@unikoshardware Seen it and have done it. That's why I was surprised by the news from China.
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Jon Gerow
2K posts
Jon Gerow
@jonnygerow
aka jonnyGURU. Once computer hardware reviewer, now computer hardware creator.
World traveler. 가입일 Ağustos 2010
171 팔로잉253 팔로워
@jonnygerow please make a cable that includes metal comb + thermal switch.
btw have you seen this live testing yet
x.com/unikoshardware…
UNIKO's Hardware 🌏@unikoshardware
today asus lets us see the current detection in the software. the current balancing is great imo. and i was being a dick covering the pcb so that you can see the temp of the remaining 12v wires of the rog equalizer. furmark at 600w for around 30mins, 58.5c.
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ASUS ROG Equalizer $50 GPU cable designed to prevent burned connectors has reportedly burned
videocardz.com/newz/asus-rog-…
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@duncanstives Yes. Bleed resistors, etc. are a good design choice, but the charge needs somewhere to go. If the AC and DC are unplugged and all you have is a box with charged caps, there's nowhere for that energy to go. Nothing is going to solve that problem. At least, no practical solution.
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Filter caps are *supposed* to have bleeder resistors.
I did have an old benchtop supply that made the "interesting" design choice to handle energy stored in capacitors by simply shorting the output when powered off. The output literally went to an additional set of poles on the power switch and when you turned it off the positive and negative were just connected together.
With only a 3a max output it didn't really create a problem until some fool (me) was using it to charge a 12v battery and, when it was done, just turned it off. Bad idea 😬
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@Jin95127613 FYI: Over 400V. Bus voltage is determined by the design, not just VRMS x √2. In this example it is just under 420V.
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@jonnygerow The capacitors in the power supply unit are charged to nearly 400V.
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@Romulaten No, they didn't. The bleed circuit will want to send the energy to ground (without energizing the housing). This meets IEC 62368-1. The unit is unplugged. Therefore no Earth ground.
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@jonnygerow The manufacturer saved $0.10 on the discharge resistor.
International safety standards like IEC 62368-1 strictly require device voltage to drop to a safe level, usually under 60V, within 1 to 2 seconds of disconnection.
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@dr_sensor Ok. I'll make sure to let the current know ahead of time.
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@jonnygerow just don't let the current travel to your heart
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@amhayes8 @AttonMathews I know. When I mentioned moisture on skin, it was not in relation to skin capacitance. It was in reference to the increased conductivity of the surface of the human body. It's a shame the same word has to be used for both purposes, but that was my intent.
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@AttonMathews @jonnygerow Skin capacitance is a property of wires carrying AC, not humans. While frequency does play a role in electrocution hazards that's only at Mhz frequencies, not at 0Hz. The PFC bulk cap is charged at 400V+, if you present it with a discharge path through your heart it IS lethal.
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@alchemistocrat I was lucky enough to be in very dry conditions and was simply thrown back 10 feet. If I had been in my workshop in Florida, I'm sure I'd be dead. That was a long time ago. Fortunately, it only takes once to learn who's boss when f-ing around inside live circuits.
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@jonnygerow Anytime I see this sort of stuff I get goosebumps from remembering that one time I forgot to discharge a capacitor and got the shock of my life
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@AerialCar Tell that to those who have been killed. Oh wait.. you can't. 🙄
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@unikoshardware 6 months?!?! That connector wasn't plugged into the PSU all the way from day one.
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nvidia 5090fe, used for 6 months
asus loki sfxl platinum 1000w?
16pin melted badly on the psu side
r/ASUS
reddit.com/r/ASUS/comment…
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@unikoshardware Grrrrr!!! Plug it and leave it! Visual inspect from the outside!
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"I always unplug and inspect the 12VHPWR connector"
msi 5090 suprim (vertically mounted, kept >35mm straight 16pin cable routing)
corsair rm1000x (non atx3?)
corsair 8pin to 16pin direct cable used
16pin melted
my advice,
try not to always unplug the 16pin cable regularly
r/Corsair
reddit.com/r/Corsair/comm…
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@MTM35276486 @VideoCardz It's not a hard shut down of the PC. It shuts down the GPU. There are a few ways you can work your way to shutting down the PC properly from there.
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@VideoCardz Das ist dann aber ein hartes herunterfahren des PCs.
oder wird zuerst auf 450 Watt runter gedrosselt ?
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Corsair explains why 12V-2×6 still needs protection despite revised connector design
videocardz.com/newz/corsair-e…
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@unikoshardware What they've found is that by placing the conductive material at the distance from the connector where they did, they effectively doubled the capacity of each conductor. But only for that distance of wire between the terminal and the "Equalizer" cable comb.
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@jonnygerow would you make one like that with 3 dimple terminals ?
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hardware busters tested the asus rog equalizer 16pin cable again. this time aris put 17a load to the rog 16pin cable just to "verify" the 17a spec claimed by asus.
the cable is quite solid after all, the temps under load are sick!
a 16pin cable is good until it starts to melt. deformation is still my no1 suspect.
so, rog=for those who dare!
first test
hwbusters.com/psus/asus-rog-…
second test (latest)
hwbusters.com/psus/asus-rog-…
UNIKO's Hardware 🌏@unikoshardware
asus has told you that even the 8.67a imbalance (15a-6.33a) is still fine on the rog equalizer 16pin cable, as long as none of the 12v pins exceeds 17a(=abnormal). "normal: everything is running fine" for me, the main point is whether the 12v wires can safely handle 17a continuously. it is also unlikely that all six 12v wires would simultaneously pull over 17a. btw adding up the currents in the example given by asus on the product page, 6.33a+17.1a+12.5a+15a+8.2a+6.35a=65.48a 65.48a x 12v=785.76w maybe this was tested on rog matrix 5090 with a fake gc_hpwr input so that the matrix 800w bios drew almost all the power via the 16pin header.
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@unikoshardware Yep! Nothing special about their terminals or connector. They're still the same 8.5A rated stuff everyone else uses. The reason Asus says each conductor or terminal or whatever they say supports 17A is not because it ACTUALLY supports 17A each from a mechancal standpoint.
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