Тёмный

EEVblog  

EEVblog
Подписаться 943 тыс.
Просмотров 216 тыс.
50% 1

Dave gives his initial impression on the Rigol DP832 triple output 195W lab power supply.
Forum: www.eevblog.com/forum/blog/eev...
EEVblog Main Web Site:
www.eevblog.com
EEVblog Amazon Store:
astore.amazon.com/eevblogstore-20
Donations:
www.eevblog.com/donations/
Projects:
www.eevblog.com/projects/
Electronics Info Wiki:
www.eevblog.com/wiki/

Наука

Опубликовано:

 

5 авг 2024

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 320   
@Arek_R.
@Arek_R. 3 года назад
RIGOL official suppliers: link Dave's review. Dave: "Look at that wanky keypad" Haha
@deniskobozev3916
@deniskobozev3916 7 лет назад
Thanks for showing the features of this PSU, Dave, very helpful.
@flanlemonjello
@flanlemonjello 11 лет назад
Pretty darn thorough for a first impression! Much appreciated.
@pwneytube
@pwneytube 8 лет назад
I can't stand products that are crippled by software and you have to pay for an unlock code. I fully understand the reasons and if I were in charge of making those decisions I'm sure my hand would be forced by the market as well, but I still hate that shit.
@adamkaiser1389
@adamkaiser1389 3 года назад
You can still use it as in the old days, never di software upgrades. For example in this case, when you're ready for more accuracy, sell your DP832 to someone and purchase the DP832A which has the higher accuracy. Why does it bother you if others choose to upgrade their existing supply via incremental upgrade cost instead of going through the hassle of selling current model and buying a better one? Would it make you feel better if the upgrade was 3x the price and required you to send in the unit, then someone at the factory applies the update and puts a different sticker on it?
@david6054
@david6054 3 года назад
It does make sense in some ways for the manufacturer. They only need to produce one type of device for this range and specify the option tiers by software. It might cost more on a per unit basis with the aditional hardware but only a few bucks, but it cuts down on costs not to have 5 production lines when you can do this. That being said, I do not like it when companies ask such extreme prices for this. Like I said, the hardware options add a few bucks to the cost but then they charge you >90 dollar to change a "enabled=false" to "enabled=true"... All the code is already in there. It is not like you are paying for a new OS or something... But hey, maybe there is a opensource firmware out there for these with all options + more unlocked
@david6054
@david6054 3 года назад
It does make sense in some ways for the manufacturer. They only need to produce one type of device for this range and specify the option tiers by software. It might cost more on a per unit basis with the aditional hardware but only a few bucks, but it cuts down on costs not to have 5 production lines when you can do this. That being said, I do not like it when companies ask such extreme prices for this. Like I said, the hardware options add a few bucks to the cost but then they charge you >90 dollar to change a "enabled=false" to "enabled=true"... All the code is already in there. It is not like you are paying for a new OS or something... But hey, maybe there is a opensource firmware out there for these with all options + more unlocked
@shyleshsrinivasan5092
@shyleshsrinivasan5092 3 года назад
Aye !
@ItsBoyRed
@ItsBoyRed 3 года назад
@@adamkaiser1389 im pretty sure its the same hardware, you can just hack it to the A version!
@DantalionNl
@DantalionNl 11 лет назад
Dave your honesty is awesome! and I couldn't care less if someone gave you the product or you bought it on your own, I know your opinion is straight up honest keep it up!
@Sparkette
@Sparkette 6 лет назад
You know it turns out this product is exactly the same hardware as their fancier DP832A power supply, which is like twice the price. It looks like they were trying to pass this one off as having a monochrome screen with just a backlight that you can change the color of, to disguise that and make it look like a much lesser model. But they slipped up in at least a couple places. Like the UI where you can select the color scheme shows all the available colors at once to select from, and the "custom GUI" option also has multiple colors displayed at once.
@chris746568462
@chris746568462 11 лет назад
Been looking at one of these for a little while, this video made me buy one today!
@gregagnew9777
@gregagnew9777 8 лет назад
Thanks for the review Dave, just purchased this power supply.
@UndercastEsmeganitrospeed
@UndercastEsmeganitrospeed 7 лет назад
Is it good? Hackable? Can you increase the output over fabric settings?
