EEVblog
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- Опубликовано: 5 сен 2024
- As the title says, kinda...
Dave answers the age old question, do single take videos really work?
No. No, they don't.
Forum: www.eevblog.com...
SPOILERS:
Tutorial on turning two NPN transistors into a fast bidirectional zener impulse clamp.
A comparison of the low level signal noise on 11 different oscilloscopes.
Teardown of the CH7 analog TV 300W RF Power amplifier.
Debunking of the uBeam ultrasonic wireless power phone charger
I challenge anyone to sit through all 15 minutes of Meredith Perry's talk on being a "technology innovator", go on, I dare you...
• How to be a technology...
Ultrasonic exposure limits:
www.researchga...
Zener Diodes Tutorial: • EEVblog #908 - Zener D...
Paul Reynold's blog (Former vice president of Engineering at uBeam):
liesandstartupp...
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The 2nd EEVblog Channel: / eevblog2
Support the EEVblog through Patreon!
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EEVblog Amazon Store (Dave gets a cut):
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Congratulations on #1000 Dave
Haha, I guess that CEO is saying - I can take a complex problem, google about it, get answers of dubious credibility, misunderstand them all, consider the problem solved and that the experts don't have shit idea...
... And milk $24M off suckers - that's the REALLY sad part :/
No, she is saying-I can take a complex problem, google about it, get answers of dubious credibility, misunderstand them all. Then I can sell the whole shebang to people who manage other people's money and understand even less about the problem than I do, and make millions! _Bloody Ripper!_
@Joseph Baesley: Wow, fuck off dude. You are her male equivalent - An idiot who knows nothing but likes to run their shit-spout of a mouth.
Joseph Beasley Grow the fuck up, gender has nothing to with it. Thankfully your kind is becoming the minority,.
Joseph Beasley No, it's your sexist (and likely racist, amongst other) ideals are no longer being tolerated,. Expect a harsh response if you feel the need to spout such bullshit in the futute.
Congratulations mate. I was about to graduate when you were becoming popular. I really think thanks to your work, nowadays undergrad Engineering students are better educated all around the world
Especially your teardowns and comments on design philosophies about products.. That stuff never taught to me man. And I think my professors spend decades on academic papers but never actually designed a product from top to bottom.. Have no idea about it anyway. That is the gap I see in today’s education system… Most professors are not engineers. That’s why, I want to stress again, your work becomes invaluable.
Yeah.. and good on yuh, great work.... for an Aussie.... (i'm a kiwi). I say one thing though... you've pulled electronics up by it's balls and made it way more accessible (often understandable) for everyone from the hobbyist, the HAM Radio guys 'n gals to the maker and to the designer and that can only be good in my book. Keep it all coming please Dave... (even though you're a bloody Aussie Mate)...
Bloody sheep shaggers! :-P
Dave - I'm currently in the third year of my Electronics Engineering degree program (at 42 no less) and I cannot thank you enough for your videos and the knowledge you impart. It is due to your enthusiasm and "assurance" that I have developed my own PCBs using EagleCad and Seeed Fusion, and learned to approach troubleshooting as a fun problem to solve instead of a sad failure:) Congratulations on your 1000th video! p.s.- your OpAmp video is invaluable - a perfect example of a proper tutorial!
you're the best Dave. thanks for the great videos I've learned so much!
Glad to hear, thanks.
You got me through EEE school a much better engineer than I would have been without your expertise.
Thank you
airmann90 yeah,the learned so much part
I prefer base 2 celebrations. see you in 24 vlogs.
Dylan T you mean (11000) videos
Dylan I don't comprehend your dissatisfaction. This is just the eighth video in the series. That said I too am looking forward to video 100000!
base 12 is where its at !!!
Andrew Joy but who's on first?
Yes duo decimal, octal, hex or binary always worth confusing people with different number systems. Decimal is dull.
Wow, 1000 videos. Incredible. I'm only approaching 1/2 that amount. I hope people appreciate all the work that goes into making these videos.
So Dave, way back when I was on aus.electronics I suggested to you that it wouldn't be a great thing to start
a RUclips channel as you'd probably spend most of your time answering comments.
Given that RUclips is giving some money to great informative people I see that I was wrong.
Cheers to a very successful channel!
You were right, I do spend an inordinate amount of time answering comments!
Then just stop it and go back to the soldering iron ? :-)
Damn I should do that too, these parts aren't going to assemble themselves :-D
Congrats dude !
proud to see our little gift (Tesla/Edison T-Shirt) again in this 1000th edition of his great video blog.
Keep up the good work.
A big "Salut" from our engineering department :-)
It's a cool shirt, thanks!
Dave, you owe me a new monitor. Mine now has several dents in it after being forced to watch that short clip of the uBeam CEO.
