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I bought one at K-Mart. Its a very good item.Yesterday, I bought two of them in the sporting goods department at the
Wal Mart store.One of them is an Ozark Trail, LED Hanging Tent Light.It
has 24 LED lights arranged in a circle, runs on four AA batteries which
came with the light.And it is BRIGHT! Because I wear eyeglasses, when I
turn the light on and hold the light in my hand in just such a way,
there is a sort of a ''holography'' image of the 24 LED lights floating
in front of the real LED lights.COOL! I like that.
The other LED light I bought at the Wal Mart store is an Energizer
Weather Ready Light.3 IN 1 LED Flashlight.100 hour run time.360 area
light with 3 LEDs.Nightlight with amber LED.(four AA baterries included)
I think it is a COOL light too.
cuhulin
I bought one at K-Mart. Its a very good item.Yesterday, I bought two of them in the sporting goods department at the
Wal Mart store.One of them is an Ozark Trail, LED Hanging Tent Light.It
has 24 LED lights arranged in a circle, runs on four AA batteries which
came with the light.And it is BRIGHT! Because I wear eyeglasses, when I
turn the light on and hold the light in my hand in just such a way,
there is a sort of a ''holography'' image of the 24 LED lights floating
in front of the real LED lights.COOL! I like that.
The other LED light I bought at the Wal Mart store is an Energizer
Weather Ready Light.3 IN 1 LED Flashlight.100 hour run time.360 area
light with 3 LEDs.Nightlight with amber LED.(four AA baterries included)
I think it is a COOL light too.
cuhulin
german Schutzkontakt, security contact. There is a larger substation, maybeResidential power in Sweden is 400V 3 phase, main fuses normally 25A
or lower.
Room outlets are wired with one phase, neutral and ground to get 230V.
There is a smallish transformer station in the neighborhood which
probably powers two entire blocks. I would guess somewhere around 20-30
houses.
Absolutely the same here, in Greece we are using only Schuko sockets, from
german Schutzkontakt, security contact. There is a larger substation, maybeResidential power in Sweden is 400V 3 phase, main fuses normally 25A
or lower.
Room outlets are wired with one phase, neutral and ground to get 230V.
There is a smallish transformer station in the neighborhood which
probably powers two entire blocks. I would guess somewhere around 20-30
houses.
Absolutely the same here, in Greece we are using only Schuko sockets, from
or, as in the case of the transformer that feeds my house, pole mounted inIn article <x04p97adpr.fsf@hax.se>,
Thomas Tornblom <thomas@Hax.SE> writes:
Residential power in Sweden is 400V 3 phase, main fuses normally 25A
or lower.
Room outlets are wired with one phase, neutral and ground to get 230V.
There is a smallish transformer station in the neighborhood which
probably powers two entire blocks. I would guess somewhere around 20-30
houses.
Similar in UK.
In most European countries, there's a single phase current limit,
above which you have to take a 3-phase supply. In the UK, that's
100A, so it's not very common to have a 3-phase supply although
you can ask for one if you want a 3-phase supply. In some other
European countries, the single phase limit is as low as 20A, so
just about everyone has a 3-phase supply.
Residential substation transformers (11kV down to 230/400) are
usually 1MVA, feeding a number of streets. A substation may have
more than one transformer in some cases (although they usually
only start out with one). Obviously, smaller transformers are
used where there aren't so many houses, and these are sometimes
pole mounted if the wiring is overhead.
or, as in the case of the transformer that feeds my house, pole mounted inIn article <x04p97adpr.fsf@hax.se>,
Thomas Tornblom <thomas@Hax.SE> writes:
Residential power in Sweden is 400V 3 phase, main fuses normally 25A
or lower.
Room outlets are wired with one phase, neutral and ground to get 230V.
There is a smallish transformer station in the neighborhood which
probably powers two entire blocks. I would guess somewhere around 20-30
houses.
Similar in UK.
In most European countries, there's a single phase current limit,
above which you have to take a 3-phase supply. In the UK, that's
100A, so it's not very common to have a 3-phase supply although
you can ask for one if you want a 3-phase supply. In some other
European countries, the single phase limit is as low as 20A, so
just about everyone has a 3-phase supply.
Residential substation transformers (11kV down to 230/400) are
usually 1MVA, feeding a number of streets. A substation may have
more than one transformer in some cases (although they usually
only start out with one). Obviously, smaller transformers are
used where there aren't so many houses, and these are sometimes
pole mounted if the wiring is overhead.
That's interesting. Ozark Trail is Wal-Mart's brand for these sorts ofYesterday, I bought two of them in the sporting goods department at the
Wal Mart store.One of them is an Ozark Trail, LED Hanging Tent Light.It
has 24 LED lights arranged in a circle, runs on four AA batteries which
came with the light.And it is BRIGHT! Because I wear eyeglasses, when I
turn the light on and hold the light in my hand in just such a way,
there is a sort of a ''holography'' image of the 24 LED lights floating
in front of the real LED lights.COOL! I like that.
I bought one at K-Mart. Its a very good item.