@gregagnew9777
@gregagnew9777 7 лет назад
MegaNitrospeed So far it's been a great addition to my arsenal. I haven't really messed with hacking or increasing output as it does exactly what I need out of the box.
@UndercastEsmeganitrospeed
@UndercastEsmeganitrospeed 7 лет назад
Greg Agnew So its worth the 400-500€?
@gregagnew9777
@gregagnew9777 7 лет назад
MegaNitrospeed Listen, if you need an accurate ps with these features, yes.
@CurvedSlightly
@CurvedSlightly 7 лет назад
You bang on about how crap everything about it is, then at the end you say GO BUY IT NOW IT's AMAZING! All the videos you've done say it's shit, it breaks it's not accurate, it over heats, you think the buttons are 'wanky'. Is that just typical Aussie impression? Try and slate it but it's actually pretty good.
@zero3609
@zero3609 11 лет назад
thank you for this video cant wait for the review video
@BAMFWrangler
@BAMFWrangler 10 лет назад
Thanks for the video Dave. You're the reason I'm buying it. I was stuck looking at $1000 tektronics and Agilent single output supplies. I just got my first job after graduating as an BS biomedical/EE and I'm looking to upgrade my home lab a bit lol.
@1959Berre
@1959Berre 6 лет назад
I agree on using a scope standing vertically on the floor. Way less magnetic influences from surrounding gear on the bench. I noticed even a magnetic screwdriver lying around on a bench can influence the trace.
@salat
@salat 11 лет назад
Still smiling about 0:15 - Dave's 'first impression videos' are better than many other 'real reviews' - as always a big thumb's up & thanks for the video..
@DAHBLIFE
@DAHBLIFE 11 лет назад
Great power supply review Dave :)
@Ultrarc
@Ultrarc 8 лет назад
first impressions, video is 43 mins long
@muzzaball
@muzzaball 4 года назад
I am not going to say that Dave waffles on - because at least he is passionate about what he does. Good job Dave! One thing tho, and I am not an electronics tech, you compare a Rigol with Agilent, and Agilent DMM - how do you know which one of your precision instruments is most correct??
@SaeligCoInc
@SaeligCoInc 7 лет назад
Helpful review!
@linmajon
@linmajon 11 лет назад
Great video. Thanks dave! i'm currently looking for a multi output DC PS. This could be the one, but it seems to be a lot more featured than my needs. However, a great preliminary review.
@EEVblog
@EEVblog 11 лет назад
No preference, the Rigol simply lives on the teardown bench where I shoot most of my stuff, so it's just more handy to use it. The Agilent lives on my "working" bench up on the rack.
@RandyLott
@RandyLott 11 лет назад
The persistence is incredible. It looks just like an analog scope.
@richardcorfield9926
@richardcorfield9926 6 лет назад
Presumably you can use the Over-X protection when running in constant Y, so if in constant voltage you can say "Shut this down if I hit 1A" and if you're in constant current you can say "Shut this down if I'm putting more than 10V across this to try to achieve the current".
@caelitis
@caelitis 11 лет назад
I have to admit, I *love* the looks of this. I am going to buy it.
@Rich_123
@Rich_123 11 лет назад
You can see when he is choosing the color theme, it displays multiple colors at once.
@BAMFWrangler
@BAMFWrangler 10 лет назад
It would be nice to test out the remote control over LAN or rs233. Maybe later u can do a video on the language and give an example of how to remote control? Not using NI software but by terminal? I would find that very useful. Thanks again
@DarkInsanePyro
@DarkInsanePyro 11 лет назад
Dave you're killing me! Another wish list item!
@quantomic1106
@quantomic1106 11 лет назад
You got ripped off, Dave! You should've got the Hello Kitty version, they are a much better deal and they will look really cute on you workbench! : )
@davidgaleski5303
@davidgaleski5303 7 лет назад
thank you
@freon500
@freon500 11 лет назад
Sorry if we sometimes might think you are getting paid for your reviews, we are so used to hype that that we often think that when we see something on main stream media pertaining to products/services we often think that there is some sort of a catch. Anyway, the reasons we watch your videos are many because you have so much to offer and we are lucky to have you.
@gamccoy
@gamccoy 11 лет назад
Good Video, Dave. This looks like a supply I would buy with my own money. My only gripe is the depth of the case. That's pretty deep for me.
@greygoosemafia
@greygoosemafia 11 лет назад
dave you are awesome.
