INTL 3:770/1 3:770/3
REPLYADDR dave@davehigton.me.uk
REPLYTO 3:770/3.0 UUCP
MSGID: <1eb995715b.DaveMeUK@BeagleBoard-xM> 6968ba7e
REPLY: 359744a2
PID: SoupGate-Win32 v1.05
In message
Grant Taylor wrote:
> On 6/14/24 09:27, bp@www.zefox.net wrote:
> > One approach that sort-of works is to plug two walwarts (one for the Pi,
> > one for the hub) into a single 3-outlet extension cord, then coil the
> > excess wire (both mains and 5-volt) around the cleat- like object which
> > results and hold it in place by a cable tie or split conduit. I've done
> > a couple like this and it's ugly but better than loose wires. One can at
> > least see where each Pi plugs in.
>
> I would be careful -> avoid coiling low voltage with high voltage mains.
> My concern is that you would end up with something akin to a (poor)
> transformer of sorts. Wherein the high voltage mains would couple onto
> the low voltage lines. At a 1:1 ratio, you'd end up with the same high
> voltage on the low voltage secondary side.
>
> I don't know how many loops on a coil would be needed for this to be
> noticeable.
The mains cable has the live and return together all the way, twisted,
so the field cancels out. The transformer effect will never become
noticeable, no matter how many turns.
David
--- SoupGate-Win32 v1.05
* Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
SEEN-BY: 10/0 1 90/1 103/705 105/81 106/201 124/5016 128/260 129/305
SEEN-BY: 153/757 7715 218/0 1 601 700 840 870 930 220/70 221/1 6 360
SEEN-BY: 226/17 30 100 227/114 229/110 111 112 113 200 206 300 317
SEEN-BY: 229/400 426 428 470 550 616 664 700 240/1120 266/512 267/800
SEEN-BY: 282/1038 291/111 292/854 301/1 113 812 310/31 320/219 322/757
SEEN-BY: 335/364 341/66 342/200 396/45 460/58 633/280 712/848 770/1
SEEN-BY: 770/3 100 330 340 772/210 220 230 5020/400 1042 5058/104
SEEN-BY: 5075/35
PATH: 770/3 1 218/840 221/6 301/1 218/700 229/426
|