Lead-acid batteries sulfate and then will not take a charge.Brian wrote:
I went to use a Smart-UPS 700 (true sine wave) after letting it sit
for a couple of years, and nothing happened -- plugging it in yielded
no LEDs, sounds, etc. Pressing the power on, off, circuit breaker,
and reset did nothing. The two 120V receptacles (wall plugs) I tried
are good.
I disassembled the unit, and found conductivity through the power
wires, the circuit breaker, and leads to the mainboard. The two 30A
32V fuses to the batteries are fine, but, as expected the batteries
are totally dead after sitting for a couple of years.
I didn't see any obvious damage to the UPS at all -- no hot parts or
connections. There was continuity, separately, through the two
transformer windings. I jiggled all the connectors and reassembled
the unit, and there was no change, even after leaving it plugged in
for a half-hour.
What else could cause absolutely no response from this UPS? Anyone
else had this experience with an APC UPS, and did you overcome it?
Seems like too nice hardware to just trash (after recycling the
batteries).
Thanks in advance.
-Brian
The battery is dead. For whatever reason, this causes a lot of UPS's
to behave exactly as described. If it sat for several years, the
battery will not take a charge, it needs to be replaced.
Use a telephone pickup coil. Lots of places used to do them over here. I'mI plug in my land line phone and I phone somebody.How can I record our
phone conversation and play it back so I can listen to what my voice
sounds like on the phone? Of course I know I would need to first ask the
person I phone to agree with our recorded phone onversation, I am pretty
sure the person would agree.
cuhulin
RadioShack also has an adapter that that goes between the handset and thecuhulin@webtv.net> wrote in message
news:25213-4824F5AF-352@storefull-3254.bay.webtv.net...
I plug in my land line phone and I phone somebody.How can
I record our phone conversation and play it back so I can listen
to what my voice sounds like on the phone?
Use a telephone pickup coil. Lots of places used to do them over here.
the HV side of the transformers, thus at 150 kV. Typical current for 2 x 25In article <WMGTj.5083$ch1.2983@trndny09>,
"James Sweet" <jamessweet@hotmail.com> writes:
It's not 110V, it's 240V, we simply split it with a grounded center tap
which gives 120V between each side and neutral, or 240V between the
sides..
It's the regulation at 120V which people notice.
If you want to call it a 240V supply, then you
need to call EU supplies 400V or 415V. That's
equally misleading.
There's no transformer per house, except rural applications. Generally
5-10
houses are on each transformer, sometimes more. The problem with long
runs
is that the voltage fluctuates substantially with large loads such as
central air conditioning. Standard North American residential service is
200
Amps 240V, I gather this is quite a bit larger than typical European
domestic stuff, so stretching it over 1km distance would require
prohibitively large cables or suffer from wide voltage swings. Makes more
sense to run 7200V down the street and locate a smallish transformer near
every half dozen houses.
The transformers are small in comparison, which gives poor
regulation in comparison (and as I said before, it's the
regulation at 120V which is the primary concern -- regulation
of 240V across 2 hots doesn't matter much for typical US 240V
loads).
The regulation, at least in Europe, is done at 150/15 kV substations and at
the HV side of the transformers, thus at 150 kV. Typical current for 2 x 25In article <WMGTj.5083$ch1.2983@trndny09>,
"James Sweet" <jamessweet@hotmail.com> writes:
It's not 110V, it's 240V, we simply split it with a grounded center tap
which gives 120V between each side and neutral, or 240V between the
sides..
It's the regulation at 120V which people notice.
If you want to call it a 240V supply, then you
need to call EU supplies 400V or 415V. That's
equally misleading.
There's no transformer per house, except rural applications. Generally
5-10
houses are on each transformer, sometimes more. The problem with long
runs
is that the voltage fluctuates substantially with large loads such as
central air conditioning. Standard North American residential service is
200
Amps 240V, I gather this is quite a bit larger than typical European
domestic stuff, so stretching it over 1km distance would require
prohibitively large cables or suffer from wide voltage swings. Makes more
sense to run 7200V down the street and locate a smallish transformer near
every half dozen houses.
The transformers are small in comparison, which gives poor
regulation in comparison (and as I said before, it's the
regulation at 120V which is the primary concern -- regulation
of 240V across 2 hots doesn't matter much for typical US 240V
loads).
The regulation, at least in Europe, is done at 150/15 kV substations and at
when a LeadAcid battery's plates are sulfated,the battery will not accept aJames Sweet wrote:
The battery is dead. For whatever reason, this causes a lot of UPS's to
behave exactly as described. If it sat for several years, the battery
will not take a charge, it needs to be replaced.
Thanks for the responses.
Really? Absolutely nothing -- no attempts at all to recharge, not even
flicker of the lights or a hum of the transformer? Dead as a
doornail ...
-Brian
when a LeadAcid battery's plates are sulfated,the battery will not accept aJames Sweet wrote:
The battery is dead. For whatever reason, this causes a lot of UPS's to
behave exactly as described. If it sat for several years, the battery
will not take a charge, it needs to be replaced.
Thanks for the responses.
Really? Absolutely nothing -- no attempts at all to recharge, not even
flicker of the lights or a hum of the transformer? Dead as a
doornail ...
-Brian
Yep, their called Super Conducting Transformers, and they have beenSo they have developed 100% efficient transformers?