6 жыл бұрын
You're welcome, GL. They're on the way :)
@SDsailor7
5 жыл бұрын
I second that!
@sidarris
4 жыл бұрын
Outstanding videos. Can't compliment you enough :) You are a legend Doug. All the very best from Ayrshire, Scotland :)
@UncleDoug
4 жыл бұрын
Wow.....thanks so much, Alf. Likewise on the good wishes :)
@HitchHiker4Freedom
6 жыл бұрын
Another great tutorial Uncle Doug. Jack is a black ninja cat so his skills shine better under the cover of darkness. 😁 Thanks for your time.
@UncleDoug
6 жыл бұрын
Thanks, CC. Indeed, he is one stealthy guy.
@brd400
6 жыл бұрын
Thanks uncle Doug I like the way you explained it it makes so much sense and it's very fascinating ... I have a basic understanding of electronics and I completely followed what you said and learned a lot thank you
@UncleDoug
6 жыл бұрын
You're welcome, Brd. I'm glad the video was easy to follow :)
@papaw2937
6 жыл бұрын
Thanks for another terrific video, Uncle Doug
@UncleDoug
6 жыл бұрын
You're welcome, Bryant.
@danielcgomez
5 жыл бұрын
VERY informative video Uncle Doug. since I got my cheap scope on Amazon, I've been signal tracing my amps, and having loads of fun!
@UncleDoug
5 жыл бұрын
Thanks, Daniel. That's great news. Keep up the good work :)
@johntempleton6368
6 жыл бұрын
That was a good one. When you overlay the output and input from V1 you can see the amplification and signal inversion. Just like school. I also love to hear the sound of the tubes singing, but never really understood where the vibration to create sound comes from.
@UncleDoug
6 жыл бұрын
I forgot to mention the phase inversion at each stage of amplification. There is a faint, very high-pitched "whistle" from the circuit, particularly with the volume turned way up.......I always thought I was the only one who heard it :):)
@lacorrida
5 жыл бұрын
Best to teacher ever ,master Doug...
@UncleDoug
5 жыл бұрын
You are too kind, Mathieu. Thanks !!!
@abcdefgh-sh6wr
5 жыл бұрын
Simply wonderful explanation, thanks.
@UncleDoug
5 жыл бұрын
Thanks, Nasir :)
@hunt555fish
3 ай бұрын
Great video.
@UncleDoug
3 ай бұрын
Thanks, Hunt :)
@alfonsoincorvaia2595
3 жыл бұрын
Jack is so cool!
@UncleDoug
3 жыл бұрын
He agrees, Alfonso, and says, "Thanks" ;)
@rbmwiv
5 жыл бұрын
Love my tektronix 2232. Owned it first and after learning on the old-school I have a 200 MHz DSO that I use most of the time. But I love how the buttons click. The DSO is not the same. Wish that the modern ones had detents for the knobs.
@UncleDoug
5 жыл бұрын
Thanks for the input, AT.
@robrobinette
4 жыл бұрын
Great video but I don't recommend leaving a light bulb current limiter hooked up to an amp when signal tracing or measuring output. The limiter will feed the amp a low voltage and all amp voltages and measured gain will be lower than normal. Once you verify an amp is powering up normally go ahead and disconnect the current limiter.
@UncleDoug
4 жыл бұрын
Thanks for your input, Rob.
@edwardtaylor1000
6 жыл бұрын
Great video again looking forward to the amp restore and some more of your guitar playing
@UncleDoug
6 жыл бұрын
Thanks, Ed. I'm going to let Jack and Ollie perform the sound check duties for the Trusound video :)
@Sonikbytes
6 жыл бұрын
love this video and how you put everything together to make it safe for beginners like me when dealing this type of circuits. my request is to show how tube tester works. Have a couple of Ampex 620 laying around that need rebult
@UncleDoug
6 жыл бұрын
Thanks, SB. The oscilloscope is demanding enough for now :) All tube testers are different, but I guess it might be worth explaining the basic principles upon which they function.
@stevenjozefik659
6 жыл бұрын
Good Idea , Mine takes the plate voltage from mains potential .. Im in Australia , so I use a 110 volt stepdown tx to isolate , however , if i was in the states , i would be onto Doug's iso ps videos straight away .
@rjprivate
4 жыл бұрын
Thank you for another great lesson uncle Doug. I will have a look if you made more of these scope videos. Never used one but I'm at the point I should. It would be great to see how to find problems in tube amps with it. Jack is an awesome cat, great to see him in your videos. I would sure hire him for amp sniff tests
@UncleDoug
4 жыл бұрын
You're welcome, RJ. Glad the videos are helpful.
@skycarl
6 жыл бұрын
Thanks Doug,,, once again excellent video on this subject.
@UncleDoug
6 жыл бұрын
You're welcome, Carl :)
@murfbass
5 жыл бұрын
You're the best Uncle Doug
@UncleDoug
5 жыл бұрын
Thanks, MB :)
@daleburrell6273
3 жыл бұрын
...and he really knows his stuff-too...(!)
@tonyrink9999
4 жыл бұрын
Great video. Learned a lot. Thanks for sharing.
@UncleDoug
4 жыл бұрын
Glad it was helpful!
@AnalogOpher
6 жыл бұрын
Amazing tutorial. Amazing teacher.
@UncleDoug
6 жыл бұрын
You are too kind......Thanks, AO.
@juliuscaesarrimando142
4 жыл бұрын
Subscribed Sir...very informative. Thank you Sir.