Watch the whole 15min and you won't have a PC left to comment because you'll throw it out the window :->
I can't wait for the round number episode - #1024.
You have the feast of the 1000th broadcast, we in Northern Europe have the Midsummer feast. Best greetings from Germany, keep doing so Dave!
Thanks for all these videos over years. Amount of practical I stuff I learned here is probably comparable to my entire engineering university education. Here is to a 1000 more... :D
Thank you for my 1000 favourite videos in the internet dave, I'm 14 and I had an interest in coding and software. Then, many years ago I stumbled upon your videos, somewhere around the EEV blog 300 mark. Anyway since then you have inspired my inner electrical engineer and I have been avidly learning and enjoying the hobby. Thank you so much for everything -Tom
That speech... It hurts. Physically.
That's OK. We'll continue to smile at her and give HER the middle finger.
...and where is the technology today. She is still googling for new ideas to make it work. :)
.... smarter than all of them >combined< :D
It's all the ultrasound hitting you.
Smarter than the average bear. Was that Yogi?
Congratulations on 1000 EEVBlogs Dave!
It's incredible for us to watch you "learn" about your new trade of being a RUclips entertainer. From your humble beginnings to huge satisfying one take videos, glad I am along the journey!
Wow. A whole kiloblog.
Even if uBeam did work as perfectly as described I don't want my ears anywhere near double-digit watts of ultrasound
Yeah. Isn't 125 dB SPL or thereabouts enough to cause permanent damage? The power transmitter outputs 100 to 1000 times that pressure, so I doubt that ultrasonic instead of sonic is going to save your ears. Not because I know much about this, but because 100 to a 1000 times more pressure variation is a LOT.
Trolling has really gone downhill lately. Too obvious.
Not all are like that though, I can only dream of getting as good as Jeri Ellsworth
Hey Dave! So glad your channel reached this epic milestone! Thanks to your videos people around the world become more skilled engineer every day with each release.
Never go to bed without the dayly portion of EEVBLOG ;)
Looking forward to the #2000 video!
Cheers!
Your videos are way above my head most of the time but I do love the mailbag and the tear downs. I'm pretty sure it was a Solar video that caught my eye and Iv been around ever sense. Oh and lets not forget the special videos with Sagan in them. Its always a treat when he is on. With a dad like you he will for sure go far in life. Thanks for all you do Dave.
Dave, congratulations. You deserve to be where you are, top of the RUclips technical broadcasters table. I always thought your expertise and delightful delivery would make you a success. Very pleased to have been a tiny contributor here in the comment section. Best of luck and I hope to be here for no. 2000.
For one reason and another, I haven't really messed with electronics or seen this blog in almost 2 years, but I gotta say. I really love this show and it really makes me want to get the parts bins and scope out and work on some old projects. You are seriously an awesome dude. Thanks for helping to keep the nerds motivated and sharing as much of your knowledge as you can squeeze into 30 minute pieces. Good stuff, Dave.
Hard to believe...and I can remember you building the garage workbench so your car could fit underneath of it! Here's to 1K more!
This has to be the mother of all EEVBlog episodes. Good job, Mr. Jones!
Congrats on the 1000!
I'm sure not many channels have had the distinction to reach 1000 episodes.
Cheers from India!
Congratulations on 1000 Dave, you inspired me to get back into electronics!
Dave, your videos have been inspirational in deepening my interest in electronics, in the same way that Forrest Mims inspired me thirty years ago. Congrats on #1000, and I hope you keep on for 1000 more and beyond. You're a worldwide phenomenon!
Thanks for all the fantastic videos Dave! I stumbled upon your channel when I started my electrical engineering degree, and I'm graduating next semester. Probably learned more about circuit design, tips and tricks with instruments, and PCB design from you than any of my classes.
EEVblog #1000 you made it. Congratulations. I've enjoyed watching since 300!
one day we will all be watching EEVblog while our phones are being charged by ultrasound while the normal underground wires need to be replaced because our chargers are too inefficient.
Dave, awesome vid and congratulations on the milestone. I wouldn't have started working on electronics again if your videos hadn't gotten me interested.
Great to hear!
Congrats on 1000th video! I still remember seeing your first video and starting to consider buying ds1052e:)
it isn't eevblog without a rant in it
The enthusiasm is off the charts on this one. Great job Dave! Let's go for another 1000. :)
Single take must be very hard, and the video would have been as good if each segment had been done separately, but I think the format is excellent for the viewer. Without being too rude, it helps keep you brief. Not suitable for all topics obviously, where you need multiple shots and microscopes etc, but pretty good for many of them.
Congrats on reaching 1000. Your videos has been an invaluable source of information over the last few years. Thanks.
22:03 VEVY bad
:/ It's more than bad.
LOL... and it is underlined no less! Oh boy that's funny.
