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Sweep second hand quartz ?????

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dbssimon
資深會員

註冊時間: Oct 02, 2005
文章: 535

發表於: 星期三 2005-12-21 01:07

Dear bros,

i have seen in city chain today, a sweep hand quartz watch made by Citizen japan.

Anyone has more information about it? How can it be made?

goesby
資深會員

註冊時間: Aug 27, 2003
文章: 806
來自: TW

發表於: 星期三 2005-12-21 09:58

Sweep second is not the monoply for mechanical watch. Quartz movement also can do this. In oppositely, mechanical watch also can be made as jumping second (Rolex, Frank Muller..... have this product).
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dbssimon
資深會員

註冊時間: Oct 02, 2005
文章: 535

發表於: 星期三 2005-12-21 13:36

but it is rather uncommon for quartz watches.

onlyseiko
資深會員

註冊時間: Mar 22, 2005
文章: 1343
來自: Taipei

發表於: 星期三 2005-12-21 13:57

其實只要把石英震盪的分頻少分三或四次, 就能讓秒針順順地走了.
石英錶是靠石英震盪產生訊號, 此訊號穩定一秒幾千至幾萬次都有.
這些訊號被所謂的分頻器不斷以1/2除開,
除到最後一秒產生一個訊號改變軛片的磁極,
以推動在軛片內的所謂的二極轉子,
此轉子有南北二極,
軛片若每秒變一次極,
轉子就每秒轉一次.
若分頻只到1/4秒就改變軛片的極,
那轉子也就轉得快了.
一秒轉四次.
不知是否會影響其摩損.

有錯還請各位先進指教.