I can fill my gas car in 5 minutes, this makes an EV essentially no different. I don't want to sit around 15 minutes to fill up my car on a road trip that also increases stall throughput 3X.
I think Chinese are taking the correct approach focusing on charge speed rather than range, although their range is going up too using LFP batteries that are very safe and have long cycle life.
You can’t fill your car with gas overnight while sleeping, however.
Don’t get me wrong. I think these chargers are very useful, but the ultra fast ones are not as critical for EVs ad a fast gas station is for ICE vehicles.
Yes charging at home is great until you need to go on a long road trip or you live somewhere without the ability to charge overnight.
I can charge overnight but I am not going to give up a gas car until the fast charging situation is better. I do have an EV around town and its great, but the road tripper is gas, looking at PHEV as a middle ground for next car.
These are typically LFP batteries that already have significantly longer cycle life and are a much more stable chemistry than the NCA / NCM cells in normally found in western cars.
The cells are also designed toward charge speed vs capacity (more copper less lithium) and cooling systems capable of keeping batteries at good temps even with 10C charging, so overall they are shooting for million mile batteries, I don't think people realize how robust LFP's are and that China is all in on that chemistry and the progress being made there.
I remember the original Scorched Earth being one of the few games that could actually do SVGA graphics at the time.
Most games of the era where 320x240 8 bit 256 colors, I had a 286 with 800x600 SVGA monitor and that game could actually use it although it was only 4 bit 16 color, don't think I ever played the 256 color in the last version.
You can create a pseudo-differential input by combining two input channels on almost every scope. That's not the problem the differential probe is solving, though. The differential probe exists to provide a differential measurement between two voltages that may be isolated or significantly different than the ground voltage of your oscilloscope.
The ground lead on your probes is connected straight to the ground on the power cable. This gets new users in trouble when they're probing power circuits and they don't realize that connecting the ground part of the probe to something will cause a short to ground. If that ground clip pops off and brushes against the high voltage you're trying to probe, you get sparks and maybe a destroyed scope.
The differential probe provides isolation and rejects the common-mode (shared) voltage between the two probe points before it gets to the oscilloscope.
I don't know about that USB probe, but I prefer not to have single-purpose instruments that require their own desktop software to use.
I understand what a differential probe does, what I don't understand is why they are so expensive. Again one can get a whole USB differential scope for the same price or less. Seems like just a differential probe should be relatively inexpensive well under a $100.
The Tiepie software actually works very well even though it's Windows only, they do have Linux library, just no GUI on Linux. Its not single purpose its a full oscilloscope that happens to use differential inputs.
They actually do sell one more purpose built for power quality analysis which is new. I would love to have a couple on my home power split phases to view and log power quality in detail: https://www.tiepie.com/en/usb-oscilloscope/handyscope-tp450
The thing you posted isn't the same thing as a differential probe. It's a single input low bandwidth scope that floats at the common mode voltage, with an optically-isolated data output.
Now, let's say you want to probe two things at the same time (triggered by a common signal source). You can't. And the reason you can't is because the producer took the expedient of floating the entire scope, and there's no trigger input.
In other words, they took the cheap way out by not actually building a differential probe. Related to that, this thing doesn't appear to have a step attenuator, which is why the effective resolution depends on the volts/div setting of the input.
Also, they don't specify the CMRR, which is one the main figures of merit people look for on differential probes. Any capacitive coupling between the scope and ground is going to degrade CMRR. So who knows if it can actually measure anything useful.
You can buy a scope with multiple optically-isolated channels as well as a trigger input, but those end up costing as much as a differential probe. Because it turns out that achieving good CMRR when you have multiple inputs is as hard a problem as making a good differential probe.
This is not to say the product you linked shouldn't or can't be used for anything, but it is a niche product. That's probably why it is advertised as a "power quality monitor" and not an "oscilloscope".