@asteen75
@asteen75 11 лет назад
I don't mind the button for the various display modes. - As you say yourself Dave, the small digits are hard to read from a distance. The round meters are readable more than 5 meters away.
@runforitman
@runforitman Год назад
19:29 that is stupid useful especially when I'm testing within a voltage range I usually have to be extremely careful not to turn it up too high which can be easy to do as my psu has velocity control
@Hyxtryx
@Hyxtryx 10 лет назад
You probably already figured it out, but the reason you're seeing 0.001A when nothing is connected, is because you need to manually calibrate the thing. The same thing happened to yours that happened to mine. As soon as you ran it through some paces, the calibration went off. You already had CH2 showing .001 when you unboxed it, and CH1 started doing that after you hooked up the big load! I have a 5 digit meter that's just barely adequate for calibrating this, but I managed to get CH1 of mine to within +/- .002 volts throughout the range; at many points it is dead-on. I had to run through the calibration a dozen or more times before I was satisfied. If you have an expensive bench meter (I used a $250 Chinese handheld DMM), you can probably get it right on the first try. I love this power supply. It's gadget heaven, and a great power supply to boot! I have a 100W 1 ohm resistor I could try the 30V 3A test on, but I'm afraid to go that high. :) Looks like yours wasn't keeping up. ...or maybe you had a limit set elsewhere on the device?
@brandonl1661
@brandonl1661 6 лет назад
I just bought a DP711 and my volts are of 18-24 mV. I was told it can't be calibrated and it's with in error. Yet I paid $60 to get the 3rd decimal and from the sound of things the 2nd and 3rd are not accurate. Do you know something they don't? How do you calibrate it?
@wangus
@wangus 11 лет назад
I looked on their site, and a 832 with all the extras is about $90 or so more than the 832A. So they're definitely aiming for the 832 to be an 832A where you choose to leave out a few of the options for a lower price. It seems like the hardware is basically equivalent.
@EEVblog
@EEVblog 11 лет назад
I do NOT get paid for reviews. Yes, Agilent gave me that 34461A to use in the lab. No, that did not influence my review. I have clearly demonstrated this time and time again. If you can't see and understand that from all of my video history, then I don't know why you bother watching. My reputation has been built on telling it like it is. Remember the 3000X scope which I didn't pay for either. Remember how I showed it BLOWING UP on their big launch day? My how people have selective memories...
@snipersquad100
@snipersquad100 11 лет назад
I love the Rigol power supply's, wish I had one.
@EEVblog
@EEVblog 11 лет назад
That's the way I looked at it. I never would have paid $700+ for the 832A, but was happy to pay the $400+option for the 832. YMMV.
@EEVblog
@EEVblog 11 лет назад
Yes, good point. A guard on the rocker would be nice.
@chris746568462
@chris746568462 11 лет назад
Just got mine today. Very nice supply. Found a small niggle. Turn any output on and enter storage menu, then turn the output off and it says its off but remains on. Resets on exit of storage menu.
@DanTheAppleMan
@DanTheAppleMan 11 лет назад
Looks like the rubber bumpers on the front don't extend past the binding posts, that's not great for the portability aspect. I treat my kit with care but sometimes a little extra insurance is needed.
@CalcProgrammer1
@CalcProgrammer1 11 лет назад
Definitely a color LCD, you can see it showing multiple colors at the same time on the display screen. You can do a monochrome with rgb backlight but that wouldn't be able to show multiple colors at once. Why they didn't actually use the color LCD for the GUI doesn't make any sense, at least make the Rigol logo yellow like their other products!
@ronaldlijs
@ronaldlijs 10 лет назад
Hi Dave, I liek the dial option mate!!! You didn't even give it a try! :-)
@sagaertj
@sagaertj 10 лет назад
Dave , how does it react to connecting accu's ? what if your accu is 12V and you set the powersupply to 10V and 1Amp current limit .Does it discharge the battery till 10V ? Or is it only sourcing current ? (My R&S NGMO2 does sink/source.)
@Sinusoidal
@Sinusoidal 11 лет назад
Good stuff. Looks like a great power supply for the money, although I share your disgust for the rotary knob and the surrounding numeric keypad.
@thecombatengineer7069
@thecombatengineer7069 6 лет назад
I still cant get over spending the cash for the extra resolution and then seeing its out by $90.
