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AddOhms
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Добавлен 9 мар 2013
Electronics tutorials, reviews, and projects by James (Bald Engineer).
Four things the MXO5 oscilloscope does faster than any other scope
The Rohde and Schwarz MXO5 is the fastest-performing oscilloscope on the market--even when all 8 channels are active! Bald Engineer checks out the precise trigger, ridiculously fast update rate, and a serial decode feature he missed with his review MXO4 review. Check out what is new with the MXO5, how it compares to the MXO4, and some new features available on
both.
Learn more about the R&S MXO5: bald.ee/mxo5
MXO4 Review: ruclips.net/video/UmFTR4v7M1Y/видео.html
Apple II Clock Glitch: ruclips.net/video/ZWf8t_mHocM/видео.html
Get show notes at: bald.ee/ao-mxo4v5
Patreon: patreon.com/baldengineer
Discord: bald.ee/discord
Instagram: baldengineer
X/Twitter: addohms
Workben...
both.
Learn more about the R&S MXO5: bald.ee/mxo5
MXO4 Review: ruclips.net/video/UmFTR4v7M1Y/видео.html
Apple II Clock Glitch: ruclips.net/video/ZWf8t_mHocM/видео.html
Get show notes at: bald.ee/ao-mxo4v5
Patreon: patreon.com/baldengineer
Discord: bald.ee/discord
Instagram: baldengineer
X/Twitter: addohms
Workben...
Просмотров: 3 429
Видео
Bald Engineer Apology 2024 (April 1)
Просмотров 3,1 тыс.2 месяца назад
This is a very difficult video to upload. I have repeatedly stated a part of my electronics history, but new evidence has come to light to suggest I may have been lying. In this video, I come forward with the truth. I sincerenly hope you can accept my apologies. Patreon: patreon.com/baldengineer Discord: bald.ee/discord Instagram: baldengineer X: X.com/addohms Workbench Wednesdays...
Uncovering the Apple II's Mysterious (and Intentional) Clock Glitch
Просмотров 24 тыс.3 месяца назад
The Apple II's CPU clock has jitter or a glitch. This issue is not new-it has been present since its original design in 1977! Bald Engineer uses an oscilloscope to show how often the glitch occurs and how to correlate that jitter to its source-which is useful when you are not testing 40-year-old devices. The device under test (DUT) in this video is the Mega IIe project. It's a fully compatible ...
8 *Must-Try* features in KiCad 8
Просмотров 45 тыс.4 месяца назад
KiCad 8 just dropped, and here are Bald Engineer's eight must-try features! The February 2024 release brings a whole host of new stuff to the Schematic editor. However, the PCB editor, CLI, and Simulation tools also received attention. (There are something like 900 closed issues for the 8.0.0 Milestone!) Which of these is your favorite? #kicad #schematic #pcb KiCad Links: KiCad 8 Announcement: ...
R&S MXO 4 - Next Gen Scope - Hands-On Review and First Impressions
Просмотров 26 тыс.Год назад
The "world's fastest oscilloscope" title now belongs to the Rohde & Schwarz MXO 4. It can acquire over 4.5 million waveforms per second and process 45,000 FFTs per second. (Though I only got the FFTs to about 30,000 per second...) It features the lowest dead time between triggers of any oscilloscope on the market. R&S gave Bald Engineer an early look at this next-generation oscilloscope. See ho...
Copy/Paste hack for KiCad 6 | KiCad Quick Tips #03
Просмотров 9 тыс.2 года назад
#schematic #kicad #pcb KiCad 6 has a very cool trick for copying and pasting elements. When you copy *anything* it copies to your OS's clipboard as plain text. So, you can paste it into a text editor, modify it, and then paste it BACK into KiCad! How cool is that? Here is two ways to use the text-based copy/paste in KiCad 6 . 00:34 Copy Between Instances 00:56 Individual to Multi-Sheet 01:18 Te...
