陶瓷振盪器2m深水埔可買到?

本帖最後由 faifaifai5577 於 2015-3-30 11:38 編輯

二腳振盪器2m,本地可找到嗎
陶瓷振盪三腳和二腳有甚麼分別
請指點謝謝
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回覆 1# faifaifai5577
兩腳與三腳陶瓷諧振器分別
引用:
When using a ceramic resonator, the same rules for crystals apply. Ceramic resonators are often used as they are lower in cost and less prone to vibration damage. However, as mentioned earlier, they tend to require more drive level.
Resonators with a frequency greater than 3 to 4 MHz can be difficult to drive, due to limitations in the available drive level. As a general rule, avoid resonators with built-in capacitors. Using built-in capacitors will prevent you from being able to make changes easily during the qualification process. Plus, many resonators use capacitors that are too large for the drive level supplied by the microcontroller.

3 pin ceramic resonator 是內包含電容零件

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華辉可找到!
或换2脚到Crystal也可。

你這個應用好似冇匹配電容。

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本帖最後由 faifaifai5577 於 2015-3-30 14:07 編輯

回覆 3# stky306
請問華輝有二腳陶瓷晶振2m嗎

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回覆 4# faifaifai5577

華輝多数会有,很普通料。

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回覆 5# stky306

或者和興都可能有!!

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圁中是個遙控器,因壞了,試下更換晶振得唔得
請問圖中個陶瓷晶振二腳是用2Mhz頻率嗎,在華輝找不到
在淘寶又找不到2M頻率

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回覆 7# faifaifai5577

這類陶振損壞的機會好微,有試過用數碼相機或電話查看遙控(假使係紅外線式)有發射輸出嗎?如IR LED在按鈕觸動時有發光,則此陶振應沒損壞。最好唔好先假設係佢壞,要同時check下其他零件同線路(銅皮走線、開關、電源等)。
以下有淘記2M陶振網址,以後最好查清楚d先問
http://item.taobao.com/item.htm? ... ;abbucket=10#detail

http://item.taobao.com/item.htm? ... =1&abbucket=10#

http://item.taobao.com/item.htm? ... ;abbucket=10#detail

http://item.taobao.com/item.htm? ... ;abbucket=10#detail

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回覆 8# diputs

你可以去旺角麦士找找!!

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you need to check c1 and c2 loading cap value.
It must be the same.
you are now using murata  2MHz CSA2.00MG resonator with 2 pins
normal value is 30 pf each

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