@brandonl1661
@brandonl1661 6 лет назад
The Combat Engineer just bought the DP711 and paid for the HIRES all to be told 18-24mV is with in error and I have no way to calibrate it. I will be getting a refund.
@andrewmcneil
@andrewmcneil 11 лет назад
please do a tear down Dave. i am sure a lot of people would be interested to know what makes this tick.
@arcadeuk
@arcadeuk 11 лет назад
I have to say the UI looks to be very good on this psu
@scottson2
@scottson2 Месяц назад
I will have to check if it does that when powered on from the back vs the front switch... The front switch was something that could be disabled...
@felenov
@felenov 6 лет назад
I have a KEYSIGT power analyzer. 4 channels, very expensive. Modular, all upgrades are hardware. Then I have a ATTEN TPR3020S, which is hell of a powerful unit. Then there is my Hewlett Packard 24V 50A beast. I use the Keysight unit and I am used to it, can use it without really looking at it.
@John_Ridley
@John_Ridley 11 лет назад
The alternative is to enable everything and charge more for the unit to pay for all the R&D for the extra features. The truth is that the hardware doesn't really cost much so it saves money (for everyone) to just put it in to start with then let the people who WANT the extra features pay for the R&D. I just bought a Rigol DS2202 for $820. If they only shipped the model with everything on, I would have gotten a bunch of features I don't need (200 MHz, etc) and paid $1500.
@Rasle500
@Rasle500 9 лет назад
@VintageMayo Oooh that is expensive... So please let me know what super cheap alternative you bought in stead. Thanks in advance..
@Razor2048
@Razor2048 11 лет назад
For the 1.5v issue, can you find a really cheap digital watch or something and connect it to the watch to see if it will fry the device or damage it?
@Stabby666
@Stabby666 11 лет назад
I think it's a great idea. The only other option is for them to spend more money making physically different units, which would increase the cost of all of the variations, and also means you would need to pay for a whole new unit if you found you needed extra features. If there's extra stuff in the box that's not active because you haven't paid for it, what's the problem? No different to having a satelite receiver with channels disabled until you pay the premium rates etc.
@SylwerDragon
@SylwerDragon 11 лет назад
Nice video Dave. I would like to see what is inside and your point of view on that. If i will buy one i want to be sure it is good one. Please make some video about it.
@devicemodder
@devicemodder 11 лет назад
I really enjoy your video's and learned a lot. Any chance of a teardown?
@happycline
@happycline 11 лет назад
interesting my PC power supply is working fine for me for now, but this does look tempting, especially since I'm getting into more sensitive boards.
@pertileluca
@pertileluca 11 лет назад
Please Dave take it apart, we want to see this supply inside!
@tablatronix
@tablatronix 6 лет назад
have they updated this, i just bought one, did not realize this model was this old
@BenBilesBB-box
@BenBilesBB-box 9 лет назад
accurate to within one least significant digit !! love it :) thanks so much for these reviews !!
@DavidLeeMenefee
@DavidLeeMenefee 11 лет назад
I would definitely like to see you control the DP832 power supply using your computer.
@DatBlueHusky
@DatBlueHusky 11 лет назад
insane power supply
@caelitis
@caelitis 11 лет назад
No, check out the "Theme" options in the "Display" menu. Different colors on the screen -> Not a monochrome matrix.
@artekomx
@artekomx 11 лет назад
Dave, do an in-depth review please! To see if I should buy this PSU! Thanks!
@4BoltClevo
@4BoltClevo 11 лет назад
Dave, i used to have a power supply that wouldn't current limit for a small delay after turn on. I smoked a few things before I chucked to the shit tin. Can you whack an LED on an output current limited to say 20mA and then switch off and back on? If it passes that test I'll go buy one.
@computersales
@computersales 11 лет назад
I watched this at 4x speed. It was a good video. :P
@krawutzimon
@krawutzimon 11 лет назад
Looks quite good.. somehow i like the monochrome displays a lot more on psus. but that power on transient really needs to have a second look by rigol.
@DarkAxi0m
@DarkAxi0m 11 лет назад
That display mode key would be good if it toggled between the 3 display types
@wangus
@wangus 11 лет назад
That was my first thought. But what about another possibility: perhaps it's not like paying for extra features, but actually like a discount for people who don't need the full functionality.