INSert Labels and wires with one key! | KiCad 6.x Quick Tips #2
Просмотров 15 тыс.2 года назад
INSert Labels and wires with one key! | KiCad 6.x Quick Tips #2
Get from Schematic to PCB Faster | KiCad 6.x Quick Tips
Просмотров 20 тыс.2 года назад
Get from Schematic to PCB Faster | KiCad 6.x Quick Tips
Learn Oscilloscope Basics with an Arduino Uno and RTM3004 | AddOhms #28
Просмотров 197 тыс.5 лет назад
Learn Oscilloscope Basics with an Arduino Uno and RTM3004 | AddOhms #28
Capacitive Touch with TI's CapTIvate Dev Kit | AO #26
Просмотров 18 тыс.5 лет назад
Capacitive Touch with TI's CapTIvate Dev Kit | AO #26
DIY Arduino Turn-On and Debug | AddOhms #27
Просмотров 22 тыс.5 лет назад
DIY Arduino Turn-On and Debug | AddOhms #27
Picking Pull-Up Resistor Values | AO #25
Просмотров 114 тыс.6 лет назад
Picking Pull-Up Resistor Values | AO #25
DIY Arduino PCB Design in KiCad (Pyramiduino)
Просмотров 31 тыс.6 лет назад
DIY Arduino PCB Design in KiCad (Pyramiduino)
DIY Arduino Schematic in KiCad | AddOhms #23
Просмотров 90 тыс.6 лет назад
DIY Arduino Schematic in KiCad | AddOhms #23
Voltage Dividers as Regulators ?! | AO #22
Просмотров 57 тыс.6 лет назад
Voltage Dividers as Regulators ?! | AO #22
Brushless DC Motors (BLDCs) Introduction | AO #21
Просмотров 102 тыс.6 лет назад
Brushless DC Motors (BLDCs) Introduction | AO #21
Fix a Laser Cutter with a Light Saber! | AddOhms Short Film
Просмотров 7 тыс.7 лет назад
Fix a Laser Cutter with a Light Saber! | AddOhms Short Film
Electronics Questions and Answers | AddOhms QA #02
Просмотров 14 тыс.7 лет назад
Electronics Questions and Answers | AddOhms QA #02
Which way does Current Flow | AO #19
Просмотров 124 тыс.8 лет назад
Which way does Current Flow | AO #19
Switching Voltage Regulator (Buck, Boost) Introduction | AO #18
Просмотров 213 тыс.8 лет назад
Switching Voltage Regulator (Buck, Boost) Introduction | AO #18
Linear Voltage Regulators (LM7805) | AO #17
Просмотров 239 тыс.8 лет назад
Linear Voltage Regulators (LM7805) | AO #17
Pull Up Resistor Tutorial | AddOhms #15
Просмотров 300 тыс.8 лет назад
Pull Up Resistor Tutorial | AddOhms #15
An Open Letter to Arduino LLC and Arduino SRL #OneArduino
Просмотров 15 тыс.9 лет назад
An Open Letter to Arduino LLC and Arduino SRL #OneArduino
10,000 Subscribers! (and 2 more AddOhms Announcements)
Просмотров 8 тыс.9 лет назад
10,000 Subscribers! (and 2 more AddOhms Announcements)
How Voltage Dividers Work | AddOhms #13
Просмотров 95 тыс.9 лет назад
How Voltage Dividers Work | AddOhms #13
Unboxing Raspberry Pi B+ | AddOhms #12
Просмотров 23 тыс.9 лет назад
Unboxing Raspberry Pi B | AddOhms #12
MOSFETs and How to Use Them | AddOhms #11
Просмотров 3,7 млн9 лет назад
MOSFETs and How to Use Them | AddOhms #11
Remember to check your shorts... 🩳
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+2
Is one current safer than the other? For example, running a refrigerator in a or Air Conditioner in a shed that is hooked up to a power bank or generator.
No.
Great scope. But I thought this is more of a hobbyist channel. I do not think people who buy these kind of scopes watch this channel. So why bother making this video. Make one of a 12 bit Rigol or Siglent instead.
Topics and intent can change over time. If Rigol, Siglent, or anyone else, offers to send something interesting to show off, I’ll show it. To date, they haven’t.
bellissimo video complimenti, spero ne farai molti altri sull'uso dell'oscilloscopio .
Sounds like a great piece of test equipment for the bench, but it’s sad that you have to still pay extra to get the proper Nixie tube display integrated :D. Thanks for an interesting and useful video.
HIGH! VOLTAGE! Rock n Roll!
keep switching regulators away from analog components
this was a good video. But the key thing, to me, is that you said R&S will release a firmware update to allow 4 FFTS on the MXO4. The MXO4 might be in my job's budget. & Ill poke around a bit & see if this firmware update applies to the MXO3 for example. EDIT: I just assumed the mxo3 exists, it doesnt. I dont see one on their site
words on this video's thumbnail persuade me that this is the most appropriate place to say that there are three grades of thermoelectric elements: pelty, Peltier, The Peltiest. I'm done
I think your rummors are correct about the Zone button. I have heard others that will add the 4xFFT to the MXO4 also, very soon ;)
Oh hell I haven't seen that teardown ! I felt your pain ! This is great 'eye candy' but out of my league....cheers!
