Post Ac61oMTr1JymOt5eL2 by fcktheworld587@social.linux.pizza
(DIR) More posts by fcktheworld587@social.linux.pizza
(DIR) Post #Ac5EBlT7Hmfgqsi95c by dgar@aus.social
2023-11-22T21:57:20Z
0 likes, 1 repeats
Universal adapter.
(DIR) Post #Ac5MMCtgxdfKRvdEHo by zombywoof@mastodon.org.uk
2023-11-22T22:29:41Z
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@dgar That's a 220-240v wall receptacle with 110-115v plug...not a good idea
(DIR) Post #Ac5MMDmze1txDRVOU4 by fcktheworld587@social.linux.pizza
2023-11-23T03:26:39Z
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@zombywoof @dgar plus running through that stainless steel will raise the voltage further
(DIR) Post #Ac5MSjLJF5o4oZezQG by hllizi@hespere.de
2023-11-23T00:20:24Z
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@dgar type casting
(DIR) Post #Ac5MSkBm61m3RICtCS by fcktheworld587@social.linux.pizza
2023-11-23T03:27:50Z
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@hllizi @dgar totally underrated comment dude
(DIR) Post #Ac5y9QILdMcyUlUmzw by stuartl@mastodon.longlandclan.id.au
2023-11-23T10:02:41Z
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@fcktheworld587 @zombywoof @dgar Actually no… (dusts off EE degree)… the fact that it's stainless steel will raise the *resistance* of the circuit, which will cause a *voltage drop* across the nail clippers proportional to the *current* flowing through them.V = IR -- Ohm's Law.That power loss (P=I²R) will be seen as heat dissipation. The conductors there, whilst not ideal, seem big enough to handle the likely small amount of current. I doubt it's 10A flowing through that.The dangerous bit about this is the fact that there is no insulation to prevent someone from making contact with the active or neutral circuits.Human skin resistance at 230V (or even 110V) is not sufficient to keep current flow below safe levels, so the current flow may cause fibrillation of the heart.If it weren't for that, it wouldn't be any more dangerous than a proper travel adaptor. (Which would comply with AS/NZS:3000.)
(DIR) Post #Ac5y9RHfxLgTYyBlaa by fcktheworld587@social.linux.pizza
2023-11-23T10:30:06Z
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@stuartl @zombywoof @dgar I was under the impression that an equivalent current flowing through a greater resistance would result in a higher voltage
(DIR) Post #Ac5zSWIXdeKeZOFwMS by YetAnotherGeekGuy@hachyderm.io
2023-11-23T10:44:47Z
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@zombywoof @dgar @stuartl @fcktheworld587 Higher voltage DROP (across the nail clippers) resulting in LESS voltage to the plug/cord/device.
(DIR) Post #Ac5zcwoRudhHhQ9Xma by Suiseiseki@freesoftwareextremist.com
2023-11-23T10:46:37.548456Z
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@fcktheworld587 Voltage shouldn't be a problem regardless provided that's attached to a decent PSU that accepts AC power 100-250V @ 50-60Hz (like most PSUs today).Decently designed PSUs of a certain kinds don't even care if you input DC (i.e. let's just pass through this already rectified power and just do voltage conversion on it).
(DIR) Post #Ac5zr7TF5E1IoBzWGO by fcktheworld587@social.linux.pizza
2023-11-23T10:49:15Z
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@YetAnotherGeekGuy @zombywoof @dgar @stuartl my thinking was that with an equivalent draw, we would see a decreased current, with an increased voltage, possibly bringing us above the 300v necessary to cause an arc through air at STP, resulting in a higher likelihood of experiencing a shock
(DIR) Post #Ac60TAbHtZ8FWGtkoa by fcktheworld587@social.linux.pizza
2023-11-23T10:56:07Z
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@Suiseiseki again, the PSU and the device were less-so my concern than the possibility of someone getting close enough to cause an arc, unintentionally, and to receive a potentially fibrillatory shock, resulting in their potential death
(DIR) Post #Ac61Ob6a1XS8EEv0qG by stuartl@mastodon.longlandclan.id.au
2023-11-23T11:04:50Z
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@fcktheworld587 @YetAnotherGeekGuy @zombywoof @dgar Nah, the voltage of the system here is decided well and truly behind that wall socket (at the mains grid actually).You'd need some sort of energy storage, or a transformer, to "change" the voltage. Those nail clippers are too far apart with the air dielectric to create anywhere near even 1pF of capacitance… and the inductance will be bugger all at that length. So nothing to "store" the energy… and there's no secondary winding to make a transformer.
(DIR) Post #Ac61R97mVmIKJihCeO by Suiseiseki@freesoftwareextremist.com
2023-11-23T11:06:54.112418Z
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@fcktheworld587 >someone getting close enough to cause an arcI don't know very much about the behavior of electricity, but I would reckon that at the voltage and amperage that's running at, it won't arc (considering the metal terminals are separated by 2mm of air and there isn't any visible arcing) and getting close wouldn't be a problem - but you would clearly receive a shock if you touch it and you're an easier path for the electricity to travel.
(DIR) Post #Ac61Twya8SK7VZjJT6 by stuartl@mastodon.longlandclan.id.au
2023-11-23T10:56:30Z
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@fcktheworld587 @zombywoof @dgar Depends on where you measure the voltage. If you measure across one of the nail clippers (i.e. between the mains socket and the appliance plug)… you will see a slightly "higher" voltage than you would if it were a proper copper bus bar of the sort seen in a travel adaptor.Same with the other nail clipper.The voltage at the socket terminals has not changed though… so those "increases", *subtract* from what the appliance sees.If we pretend it's a 240W appliance… at 240V, that means it'll draw 1A.Now, suppose that stainless steel is 1ohm (it won't be, it'll be a lot less!)… 1A flowing through 1ohm of resistance, will cause a voltage potential of 1V across the resistance.Whether the appliance consumes more current because of the voltage drop, depends on the appliance. A pure resistive load won't, a switch-mode PSU might… but 2V drop represents less than 1% -- mains fluctuates more than that anyway.
(DIR) Post #Ac61TxvQbfOYS5GJBw by fcktheworld587@social.linux.pizza
2023-11-23T11:07:27Z
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@stuartl @zombywoof @dgar that was also my understanding of it. My concern re: increasing voltage @ the stainless steel was that this is an exposed conductor, with a bit higher resistance, already receiving a current @ 220v, potentially resulting in a sustainable current above 300v, should someone get too close, meaning it would be above the necessary threshold to arc through air at STP, resulting in a wider danger (though still small) area wherein one could receive a potential shock
(DIR) Post #Ac61iV6a2cfrPaPRAG by fcktheworld587@social.linux.pizza
2023-11-23T11:10:05Z
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@Suiseiseki 300v can result in an arc of 1/4" through air at STP
(DIR) Post #Ac61oMTr1JymOt5eL2 by fcktheworld587@social.linux.pizza
2023-11-23T11:11:09Z
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@stuartl @YetAnotherGeekGuy @zombywoof @dgar I appreciate the clarification! :)