@Elecifun
@Elecifun 8 лет назад
I have had mine for few months now. Its awesome a I haven't managed to kill it..Yet. I have killed three other PSU's in less than 1 year. This is great and works really well handling all sorts of circuits I make it power. I love the rotary control as this make thumb spinning real easy. Got all the upgrades. No Cloud though. Only 2 complaints, 25 watts of power while its quiescent. If you lock the keypad you have to network into it to unlock it.
@eetechs1643
@eetechs1643 8 лет назад
+Elecifun Dont short a DC motor when you test them to this power supply!! It blows a fuse and mosfet in them. But an Keysight one does not have this problem.
@Elecifun
@Elecifun 8 лет назад
EETechs Thanks for the input. I have given mine quite a bit of grief so far and it is still good. I do not quite understand your test situation regarding blowing mosfets, do you mean blow the mosfets inside my DP832?
@eetechs1643
@eetechs1643 8 лет назад
Elecifun Yes. You will blow a mosfet and fuse inside the unit if you short a DC motor that it runs.
@Elecifun
@Elecifun 8 лет назад
EETechs Does it not matter the size of the motor? lol it doesn't make sense. Short a DC motor and lol it blows a mosfet and fuse. OK cheers I will have whatever you are drinking ;-)
@dibraniuk
@dibraniuk 6 лет назад
dave you catched the advert bug!!
@pentachronic
@pentachronic 6 лет назад
Just a comment about overcurrent and overvoltage protection. A lot of PSUs switch off when they hit overcurrent conditions. This causes the power rail to oscillate and will damage your load if it has inductances in it. I would like t9 see how this PSU works under those conditions.
@liammk96
@liammk96 11 лет назад
You should do a video on Lab Power Supplies for beginners. I would love to get a bench PSU, but all these expensive ones are a bit out of the range of beginners like me.
@EEVblog
@EEVblog 11 лет назад
I mentioned in this video that I bought this unit. Not that it makes any difference at all to how I review things or what I say. I NEVER get paid to review products.
@Ribsnikker
@Ribsnikker 11 лет назад
A 1998 PSU from a Pentium S PC makes a great lab power supply - +12, -12, +5, -5, +3.3, overcurrent protection, ground... And it was free too!
@lehoanghiep9936
@lehoanghiep9936 7 лет назад
Is the output channel isolated from each other ?
@MatrixOfDynamism
@MatrixOfDynamism 9 лет назад
Does this thing still have the turn on voltage spike on it?
@dealio82
@dealio82 11 лет назад
Agreed with you mate :)
@Fake0Name
@Fake0Name 11 лет назад
It clearly displays multiple colours *SIMULTANEOUSLY*. Look at the segment when he's in the colour-scheme picker. It has a red box, a blue box, a green box, and a white box AT THE SAME TIME.
@g1fsh
@g1fsh 11 лет назад
Im not that keen on the look of the unit but I recon with a few little software tweaks and a deeper control nob its going to be tuff to beat
@Narwaro
@Narwaro 7 лет назад
I wonder if they really use a monochrome display. I doubt it. I think they actually use the same hardware for all models with 3 channels.
@istvan8905
@istvan8905 6 лет назад
they don't. Take a look at 23:20
@DavidLindes
@DavidLindes 2 года назад
@@istvan8905 old comment, but... I think Narwaro is right. At 23:20 you can see multiple colors on the display at once, even -- the color select section.
@christopherjones7698
@christopherjones7698 11 лет назад
For the record, I like first impression videos.
@TheLameTechGuy
@TheLameTechGuy 11 лет назад
You should make a video on how to modify an atx psu to make it variable voltage. Like higher than 12v
@Afrotechmods
@Afrotechmods 11 лет назад
Hah I was just wondering about this unit a couple of hours ago!
@lancewestin7885
@lancewestin7885 3 года назад
A tip: you can watch movies on Flixzone. Me and my gf have been using it for watching all kinds of movies during the lockdown.