Congratulations Dave on episode #1000 WTG! Thank you for all your great work.
great potpourri of all the things I like in EEVBlog - thanks & congratulations on #1000, Dave
Congrats on #1000! I'm already looking forward to #2000 :)
This is my first comment on your EEVBlog channel (also on your 1000's video) since i start to watch your videos four years ago. Glad to know these channel. I've learn so much from your videos dave. Good work. Thank you very much, dave.
Thanks!
The One Kilovids Trophy!!1! ^^)
Congratulations, Dave! You inspired many people to share their knowledge with the segments you came up with. Your blog has many firsts and added a lot to the DIYer's world out there. It's inspiring, informing entertainment.
…after making this one, you probably felt like a kid after being in a candy store for too long, right? Slightly exhausted from overexcitement and palpitating but happy?
I still think the Li-Fi (Wi-Fi using light) is the fail of the century.
Thanks for entertaining and educating us with a 1000+ videos, Dave. Keep em coming!
Congratulations Dave and those who have been a part of your journey like David.
You're living a dream - doing what you love, on your own terms and making money on it! Thank you for these 6 years and for great job you do.Can't wait to see 2000 special.
Congratulations on your 1000th Dave, you were the first RUclips channel I subscribed to. Looking forward to the next 1000.
Been using Qi for YEARS now. It's amazing. Will never go back.
Very great quickie of each of my favorite segments. Especially the noise comparison of each oscilloscope, very great! Good Practice was also to include the dumpster founds from the past to the tests ;)
Congratulations on 1k Dave!
Good preparation for the actual milestone, coming after 24 more vids. :)
Happy milennium Dave! ;)
happy 1000! thanks for the years of content
I've predicted that sooner or later most public places will have Qi-type chargers built into every day surfaces (tables, arm rests, etc). seems like that would be the best option maybe?
I am in no way related to the electronics engineering industry or hobby. But I started watching your videos, first from a teardown video, but now a variety of other things, including your soldering tutorials. I just assembled my first electronics kit ever because of it. Hopefully this will become a good hobby of mine.
Congratulations Dave, 1000 videos is a dang lot! I started watching from #1 when I was in uni, I still enjoy all of your content today. On ya mate!
I wish this video was 10 Hours long ... i just cant get enough of everything!
Dave, congrats on 1000 EEVBlog videos, keep it up, it's educational as well as entertaining...
Congrats on 1000! I can't even remember when I started watching any more. Here's to 1000 more.
That was truly awesome Dave. Here's to another thousand videos!
As an electrical engineering student your videos have been a welcome distraction from study or just student life in general.
So thanks Dave and heres to the next 1000 videos which I will most definitely be watching!
The scopes usually construct sine wave, when you click SINGLE SHOOT, it uses the data from all SINGLE SHOOTs with the same vertical/horizontal scaling, so if you would click SINGLE SHOT more times the sine wave should be less noisy as the wave is constructed.
Now different scopes do different construction so you cannot know for sure, how they are implementing the wave construction.
I do not know how you would measure the noise level of AD, but I know some words you can lookup:
ENOB, SINAD, SNR
At our university we have made a program for measuring Arduino's ADC ENOB, but we have not learned a lot, because we only rewrote the equations as it was too advanced for our level.
Congratulations On Your 1000th Episode. You Have Welcomed Us into your Lab, and have shared personal stories with All Of Us, and That We Thank You! Here's to Another 1000 Videos to Come. Cheers!
Gratz on the #1000. Thank you so much for all your work. I have learned a lot from you.
YOur time machine display is set for First Contact Day! Love how you put Back to the Future with Star Trek!
Simply brilliant, Dave! Congratulations on #1000!
Absolutely fantastic take. Thank you for putting so much effort and passion into EEVblog. It is one of the best online electronic resources and a neat peek into Australia! Love the transistor clamping circuit at the beginning too, using basic properties of a transistor to do something out of the ordinary.
That two npn clamp circuit is a nice one. I've got it to work in LTSpice as well. I've also used the 2n2222. The emitter-base voltage is defined in the BVbe parameter of the transistor model. So I had to set this manually. Actually you need to test for values between 6 and 10V. Because you never know what you gonna get.
"clamp clamp" reminds me of Clamps from Futurama (robot mafia)
Gee, you think? You think that maybe I should use these clamps that I use every single day at every opportunity? You're a freaking genius, you idiot!
Thank you so much for the videos now in the thousands of entertainment and education.
I hope you are proud of this milestone because you pretty much damn deserve a good pat on the back and feel good inside.
Fairly sure nobody is ever gonna read this comment, so why should I pay the effort of moving my fingers accross the keyboard? It's simply because I owe you so many thanks, Dave. Hours and hours of wonderful entertainment and education. #1,000 was another joyful time to watch. Thanks, thanks, thanks and 997 more thanks. That being said, I have no doubt you're gonna take the blog to its next level soon. *eyebrowes* Will love to be among your audience.