The teardown was in an MXO4 full review when that one came out. I did not, however, include the dropping clip in that one.
@@AddOhms Lol ! :)
Some of the high end oscilloscope manufacturers can display the waveform update rate on the screen (usually hidden by default), and some even report blind time as a percentage. Every digital oscilloscope manufacturer has fairly fast update rates in their nominal state (one channel, simple edge trigger, no math or advanced processing). But as soon as you add on a serial pattern trigger that gets executed as an offline trigger/search in software rather than running in hardware in real time with the acquisition system, the update rate drops several orders of magnitude. It would be awesome if the scope could draw the user's attention to this (highlight the lower waveform update rate and higher blind time), and also tell you why the measurement is slow and how to avoid the slowdown. For example, with an interleaved ADC, you may experience a slowdown when measuring channel 1 and 2 simultaneously. But if you move your probe from channel 2 to channel 3, which is connected to a different ADC, the measurement can run at twice the speed, sample rate, bandwidth, or waveform update rate. Oscilloscope manufacturers don't generally publish their high level block diagram architectures in the firmware, context help, user manual, or datasheets, and even if they did, most electrical engineers don't spend enough time with any one scope to demystify implementation details. Having the scope tell you "I can only run 2 hardware-accelerated math channels on channels 1-4; disable the extra math channels or move some of your probes over to channels 5-8 to get another 2 hardware-accelerated math channels. Or "Currently using SPI decode software trigger. Consider using hardware accelerated version of this trigger for faster measurements. <Fix>"
I agree with your concept. I wrote it down as feedback, but I can already see the issue of detecting and making those suggestions. It would be interesting if scopes could show a block diagram and highlight where the bottleneck is. So maybe, it wouldn't directly say: "use channels 1 and 4 for Math2" but you could see that the "math block" is getting processed in software.
@@AddOhmswaveform update rate is an awesome spec, but if an engineer can't figure out how to achieve that update rate in the lab, then it's just a marketing tool to get someone to buy a scope based on specs. And as we've seen, peak waveform update rate isn't a good predictor for misused waveform update rate. If you buy a scope capable of 10M waveforms per second versus 1M waveforms per second, you can't necessarily expect 10x faster waveform rate when you've configured both scopes in a non-ideal manner. That 10M scope may drop down to a slow software accelerated 6k waveforms per second, while the 1M scope may drop down to 100k waveforms per second, having not have had hardware acceleration to begin with, and the manufacturer got around that problem by putting in a faster CPU or wrote faster software algorithms. A fast update rate is useless if you don't know how to configure the scope for it. It's not a small undertaking to detect when there might be a better way to make a similar measurement. The more the software allows non-expert to use the scope optimally, the better. Sure, including a highlighted block diagram showing the current signal path would be a great start to that. I remember the RTP having both a hardware accelerated and software accelerated trigger decode mode, and (at the time) the GUI didn't make it very clear which was which, so even an experienced T&M AE would have a hard time remembering how to configure the faster measurement, let alone the electrical engineer in the lab whose also juggling the software control and quirks of their DUT, their probes, and the rest of their complex test setup. But hey, at least we're talking about how important waveform update rate is. Let's just make sure that the marketing claims gets translated to real world lab results. Now about that SCPI recorder...
Sigh. You’re right. Where is that SCPI recorder at…😉
Very nice conversation here. Thanks for the input. I work with R&S as a Sales Engineer for the Oscilloscopes. My feedback yet is that we have a very fast Scope even with functions like math, meas or even track. Within the MXO you always have access to the information how fast the Scope currently acquires the waveforms (even with calculated blind time) PS: in our RTO and RTP class we indeed also have a Hardware CDR for Triggering which doesn´t slow down so much
Appreciate hearing your feedback and i'm listening ;) some good ideas! I run scope design at another big scope company...
So ... the display of MXO-4 has resisted to the shock?
Yes. There was not even a mark. The display wasn’t shocked, but I was.
@@AddOhms Wow! This is very honorable for R&S. In a lab you can touch the screen of an instrument by mistake with various objects, and is very comfortable to know that some of them can endure such shock.
I mean, it’s just a LCD. Surviving a drop of a few centimeters isn’t the key takeaway about the scope.
