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发表于: 08-06-2023 03:51:14
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So an update, I got my USB C Male Female cable and chopped it up... Apparently one of these newer cables with not only + and - but 6 other wires... and shielding. Well whatever I just needed the Energy wires and now running with the female plug. It seems like the other male plug from another cable is still the better one in regards of keeping cool, but sadly they don't seem to make straight female plugs, only Angles. But overall, the tester is okay hot, but nothing seems to be at the point of being able to cook an Egg to solid. Put the last passive small heat sink on the female plug. Hmm I don't know, maybe I should look into this other cable fabrication again and see if I can find a straight female or... I found some USB C that you can do yourself it seems. Then I can do some bigger wires, mostly all of the cables have small + - wires, although some have bigger then others. Although it might be the chips inside or whatever, that are the worst culprit for heat and some might work better then others I think.
Also got som 6 Amps USB A, male and Female. Haven't tested them yet under load to see if they keep more cool then the others. But whatever the case, we are going for the USB C choice. When the Tester itself gets some Passive cooling heat sinks it should further give it some help. Overall a big Copper one, would be nice to just plant it on. We are running 120 watts at the moment, that seem to be the max these days when the sun is high and in an further angel from the solar panels, in the spring I did 160 watts once, but as the Sun goes higher the angel as well goes more indirect into the panels and makes less. Anyway... I knifed a lot of old cables I had and had a look inside to do some intelligence service.
As a side note, I also got a USB C female to barrel plug 5.5*2.5 male for charging my Robot cleaner, DC to DC to save energy from my Storage unit but using the WITRN meter I can see it indeed does 20 Volts but it ends up giving way to much Effect wattage to it so it makes an error and fails. I tried different cables but sadly don't have any that does less then 60 watts and that is still nearly double the amount that it usually gets.
So apparently one needs either a plug that can do only around 30 watts or a Cable that makes it go down in transferring energy to it. If that can be sorted out I think this will work for charging it and save some energy yet as always a project in itself as usual, nothing made easy in this world. Some cables even did 100 watts, one did 105 watts from the USB C, so I guess they indeed to what they say on the machine.
Not sure if there exist any USB C cables that only does 30 watts or so - or if there is a plug that will make less wattage go through, but at least I know the correct plug now after testing the 2 I bought.
By the way the 6 Amps USB A adapters are from OTG and they are 3.0 - although not sure how good they are but they say Max 120 watts, but that is still more then the rest as far as I can see. At least not bad to have around to test USB A with the WITRN testers.
Well can't say the tester on the Solar Power Panels, or Light Volt source are cold, but they seem to do fine. Although the new Female plug does seem to be hotter then the male USB C plug that I first did. Whatever the case it is better then the USB A's that makes it possible to cook an egg on it. But it is very impressive that USB C Male keeping it pretty cool. Will be interesting to try things with 200 watts at some point and see if everything can handle it without heating up the Testers screen so it begins to black out. I think I have tried it 3 times now, no worries, the screens are fine and the Testers works without issue. Although I cut things at that point to be safe. The testers seems pretty robust. At least they are still surviving my hardship on them.
Anyway have more cables incoming and passive cooling and all so... And will further test things. I'll probably order the USB C make it yourself as well, and try that out as well so I can get some higher mm2 on the usb Cables. Even 0.75 mm2 seems small to me, but at least still a lot more then what these companies seem to put in the cables for power transfer.
I was wondering about the + - volts which seems to be data, as I have not connected them and yet it seems to show around 1 voltage on both on the meter, but they are not connected. But maybe it is something in the USB C plugs that makes something go through to them, dunno.
Anyway... I'll get back to things.
- Darkijah |
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