美隆電子有限公司

Mayloon Electronic Company Limited

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Change of CRA064R000JF

E-mail 列印

PNC

Date:01-July-2013

PCN-FTER00075G

Subject: Change of PRODUCT NUMBER

Dear Sir/Madam,

We thank you very much for your continuous business relationship regarding all Mayloon products.

This latter is to advise you that the part number “CRA064R000J” have been discontinued,

We provides a new product with better features to replace the CR064R000JF customers can use improved replacement products, part number below:

No longer available: CRA064R000J

Possible alternative: CR064R000JF

Reason for change: Improve quality of the product

Date of Issue:12-December-2015

PCN Effective Date:12-December-2015

Last Time Buy Date: N/A

Last Time Ship Date: N/A

Product Name

New Product number

Chip Resistor Array

CRA064R000JF

CR064R000JF

We appreciate your cooperation and understanding.

Sincerely Yours,

Peter Tsang

Management

最近更新在 週二, 02 七月 2019 08:20  
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蝙蝠能夠避免碰撞,是藉一種天然雷達,不過是聲波代替電磁波,在原理方面完全相仿。從蝙蝠口中發出一種頻率極高的聲波,超過人類聽覺範圍以外,二位科學家藉著一種特製的電力設備,在蝙蝠飛行時,將它所發的高頻率聲波記錄出來。這種聲波碰到牆上,必然折回,它的耳膜就能分辨障礙物的距離遠近,而向適宜方向飛去。

微波是波長很短的無線電波,微波的方向性很好,速度等於光速。微波遇到任何物體都會立即被反射回來,再被雷達測速計接收。這樣一來一回,不過幾十萬分之一秒的時間,測試儀器就會顯示出所物體的距離或測出物體移動的情況。雷達或微波乃是類似廣播傳送器所發出的電波,也如蝙蝠口中發出一種頻率極高的聲波一樣, 只不過頻率較高出許多。我們把微波技術應用在家居燈具時,當人物或物體在微波的感應範圍內移動時,便會啟動感應器亮燈,物體静止或離開了感應範時就會熄燈

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