What a beautifull scope ! BTW I'm crying at the 27k€ price !
I saw a distributor that had the entry level model listed for only $15k! That’s almost 50% less!
@@AddOhms it's a bargain :-) !
Why is so much of electronics just picking random value components?
Because in engineering there is no best or perfect answer. There are always trade-offs to consider. Some are critical, some are not.
am adicted to this channal.
nice vids
Great informative Video many thanks... just subscribed.. 🥳🥳🥳
FQP30N06L is obsolete? What's a good substitute?
DMT6009LCT
what is the difference between a voltage regulator and a zener diode?
Voltage regulators actively (and accurately) regulate voltage. Zeners are passive, so they drift under various conditions. Watch: Voltage Dividers as Regulators ?! | AO #22 ruclips.net/video/-kEh0TYjYYE/видео.html
Since you mentioned the 78xx and 79xx rectifiers around 2:25:00 I wonder if you know the answer to this... power supplies found in some of the macs have a C78N05 used for regulating -5V output from the supply. But this part isn't well known today. Two supplies I've seen these in are the TDK 699-0153 (looks like Apple PN) and the Astec AA16251 (both are also very similar to the GS supply except -12V is not an output so GS supply can be used in their place). Trying to find a replacement for the regulator but am not sure what would be correct. Is 78N05 a negative input/output like you said is true of the 79series? I believe I probed a working supply (been a while so maybe not) IIRC I found -6V on pin2 and -5 on pin3 and p1 tied to ground. -6.3V seems a tad low for -5 out but whatever. This would also not follow the 78xx/79xx naming convention. Any idea what the N in the middle 78N05 indiecates? I know the trick to have positive regulator output negative voltage by moving ground, but the boards don't appear wired in that way.
No idea. But Google searching it seems to confirm it’s a positive regulator.
Very cool! Been struggling with most of these issues, while trying to design my 2nd PCB/1st 4 layer PCB. 72 year old U of YT student. 🙄 Thanks to the KiCad developers for their efforts to make makers' lives easier. 👍
That this video gets right to the point (except for the moss joke) & has only 62k thins up out of 3.7M view's says a lot about the "average" YT watcher, so lazy they won't hit a like button to save their soul.
Hi there, hello! :-) Just wanted to say I appreciate the edited subtitles!
how does a fan turn in a single direction on a ac current?
induction.
Dreamy. Need to win in lotto today.
Why are you using the symbol for the ATmega168A-AU in your schematic instead of the ATmega328A-AU? Thanks
The pinout is the same. The difference is memory.
I feel personally attacked in that last part. 😡 I was just typing in the comments "when is v9 out" when that part played.... 😥
So far, their major releases usually come in the first calendar quarter of the year.
Why is it bad for the supply to short the ground? Is it because it damages the ground? If this were the case?
It damages the supply and anything between it and ground. Shorts are bad.
@@AddOhms why does this damage the supply?. in my head. current flows from source to ground. why would having no resistor damage the supply?. is ground not just a way to get the current flowing?.. im genuinely perplexed because having strong pressure on a hose doesn't destroy the faucet. so having voltage with no resistor how can it damage the source?.
Current flows in a closed loop. Ground is not a thing, it is a reference point and a return path for electric fields. When a short circuit happens, nearly infinite current flows causing everything to heat up, meaning the smallest resistive device in the circuit is going to burn on. Usually a transistor.
Still the best explainer video of ac and dc to this day.
Fillet line command was already available in KiCad7
Interesting. That's two features now that I missed in 7.
This is really cool. I’ve always used an LcR or VNA to take capacitor measurements. Interested in this talk :)
bald.ee/mlcc2polymer to sign up for the webinar on April 17, 2024.
I knew it! Engineers and bald guys can not be trust!
Almost like there is a reason to wear safety glasses
Hakko solder sucker, expensive but worth it.
Doesn’t do well for surface mount d-paks attached to a ground plane.
Thanks to everyone who played along on April 1st. Although satire, everything in the video is true!
I thought you reminded me of a politician ;-) Keep up the good work
I don't care i just want to see bald engineer
Wait... what else is a lie???? Should I question my long-held beliefs? Are transistors a fad? Did Nicola Tesla really invent the cybertruck?
Totally shattered 😢
The ONE power of 4…🤷🏼♂️
My problem was that I didn’t actually get into electronics until right before we graduated
hahaha.
Maybe the receipt was from 1896 😂