Too late at night to make sense of this! Will check back in the morning ;) Congrats on 'official' eevblog #1000
The 'Vebo zener' is the reason many experimenters complain that the classic multivibrator doesn't work properly.
If its supply is more than 6v (and it usually is) then the e-b zener effect will short-circuit discharge each capacitor down to 5v or so as the opposite transistor turns on, after which it will discharge more slowly via the base resistor.
Consequences are unstable operating frequency, or when large timing caps are used, intermittent blowing of transistors since on each half-cycle one transistor of the pair gets whacked with a s/c current rammed backwards up its base. (If you'll excuse my attempt at Ozzie terminology)
The solution is to either use a lower supply voltage, or else to add base protection diodes.
Congratulations David, your channels is one of my favorites. Keep the videos coming!
Awesome Video, Dave! Can we have such a nice video featuring each segment every month? Preferrably of things that are not too interesting by itself? That'd be great! Really enjoyed it!
congrats on 1000, dave, ive been watching since 2011. looking forward to the next 1000
Well done Dave! Really pleased for you mate. Been subscribed since I stumbled on EEVblog #32 6 years ago, and it's been a blast!
Congrats and thanks for 1000eps! Can't wait to see what I learn in the second thousand!
@EEVblog Dave in regards to the noise on the keysight scopes, just press the magnifying glass soft button, itll use infinizoom and it does wonders for removing noise and making it easier to read
Congrats on the 1000. The TV transmitter tour and teardown videos are great. If anyone even dabbles in RF they should definitely spend the time to watch the tour video. It's an awesome display of power. I know the teardowns are a ton of work (and we appreciate them a lot), but would you consider powering on the NEC TR PA?
you're the best Dave! my favourite is mailbag and teardown Tuesday with scope tinkering mixed in!
Great job Dave! Congratulations with your 1000's episode!
Happy 1000 Mr.Dave. Keep 'em Comin'
This is amazing. I think you found a format for a standard TV show here!!
That transistor/diode clamp circuit - I'm pretty sure I've also seem them used in audio circuits as distortion and/or compression. I'd have to trawl through the collection of stomp box circuits to be positive, but I'm fairly certain .Congrats on 1000 episodes!
Would be interesting to see a reference for that. I've seen transistor BE junctions used as diodes in such circuit, but not avalanche
Just had a bit of scan through some old circuits and couldn't find anything this extreme (doesn't mean it hasn't)! I did find some some back to back transistor/fet configs for distortion and octave circuits and back to back feeding +/- signals into the bases. Might have a play around with it on an opamp feedback circuits and output and hear how it sounds!. A lot of audio circuits use transistors as diodes for clipping signals.
Really good video Dave, congrats on making 1000. That's a lot of work, a lot of commitment. can't believe you didn't choose the Batterizer as the debunk of the century though...I figured you muttered Batterizer in your sleep lol
Congratulations mate! Wanna go for another thousand?
Btw, I believe keithley used transistor clamping in their 236 Source measure unit. (and the 237)
Thank you for 1000th video! Loved every single bit of it!
Dave mate, well done on 1000 videos. Your videos have been incredibly helpful to me and have taught me a hell of a lot. The EEVBlog Forum is one hell of an achievement too - bringing people together to help each other learn.
Keep it up man, you're a top bloke.
All those scopes turned on immediately reminded me of doc Brown's clocks!!!
Congrats on 1000 awesome vids! I really enjoy your approach to engineering, and I learn a lot from it, being a freshly baked EE :) Keep it up, greetings from Germany!
Dave, you're going to have to pick up the pace to make it to the next significant milestone, 10,000 by April 5, 2063! ;-)
@EEVblog: Congrats, Dave to video #1000. Looking forward to what's coming up next.
Interesting clamp thanks Dave!
There's another clamp that I saw on the forum that I'm using in some production designs now, uses a shunt voltage reference to set the base voltage of a PNP, then if the emitter voltage goes 0.6V about the ref the transistor starts conducting to GND - quickly! ;)
Congratulations on #1000 video Dave
Keep making them, i love it.
Congrats on 1000 videos!
Awesome. I love this channel, and I'm looking forward to #2000!
Well done Dave from Pom-land. Your videos lighten my day and challenge my thinking.
60 khz sound wave based charging? I see they're keen to piss off every cat, dog and other animal capable of hearing into the ultrasonic range no end...
Just imagine what that's like - a really loud high-pitched whine... That's bound to drive anything that can hear it completely nuts...
And for all that, my phone can wirelessly charge at 1.5 watts. Yay!
Congrads on 1000th EEVblog mate.