Tony Duell skrev:
>> >Getting back to DIN plugs, I don't _like_ them being used for any form o=
>> f
>> >power connection, but many manufacturers did use them for low voltage
>> >(<20V) power inputs. It is reasonably safe to do that, even if it can
>> >prove unreliable in the end.
>>
>> Why not? I know that it doesn't latch very well, if that's your gripe.
>Because the contact area between pin and socket contact (the latter being
>a U-shaped thing) is rather too small for a power connector IMHO. Also,
>they're normally just tinned contacts, not gold or silver plated (I've
>seen gold and silver plated plugs in the catalogues, but not the sockets).
>It's probably OK as a low power connector, but why use it when there are
>better choices?
Because it's a DIN standard?
>> >Odd... No computer should ever assume that either side of the mains is
>> >grounded, and thus the safety ground shouldn't make any different to the
>> >working of the PSU (I assume the machine refused to power up at all). Ar=
>> e
>> >you sure the mains voltage was the same in both cases (did you check it
>> >with a voltmeter?)
>>
>> It did refuse to power up at all. Very queer.
>> And why would the voltages change? It's not as if we're running 110V in t=
>> his
>> part of the town.
>No, but PSUs can do odd things if given voltages which are marginally too
>high or too low. Yes, the mains could still be described as 230V (or
>whatever), but what was it really?
Can't tell now, nor would I ever dare poke a voltmeter into a wall outlet.
It was an old house, though, much older than electricity, but due to that, the
wiring seemed to be newer than here.
>> >That said, if you really don't have earths on the outlets in your new
>> >flat, sort the wiring out NOW, before an earth leak kills somebody.
>> >Safety grounds are there for a good reason.
>>
>> My "sorting it out" would sooner kill me or someone else. No way that I a=
>> m
>> going to peek inside live wires, and besides, earthing the flat would req=
>> uire
>> rebuilding the electric infrastructure of the entire complex.
>You mean it's still OK to wire power circuits without ground wires in
>your country? Ouch!!!. Remind me not to visit :-)
I don't know about the legalities, but earthed outlets are common practice
nowadays, though sometimes the earth wire, while present in the entire net,
isn't actually connected in the outlets of dry areas, apparently to accomodate
old plugs, but that's just what I've read.
Anyway, this building was built in the 60s, and back then, there was no such
legislature.
Besides, the UK doesn't seem all that well off according to what I've read. UK
ground is not the same as continental earth. I think it's got to do with the
lines being earthed at the station, whereas the continental earth lead goes to
a big piece of metal in the ground somewhere in the vicinity of the bulding.
Due to that, many kits can't be legally imported into the UK, since they
aren't safe when plugged into the UK electric system.
Or so they say.
--
En ligne avec Thor 2.6a.
Amiga 4000/040 25MHz/44MB/20GB RetinaBLTZ3/VLab/FastlaneZ3/Ariadne/Toccata
Received on Tue May 22 2001 - 20:41:46 BST