■買左個keyence電變

harry · 發表於 2008-9-6 21:43:05

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個keyence電變跟左幾粒電子零件
有一粒蕭基特二極體(schottky diode)同三粒電容
想問下E幾粒電子零件有嘜野用
如果唔焊,會唔會有問題呢?
上網查過蕭基特二極體係應用於高頻和高速切換中,
作高頻信號的整流作用,係唔係令D電行得順D??

令外想問下個電變接15T摩打玩3,4分鐘已經好熱,好熱...
今樣正唔正常??
之前接330電變個摩打玩好耐先熱
齒比應該冇問題,因為跟說明書
係21/84,但我換左20齒都係好熱,好熱...
使唔使換19齒試下呢?
THx~

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[ 本帖最後由 harry 於 2008-9-6 21:46 編輯 ]

ryancmlam · 發表於 2008-9-7 00:01:52

Schottky diode is used to provide a "free wheeling funciton", sometimes it is called "free wheeling diode". When there is no current to the machine (the motor), it is in free wheeling condition and become an generator. The direction of current flow remains unchange. The current will flow from motor -ve terminal or +ve terminal via the diode(i.e. motor +ve becomes -ve and vice versa). The "bar side" of the diode should be connected to motor +ve( red line).

P.S. don't connect the motor with schottky to an ESC with reverse mode and use the reverse mode.

harry · 發表於 2008-9-7 00:13:55

原帖由 ryancmlam 於 2008-9-7 00:01 發表

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Schottky diode is used to provide a "free wheeling funciton", sometimes it is called "free wheeling diode". When there is no current to the machine (the motor), it is in free wheeling condition and be ...

哇哇哇......
英文

重今多

可否翻譯下
thx thx~

[ 本帖最後由 harry 於 2008-9-7 00:16 編輯 ]

ryancmlam · 發表於 2008-9-7 00:14:52

原帖由 harry 於 2008-9-7 00:13 發表

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哇哇哇......
英文重今多 :Q

Sorry, I don't know how to type chinese

li5115 · 發表於 2008-9-7 02:21:14

原帖由 ryancmlam 於 2008-9-7 00:14 發表

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Sorry, I don't know how to type chinese

Ryan 兄，買塊手寫板啦！

ftbingobingo · 發表於 2008-9-7 03:46:44

簡單尼講, 係咪即係用尼消除back emf?

ryancmlam · 發表於 2008-9-7 08:37:11

原帖由 ftbingobingo 於 2008-9-7 03:46 發表

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簡單尼講, 係咪即係用尼消除back emf?

yes, bingo

harry · 發表於 2008-9-7 10:44:07

原帖由 ftbingobingo 於 2008-9-7 03:46 發表

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簡單尼講, 係咪即係用尼消除back emf?

嘜野係back emf??

lichungkiu · 發表於 2008-9-7 11:11:29

我知道唔焊支二極管殺車冇咁應同對個電變唔好

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