美隆電子有限公司

Mayloon Electronic Co., Ltd.,

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Company Profile

E-mail 列印

Company Profile:

We Mayloon Electronic Company Limited has established since 1990, we are a registered Hong Kong companyWe are a leading manufacturer of Chip Diode, Resistor, Capacitor, NTC Sensor, Lighting Products, etc......

All had been approved with  RoHS  certificates.

We are professional and customers oriented, aiming to become the most professional supplier in our field and to obtain the support and trust from more customers.

To cater for the various needs of different customers in China and Hong Kong, we aim to expand our business continuously by providing quality products and professional service.

 

Company Name:

Mayloon Electronic Company Limited (1990)

Mayloon Lighting Company Limited (2006)

Country/Region :

Hong Kong

Establishment:

1990

Capital:

2,000,000.00(HKD)

Business:

Manufacturer, Supplier, Trader, Wholesaler and Distributor.

Contact Information:

Company Name:

Mayloon Electronic Company Limited 美隆電子有限公司

Mayloon Lighting Company Limited美隆照明有限公司

Location:

17E, Houston Industrial Bldg., 32-40 Wang Lung Street, Tsuen Wan, N.T.

Tel/Fax:

TEL +852-24089788; FAX +852-24069983

Email:

這個 E-mail 地址已經被防止灌水惡意程式保護,您需要啟用 Java Script 才能觀看

Website:

http://www.mayloon.com

Representative:

Lo Yin Yin

Brand Name:

SINLOON®

Trade Mark No.:

(9) 300541412 (HK)  (9) 6908857 (CN)

(11) 302892213 HK  (11) 14158386 (CN)

Bank Information:

A/C Name:

Mayloon Electronic Company Limited (美隆電子有限公司)

Bank Name:

Shanghai Commercial Bank Ltd. Texaco Road Branch

Swift Code:

SCBKHKHHXXX

A/C No. (USD)

34528-00012-1

A/C No. (HKD)

345-82-01782-5

A/C Name:

Mayloon Lighting Company Limited (美隆照明有限公司)

Bank Name:

Shanghai Commercial Bank Ltd. Texaco Road Branch

Swift Code:

A/C No. (USD)

A/C No. (HKD)

345-14-31168-9

 
歡迎您瀏覽本網站 WELCOME TO MAYLOON
Mayloon Electronic Company Limited Mayloon Lighting Company Limited

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Newsflash

LED 電阻推動

LED 驅動芯片 LED電阻推動

LED 電阻推動

要推動LED就要控制流過LED的電流,基本推動方法就是將LED跟電阻串聯,以電阻限制電流在一定的範圍內。這個方法好處是簡單、成本低,但缺點是不少能量在電阻轉化為熱能而浪費掉,而且LED的光度也隨著溫度、電壓、LED生產時的特性差異而有比較大的變化。

以電阻控制LED電流時,其電阻計算方法如下:Fig-1

由於LED與電阻串聯,流經電阻之電流=流經LED之電流,因此  Fig-2

而需電阻值為:Fig-3

當中:
I_R 為流經電阻的電流,
I_D 為流經LED的電流,
V_s 為電源電原,
V_f 為LED的順向偏壓。

當多於一枚LED時,最好使用串聯接法,這可使不同的LED都有相同的電流,總順向偏壓在串聯時就等於各LED順向偏壓的總和。LED順向偏壓的總和越接近電源電壓,電流就越不穩定。如果LED的數目多至其所需總順向偏壓接近或高於電源電壓,那就需用多個限流電阻分別對個別LED串作電流控制。

LED並聯非不可行,一般都盡量避免,因為生產過程做成的特性差異會使每枚LED的順向偏壓有輕微的分別,但並聯時各LED的順向偏壓一樣,流經各LED的電流就會有差異而導致光度、壽命不一致,所以需要把LED作特性配對才能保持光度接近,對零件供應、成本等造成壓力。