EEVblog 1550 - Keysight E36731A Battery Emulator Teardown
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10 місяців томуTeardown the new Keysight E36731A Battery Emulator & Profiler
www.keysight.com/us/en/produc...
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#ElectronicsCreators #Keysight #Teardown
@ableite 10 місяців тому
Do they emulate duracell leaks? if not, then it is incomplete....
@EEVblog 10 місяців тому
Paid software option.
@cvspvr 10 місяців тому
@@EEVbloglootboxes are coming to battery emulators
@bobert4522 10 місяців тому
Gotta pay the nude bearded virgin to perform it hands on
@policyprogrammer 10 місяців тому
If you don't need uA and can get by with a few mA accuracy, you can use an Instek GPP-4323 power supply to emulate batteries. Two of its channels can be configured as loads and with a little bit of clever instrument programming, you can wire up a load channel and supply channel together to act as a two quadrant thingy. Janky, yes, but effective, and 1/10th the price.
@Shrek_Holmes 10 місяців тому
instek is much cheaper than these western brands. and they are a bit better quality than other cheaper brands like Rigol and Siglent.
@kurtiunlisted8589 10 місяців тому
that little ceramic capacitor PCB might be a result of supply chain problems.
@EEVblog 10 місяців тому
Could be.
@funtechu 10 місяців тому
Yeah, that's my guess as well. There have been terrible shortages over the last three years in the MLCC and polycap markets.
@AlphaCharlieFour 10 місяців тому
Another great teardown! Thanks for recording in fork-A so we can see all the great details. I always learn so much when I watch your videos.
@EEVblog 10 місяців тому
Yeah, teardowns are the one thing I think 4K is useful for. Most other stuff I shoot is still 1080p
@WhiteBream 10 місяців тому
4:40 4-Quandant is about sourcing and sinking negative voltages in addition to sourcing and sinking just positive voltages for a 2Q supply.
@pantelisEVs 10 місяців тому
Glad that you made a teardown! I was so hyped and curious for the inside from part 1. Thanks!!!
@flymypg 10 місяців тому
I really like the overlay of specs and other info during the disassembly. Keep this!
@KeritechElectronics 10 місяців тому
Yeah, a thing of beauty, a joy for ever. Definitely a nicely built device. Easy to discombobulate and recombobulate. Planar transformers, definitely an interesting thing. Thermistors on the output connectors? Interesting too. The power supply looks like it means business and does it well.
@DrFrank-xj9bc 10 місяців тому
very interesting, well analyzed and explained. thank you, Dave!
@Haarschmuckfachgeschafttadpole 10 місяців тому
Was waiting for this after watching the first video on it.
@SirHackaL0t. 10 місяців тому
Cheers for clearing up the confusion. 😂 ‘A battery emulator emulates a battery’
@FBender 10 місяців тому
Teardown is my favorite segment. Thanks!
@TheLOD2010 10 місяців тому
Just some detail: ST and Bosch are sharing not only their semiconductor processes, they are sharing the font of the chip markings too. Bosch is easily to tell, they often use a data matrix code on their chips for traceability.
@richardbrobeck2384 10 місяців тому
That unit looks like it was well designed a built looks worth every penny !
@menash54 10 місяців тому
About the relay you talked about at 15:31. It might be the output relay to ensure complete disconnecting of the DUT from the source. It is well explained in Keysight University course PRACTICAL POWER SOURCING AND MEASUREMENT CONSIDERATIONS. - lesson 2 12:00 - page 45 on the handbook (apparently I cannot put links in here)
@chrisridesbicycles 10 місяців тому
Perfect timing. I have my first battery powered project on the horizon and it will not be easy. Product manager is looking at 5-10 years out of a lithium primary so no time to test in in real life. The device draws high currents for short times. It would be very nice if you could show the capabilities of this beast when it comes to simulating pulsed load reaction if a battery.
@nattyrights 10 місяців тому
I'm not so savvy, so I really enjoy sitting in on EEVblog videos. #sponge
@lupojacobo9892 10 місяців тому
That is a beast piece of ⚙️
@user-ek9go3kf2w 10 місяців тому
Nice, those engineers did a good job.
@typxxilps 10 місяців тому
really clean design
@commanderguy-rw7tj 10 місяців тому
noo way, I was just looking at battery emulators literally yesterday cause I need one lmao
@classicaudioadventures 10 місяців тому
Someone had fun laying out the power supply.
@fmashockie 9 місяців тому
would not want to have to troubleshoot that when it fails lol
@johnsonlam 10 місяців тому
Fantastic!
@fly-lucky 9 місяців тому
I'd like to see you using the thing and all the functions not just the tear down. Good stuff tho. Looks better quality than my korad kel electric load
@bentboybbz 10 місяців тому
On one hand having the fan keeping it cool for the many hours it will need to run may seem like a good feature but at that price point you are maybe expecting a passive cooling solution for multiple reasons including price. Keeping dust out,no fan to fail and cause failure of the device,noise,probably keeps temperatures more stable which I think may be a good idea for sensitive test equipment,I'm sure some of the things I mentioned are not important and there are some things I've missed but I'd like to hear your thoughts on the subject! Thank You For Your Time And Effort!