@axtonheath8170
@axtonheath8170 3 года назад
@Lance Westin Yea, I've been watching on flixzone} for since december myself :D
@noahjagger1112
@noahjagger1112 3 года назад
@Lance Westin definitely, have been using Flixzone} for years myself :)
@programorbeprogrammed1366
@programorbeprogrammed1366 11 лет назад
I was unfamiliar with this obscure piece of software you reference. So i looked it up. It appears to be software made specifically for windows users, so it makes sense they would use such a naming scheme. The oddity being its use in a embedded system. I do agree agree that the DOS drive notation is familiar to windows users, if not a little ridiculous, why not A:? or even better /
@ShilpaGireesh
@ShilpaGireesh 11 месяцев назад
What's the procedure for configuring the voltage levels on this supply? I've noticed that whenever I power it on, it resets to 0
@rubusroo68
@rubusroo68 11 лет назад
Which video did you watch mate? The one I just saw he seem reasonably happy with it considering the low cost.
@frankfontaine4615
@frankfontaine4615 11 лет назад
the lag is probably a safety in case you over shoot your voltage you can correct it before your device your power breaks
@TheRedneckAtheist
@TheRedneckAtheist 11 лет назад
Does the spike go away when you hook up the ground on the back?
@wernertrptube
@wernertrptube 5 лет назад
If a former guy has totally dejusted the menue.What is then your Setup time to get an Output Voltage ?
@wesz9907
@wesz9907 9 лет назад
What's with that Power Up Voltage Spike? Seems kind of tragic depending on if you had something connected. Possibly could take out that high end processor on that $100K proto board you mentioned. But maybe no current flow at Power Up? I don't think you checked power up current with the load, just the voltage. Thanks for the review.
@PeterWalkerHP16c
@PeterWalkerHP16c 8 лет назад
+Wes Z Yeah bit odd that. I mean even the old audio amps had a relay that kicked in when the amp was stable after power-on. I'm sure that would be an easy fix.
@YellowsourceOrg
@YellowsourceOrg 11 лет назад
I would love to see how this device is chained up for a positive and negative power-supply and how it performance on that. Any idea Dave? (think op-amps). Or is this a stupid question?
@RandyLott
@RandyLott 11 лет назад
Do you suggest getting one of these bad boys rather than a used Agilent?
@MarkShannonroad_videos
@MarkShannonroad_videos 11 лет назад
Nice little power supply. Not bad for just over $400.
@CraigOverend
@CraigOverend 11 лет назад
Looks RGB to me, you can see the theme colours red, green, blue, white all together at 21:30.
@MatrixOfDynamism
@MatrixOfDynamism 9 лет назад
What alternatives exist with similar features?
@CurvedSlightly
@CurvedSlightly 7 лет назад
So this PSU can only supply up to 3A? or max 195Watt on a single channel @ specific voltage?
@CurvedSlightly
@CurvedSlightly Год назад
Thanks for answering, wanker.
@sergioandres0791
@sergioandres0791 10 лет назад
HOW CAN I SWITCH THE CV MODE TO CC MODE?
@alucard87
@alucard87 11 лет назад
hehehehe :) dave, at 15:45 you pointed at the Amps resolution and called it volts resolution :D i know i'm being childish, but i chuckled at it, and no harm done, everybody makes mistakes ;)
@hansonsux
@hansonsux 10 лет назад
Nice power brick.
@MrElektrolyt
@MrElektrolyt 11 лет назад
20:00 could have safed my ass last week, put on 12 volt on the 3 volt rail - nice fire arc out of the cpu! Now delivery was on friday and customer is in japan! But what can you do when big corp says you only need to spend 50 euros on a bench supply?
@LPFthings
@LPFthings 11 лет назад
Would think they could have put a few relays on the outputs to prevent those spikes until the PSU had booted and settled.
Далее
EEVblog #861 - Rigol DP832 PSU FAIL & REPAIR
35:43
Просмотров 208 тыс.
EEVblog #1293 - New Rohde and Schwarz NGP800 800W PSU
39:52
Schoolboy - Часть 2
00:12
Просмотров 5 млн
Иран и Израиль. Вот и всё
19:43
Просмотров 1,5 млн
Symmetrical face⁉️🤔 #beauty
00:15
Просмотров 3,6 млн
EEVblog #315 - Korad KA3005P Review/FAIL
29:55
Просмотров 224 тыс.
A Perfect Electronics Bench?
14:01
Просмотров 50 тыс.
#1092 Rigol DP832A gets a new fan
24:09
Просмотров 4,2 тыс.
Bench Power Supply Repair (TTi CPX400A)
32:23
Просмотров 148 тыс.
КРАХ WINDOWS 19 ИЮЛЯ 2024 | ОБЪЯСНЯЕМ
10:04