>Now, let's say you want to probe two things at the same time (triggered by a common signal source). You can't. And the reason you can't is because the producer took the expedient of floating the entire scope, and there's no trigger input.
Yes this is very inexpensive single input scope, they make more expensive multi input scopes you can stack as many as you want and have them synced:
The difference in price between their single ended and differential scope is not the much so it seems the actual differential part is not the expensive part, back to my original point.
>Related to that, this thing doesn't appear to have a step attenuator, which is why the effective resolution depends on the volts/div setting of the input.
>This is not to say the product you linked shouldn't or can't be used for anything, but it is a niche product. That's probably why it is advertised as a "power quality monitor" and not an "oscilloscope".
From their spec page: "The tables below show detailed specifications of the Handyscope TP450 high voltage oscilloscope."
and
"The Handyscope TP450 is delivered with the versatile Multi Channel oscilloscope software, which transforms the Handyscope TP450 into an oscilloscope, spectrum analyzer, data logger, multimeter and protocol analyzer."
They make quite a few differential scopes, that just happens to be a inexpensive one physically deigned for power quality analysis.
A good differential probe has to use precision components combined with careful factory trimming and calibration to get good common mode rejection ratio.
The CMRR of the Micsig I linked is pretty average, but it's a lot better than the TiePie at low frequencies. Micsig also specifies it at multiple points across the spectrum, while TiePie doesn't even say where they measured it.
It's all the differences like this that make good test gear expensive. The Micsig is not expensive on the scale of these devices. The professional gear will have even better specs, calibration, long-term stability, temperature stability, and many more features.
For playing around, the TiePie thing will do fine.
>The CMRR of the Micsig I linked is pretty average, but it's a lot better than the TiePie at low frequencies. Micsig also specifies it at multiple points across the spectrum, while TiePie doesn't even say where they measured it.
It worse at high frequencies and the same in the middle. Again this is a whole scope compared to a probe.
Not sure why you think Tiepies are toys, they are use professionally in Europe, popular for automotive. They have a lot more expensive scopes, and the price difference for the differential versions are not that much.
Now go look up why they stopped riveting ships in the 40's and went to welding, there are no modern riveted ships. Even with the rivets they were forged not pressed, nothing like a screw.
Cheap aluminum boats are still riveted, welding preferred for obvious reasons. I have an old riveted aluminum John boat and is leaks through the rivets and seams...
I think you may need to think out your entire post before typing such contradictions.
Riveted hulls worked for hundreds of years and well maintained they can last forever. Just bacause welding makes it cheaper to maintain in the long run does not detract from the fact that riveted hulls are very performant, which is why they were used everywhere that needed not only waterproofing but pressure containment too.
Air gapped means... there is nothing except air in the gap between systems.
A physical tether would defeat it.
Now, I pedant could start talking about wifi, but air-gapping is a concept older than the internet. (It stems from plumbing where there's air that prevents back leakage of contamination).
This is one of the main problems I have with LLMs. It finds patterns in words but not content. I see this in code reviews and eventually outages. Something looks reasonable at the micro scale but clearly didn’t understand something important (because they don’t understand) and it causes a major issue.
>Cache locality by default. In a traditional row store, reading all player positions means loading entire rows — names, inventories, health, everything. Most of those bytes are wasted.
Not one mention of column stores? This didn't come from ECS...
The batteries and phone lines were one system at -48v with power supplies converting AC power to DC while grid / generator is up.
The batteries are floated at the line voltage nothing was really charging or discharging and there was no switchover.
This is similar to your cars 12v dc power system such the when the car is running the alternator is providing DC power and the batteries float doing nothing except buffering large fluctuations stabilizing voltage.
I think Chinese are taking the correct approach focusing on charge speed rather than range, although their range is going up too using LFP batteries that are very safe and have long cycle life.
Good video here looking at the future for EV that is already a reality over there: https://youtu.be/ajim7KF30jE
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