@jaro6985 10 місяців тому
You can't have passive cooling for a 200W load without killing the BOM cost and weight.
@absurdengineering 10 місяців тому
@@jaro6985Big-ass heatsinks are not cheap but they do the job. Even at 250W. Half of it would be a heatsink but hey, they had things with bigger heatsinks *and* a fan in their DC 40year old+ lineup.
@ptr1275 10 місяців тому
Dave, you keep mentioning this is only a 2 quadrant not 4, like that’s stopping it from doing its job. A 4 quadrant can source or sink current from positive and negative voltages. 2 quadrant is typically sourcing or sinking current only from positive voltages.
@pmatil1 10 місяців тому
I spy old HP style heatsinks on those TO* devices. Classic. Also the physical format seems like the old HP style as well, like the 6033A that I'm currently refurbishing.
@QsTechService1 10 місяців тому
I would definitely be wearing a static Ban myself too Taking this thing apart A expensive piece of equipment
@ACURAOCULTA 10 місяців тому
Very good
@albertorobinson7611 10 місяців тому
cheers
@JYelton 10 місяців тому
Would love to see battery emulation for primary and maybe secondary Lithium chemistries. Does it allow you to simulate batteries at various states of discharge? Very nice bit of kit.
@Ferraday 10 місяців тому
2:16 it’s not a 200W jobbie! 2.4kW and 1.2kW.
@andrew2004sydney 10 місяців тому
They have a 20kW Photovoltaic Array Simulator - WOW!
@janbrittenson210 10 місяців тому
It seems all the LXI-11, web browser interface, etc, is implemented in the STM32G474, without anything like Linux or Windows CE. That is a pretty significant firmware task.
@jaro6985 10 місяців тому
No way that is the case, the RJ45 port goes from the back to the front panel, so the web interface has nothing to do with the STM32. Dave didn't show the front panel processor.
@309electronics5 10 місяців тому
It aint that stm32g474 running the software, absolutely no way plus its not even on the front panel board. That MCU is probably controlling/housekeeping that power board. By the way when you zoom in you can just about read the 2 chips on the front panel board. The cpu (big square chip without pins on side) is a stm32h750xbh6, there is also a seperate microcontroller on that board labeled stm32f030c6t6
@hgbugalou 10 місяців тому
Glad mean well is still making quality psus.
@KBElek 10 місяців тому
Interesting to see that they reuse the electronic load modul from there EL34143 EL
@maxtorque2277 10 місяців тому
Is the output terminal temperature sensing to voltage compensate for the thermo-electric effect of the brass output terminals and the copper of the pcb to which they are attached?
@jackwhite3820 10 місяців тому
If you were that concerned about precision, you would use the 4-wire connection. I think it's just for protection, in case someone connects 1.5 mm² wires to the front screw terminals and tries to push 40 A over it.
@dreamcat4 10 місяців тому
this might sound dumb, or a waste of equipment... however with such a decent current resolution does that mean you can find a power rail short circuit on a faulty pcb? by probing / injecting a current across different locations. i believe tsp demonstrated this using some other different model psu
@ediseverywhere 10 місяців тому
I wonder if the capacitor bodge boards are due to supply chain issues.
@maxtorque2277 10 місяців тому
this^^ absolute nightmare with parts supply for the last couple of years, desiging in something that you then cant' actually buy....
@bobert4522 10 місяців тому
I wonder if that capacitor daughter board is simply just a transient absorber for that relay coil.
@glenslick2774 10 місяців тому
Keysight needs to add a Batteroo emulator option to this product line.
@andrew2004sydney 10 місяців тому
Nice teardown and nice machine. For such a large financial investment, why wouldn't you just buy lots of sets of batteries for testing the product you are developing?
@joegee2815 10 місяців тому
Has anyone done a test of the Kensington lock standard? I mean other than the shit-ton of things that use it that have been stolen.
@ArifKhan-bp9zx 10 місяців тому
Which exact MosFETs are used as Electronic Load?? I find it really hard to select a MosFET specially for powrr dissapation...
@jtb2586 10 місяців тому
11:18 Wait a minute, are you not using a wireless grounding strap? So inconvenient having a wire attached to your arm
@ailivac 10 місяців тому
What's a "four quadrant" or "two quadrant" power supply? I assume it refers to some kind of X-Y plane, but what are the axes?
@jaro6985 10 місяців тому
Google four quandrant power supply and youll see a chart.
@Chris_Grossman 10 місяців тому
Also a usb charger!