@UncleDoug
4 жыл бұрын
Thanks and welcome to our channel, Julius.
@Steve_Just_Steve
6 жыл бұрын
Excellent! Learned a TON! Thank you
@UncleDoug
6 жыл бұрын
That's good to hear, Steve :)
@ImTheReal
6 жыл бұрын
Awesome! No more scared about Oscilloscope. Great teacher, really easily to understand. I was wondering here... If you start to talk about space travel using these old amps, probably we'll learn some cool things. XD
@UncleDoug
6 жыл бұрын
Thanks, Nuno :)
@JayanthookDass
5 жыл бұрын
Thank you very much for this video, so well explained. I'll definitely wait for your forthcoming videos. Regards!
@UncleDoug
5 жыл бұрын
You're welcome, Jay. I hope you know, we have already posted over 200 videos for you to watch while waiting for our next new one :)
@peetena1481
6 жыл бұрын
I eagerly await each and every performance by the great Jack (hairy) Catdini, master of illusion, escape and international cat of mystery.
@UncleDoug
6 жыл бұрын
As Jack's fame increases exponentially, Peete, it becomes apparent that soon I will be working for him.....rather than the other way around :)
@d.e.c1609
3 ай бұрын
Jack's a beast!😂😂
@UncleDoug
3 ай бұрын
Yes, he is, DEC......but a lovable one :)
@d.e.c1609
3 ай бұрын
@@UncleDoug Indeed!😊
@johnwrench4speed
6 жыл бұрын
Thanks for the video. They are very informative and enjoyable. I am very familiar with the use and application of multi-channel DSOs (e.g., Snap On: Vantage, Vantage Pro, Modis, and Verus; and PicoScope) in connection with automotive diagnostics (injectors, ignition coils, fuel pumps, cam/crank sensors, in cylinder pressure diagnosis, et al.). The Snap On offerings evolved to be very good. However, the industry standard, in my opinion, has become the PicoScope because of its many capabilities. It is my understanding PicoScope makes a full line of DSOs. I don't know if these would be suitable for tube amplifier diagnostics, i.e., overkill, but having experience with their automotive version, it seems they would be a very useful tool. Cheers.
@UncleDoug
6 жыл бұрын
Thanks for the interesting input, JW. I have no familiarity with PicoScope but I'm sure there are sites and videos that do. Best of luck.
@KE8UYV
2 жыл бұрын
Thank you, Uncle Doug! I wish I could be your apprentice. I guess in some ways, I am! Lol
@UncleDoug
2 жыл бұрын
Yes, you are, Shawn. Best of luck with all your projects.
@daleburrell6273
3 жыл бұрын
7:06...I'll have to remember that technique-!
@UncleDoug
3 жыл бұрын
Glad it was helpful, Dale.
@TheOpenAirGarage
6 жыл бұрын
Another great video. Thanks for sharing this with us.
@UncleDoug
6 жыл бұрын
You're welcome, T.
@mrkattm
6 жыл бұрын
Another excellent video, you said nothing wrong but I think there may be some confusion regarding DC and AC signals on the scope and the use of the AC DC coupling switch. When the scope channel is set to AC it is capacitively coupled and blocks any DC on the signal, when the switch is set to DC in passes everything DC and AC and will display the AC signal riding on the DC level. Lastly the Add function is purely a mathematical function used to give the addition of the two channels, if is often use to provide a pseudo differential measurements between 2 points in a circuit as apposed to some point and ground. For example to measure the voltage drop across an resistor that is not tied to ground clip channel one probe to one side of the resistor and the channel 2 probe to the other side of the resistor (do not clip the probe's ground clips to anything, actually it is best to remove them from the probes) then set the scope to add channel one and channel 2 and set invert to invert channel 2
@jkaley
6 жыл бұрын
MK, I'm glad you clarified the AC/DC coupling switch here. It's a major point of confusion for oscilloscope users coming from a multimeter background.
@diegovilanova1
5 жыл бұрын
Great video, thanks for sharing!
@UncleDoug
5 жыл бұрын
You're welcome, Diego.
@iskandertime747
6 жыл бұрын
Jack is a straight up ninja warrior. He could be anywhere!
@UncleDoug
6 жыл бұрын
Right you are, Iskander.......anywhere :)
@colinhepburn2818
6 жыл бұрын
As allways another helpfully vid doug thank you
@UncleDoug
6 жыл бұрын
You're welcome, Colin.
@old64goat
6 жыл бұрын
Great video and information!
@UncleDoug
6 жыл бұрын
Thanks, OG :)
@DaveHilts
6 жыл бұрын
another great one! thanks UD!!
@UncleDoug
6 жыл бұрын
You're welcome, Dave :)
@toms4123
5 жыл бұрын
Thank you so much, great lesson
@UncleDoug
5 жыл бұрын
It was our pleasure, Tom.
@pauldow1648
6 жыл бұрын
☺ 3.2 or 2.2 rms watt. Each amp figure will drive my Klipschorns fine. Beautiful.
@UncleDoug
6 жыл бұрын
Thanks, Paul......they must be very efficient speakers.
@dwightjt
3 жыл бұрын
Cats are shy they like To hide +if that faucet Leeks any he will drink From it. What a beautiful funny black Cat. Thanks for the vid On the oscilloscope. Dwight JT.
@UncleDoug
3 жыл бұрын
More poetry, Dwight.....Thanks :)
@gahlanaventis
6 жыл бұрын
thanks man so much for your time and valuable info really much appreciated
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