[Nailimixam]

google 唔到。。。

[Douglaschow]

48V DC

100AV

[Nailimixam]

ya,100V AC is US and 48V DC is Europe....i find that too

but HK?

[Douglaschow]

e個問題咁簡单!你都要問?抵打!

[怪俠]

他他佢

[kingkonghk]

香港照計跟米字奇國

[Douglaschow]

e家係世界標準! 英國標準. 100v Ac Ringer, 48DC 係on hook 世界標準!

[習總]

Volt 冇 變

只 係 插 頭 型 狀 變 左

[習總]

HK 人 用 米 國 modem 都 用 左 19 幾 年

如 果 volt 5 1 樣

1 早 簫 Q 晒 啦

[Douglaschow]

http://www.tech-faq.com/telephone-voltage.html

[Douglaschow]

www.epanorama.net/circuits/telephone_ringer.html义

[Douglaschow]

www.epanorama.net/circuits/telephone_ringer.html

[Nailimixam]

That make it so complicated so as to prevent ppl steal electricity from the telephone line?

[Nailimixam]

and thanks, Douglaschow :)

[Douglaschow]

steal electricity from the telephone line?

好細的電流ok架! 你想點steal?要借用幾多mA?