@khalifaalzaabi8230 10 місяців тому
Hello my friend, if you can review the scale UNI-T UT117C
@hgbugalou 10 місяців тому
Dave wants a fanless 200 watt dummy load. On the flip side you could have a 4th function to cook your bacon on top. 😂
@LawpickingLocksmith 10 місяців тому
Hanky Dory?
@EEVblog 10 місяців тому
Hunky-dory
@RooMan93 10 місяців тому
if Dave doesn't emulate the Batteriser, I'm not gonna recycle of a whole day.
@Lvvcassss 10 місяців тому
So this works as both source and sink? A pricey one and not so powerful. But hey, if precision is the (no pun intended) key, it might be useful. I prefere Elektro-Automatik bidirectional PSUs.
@jeetlodaya775 10 місяців тому
What is the part number of main application processor?
@309electronics5 10 місяців тому
Zoomed in a read, stm32h750xbh6 as the main cpu, the second st chip also seems like MCU and has as part number stm32f030c6t6 wow this thing has like 1 cpu and 2 mcus controlling it
@groovejet33 10 місяців тому
G’day Sheila 🤔👍 G’day Bruce 🤔👍 Yeh bloody Flaming Galare’s😉 I hope yeh’all not Dead as a Doe doe’s Donger🤔🤪👌
@trickyd499 10 місяців тому
and now put it back together :)
@nigozeroichi2501 10 місяців тому
$4,700 🤯 holy 💩
@shazam6274 10 місяців тому
Plus software and accessories.
@Kirillissimus 10 місяців тому
@@shazam6274And don't forget about the juicy paid options and time limited licenses! I would not even be surprized to see separate paid battery discharge profile packs recorded from various real AA cells, AAA cells and so on from different manufacturers going for something around 1k$ each provided for doing more extensive and realistic tests with extra precision.
@HectorLopez-jw2ke 10 місяців тому
More than one application video
@JezCunningham 10 місяців тому
240W ? Nah - 2400W
@skyking6989 10 місяців тому
$4700? Ya little outta my price range
@Kirillissimus 10 місяців тому
Yea, like if they dropped an order of magnitude from the price then I would think about buying it. I guess I'll have to wait for some rough functional clones to come from China...
@xani666 10 місяців тому
I want to see it in action, not in parts!
@NebukadV 10 місяців тому
The front panel looks incredibly cheap for a ~5000+$ instrument ...
@absurdengineering 10 місяців тому
It’s nice inside but the industrial design of the front panel is atrocious. Done without any sense of balance.
@wojtecz 10 місяців тому
I have a battery emulator - an battery
@maybehuman2148 10 місяців тому
There is a lot of wasted space in this thing.
@AndJusticeForAll...1985 10 місяців тому
I want to start building my own audio amplifiers. Some book that teaches a bit about everything, does a great job explaining things in fine detail. Any recommendations. Something that is well known? Thanks thanks
@AndJusticeForAll...1985 10 місяців тому
@@eevblog_2. oh for real? Hell yeah
@AndJusticeForAll...1985 10 місяців тому
@@eevblog_2. what is it
@stevenbliss989 10 місяців тому
So what are Q2001 & Q2003 etc. ??????
@stevenbliss989 10 місяців тому
The battery emulation seems PATHETIC as it does not seem to allow for charging, ...am I wrong, and if so HOW does it emulate battery charging???
@Firecul 10 місяців тому
It could use the load to sink the incoming current and slowly raise the voltage of the output of the power supply I guess. According to the datasheet for it: "You can perform charge, discharge of a battery, and use it to automatically create battery profiles at various test conditions[...]" so it can get the profile of the battery but I see it mentioned nowhere that it could emulate the charging. Iirc Dave does say it would need 4 quadrant architecture to mimic the charging function though.
@stevenbliss989 10 місяців тому
@@Firecul EXACTLY, that is why I am confused. I wish Dave would clarify this being a US$4.7k item.
@bobzollo8753 2 місяці тому
This is what is known as a 2 quadrant supply. Quadrant 1 is a power supply used for charging the battery or positive current. Quadrant 2 is a load used for discharging the battery or negative current. It doesn't need to be 4Q because you never want negative voltage on a battery. Or, as a battery emulator, these power supply and load blocks , with proper digital control, allow the instrument to emulate battery. If the emulated battery is sourcing current = discharging, the power supply does this. If the emulated battery is absorbing current = charging, the eload does this.
@danielegger6460 10 місяців тому
RLY for a relay connector? en.wikipedia.org/wiki/O_RLY%3F
@lolsypussy Місяць тому
I've created a functional tester for a device that runs on Li Ion. I used a buck converter whose output could be adjusted to emulate the battery voltage based on overdischarged, nominal, and overcharged levels. The charging IC has test points to verify the status while charging on those different voltage levels. The concept didn't work because I forgot to consider the CC/CV profile. I even used my power profiler to slowly ramp the voltage and see at what voltage the IC starts to charge. I'm still working on how to emulate a battery using a buck 😔
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