Tema: Re: 220V ar 230V ar 240V ?
Autorius: Levas
Data: 2009-11-14 14:31:32
gali buti kompromisai, gali buti tos pacios pcb naudojamos skirtingom salim, galu gale yra tokia iskrypusi salis kaip Japonija. :)

Although the mains voltage in Japan is the same everywhere, the frequency differs from region to region. Eastern Japan uses predominantly 50 Hz (Tokyo, Kawasaki, Sapporo, Yokohama, Sendai), whereas Western Japan prefers 60 Hz (Osaka, Kyoto, Nagoya, Hiroshima). 

O beto, pas amerikonus elektros sistema gana atsilikusi (kaip sistema) todel, pas juos itampa dar labiau svyruoja. Todel ir 240 pas juos nevisada buna. Gal jie irgi raso vidurkius.

United States of America120/208 V / 277/480 V

Originally Europe was 120 V too, just like Japan and the US today. It has been deemed necessary to increase voltage to get more power with less losses and voltage drop from the same copper wire diameter. At the time the US also wanted to change but because of the cost involved to replace all electric appliances, they decided not to. At the time (50s-60s) the average US household already had a fridge, a washing-machine, etc., but not in Europe. 

The end result is that the US is still evolving from the 50s and 60s, and - mostly in older buildings - still copes with problems as light bulbs that burn out rather quickly when they are close to the transformer (too high a voltage), or just the other way round: not enough voltage at the end of the line (105 to 127 volt spread !).

Note that currently all new American buildings get in fact 240 volts split in two 120 between neutral and hot wire. Major appliances, such as virtually all drying machines and ovens, are now connected to 240 volts. Mind, Americans who have European equipment shouldn't connect it to these outlets. Although it may work on some appliances, it will definitely not be the case for all of your equipment.



-- 
Bye, Levas
--
http://www.vabolis.lt - elektronika ir siaip
"Gintas" <netikras@adresas.lt> wrote in message news:hdm48t$n8v$1@trimpas.omnitel.net...
> Carver stiprintuvas AV806x (ner labai senas, THX, 6 kanalai)-stovi du trafai, maitinimas nestabilizuotas, salia trafu-istrasuotos ploksteles su tvarkingomis nuorodomis, kaip perjungti i 220V ir i 230V . Trafas siltas ir prie minimalaus garso-bet kitiems gamintojams tai normalu. Gal ivertintas tas perejimas prie kito daznio? Ar imanoma dar kokia priezastis daryt ta istrasavima ir atsakas reikalingas-jeigu ne modifikavimui darbui Europoje?
> 
> "Levas" <blas@sss.com> wrote in message news:hdk2rj$6ad$1@trimpas.omnitel.net...
>> 
>>> 50->60 zymiai lengviau, nei 60->40 :). O esminis zodis tavo sakinyje tikriausiai "gamindavo". Amerikonai- "tebegamina" :)
>> 60->50 ... aklas spausdinimas pavede.
>>