美隆電子有限公司

Mayloon Electronic Company Limited

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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

Mayloon on-line chat now

即時業務接洽
WhatsApp:91808452
QQ:1247069489
E-mail: peter@mayloon.com
TEL:852-2408 9788 M: 9180 8452

Newsflash

LED 驅動器概述

LED驅動芯片 LED驅動器概述

 

LED驅動器概述

目前發光二極管驅動芯片按類型可分為:恆壓式驅動芯片、恆流式驅動芯片以及脈衝式驅動芯片。其中恆壓式驅動芯片一般就是我們常見的DC/DC升壓芯片居多。這種方案的優點是芯片成本便宜沒有複雜的外圍電路。但只能恆定電壓驅動LED就會造成驅動輸出時電路電流的不可控。無法保證LED亮度的一致性。

恆流式驅動芯片則解決了之前恆壓式驅動的電流不可控問題。目前比較好的恆流芯片可以做到1%左右的恆流精度,而且有簡易的外圍控制接口可靈活設置所需輸出的電流大小所以倍受歡迎。但是這類芯片價格比恆壓芯片價格高許多且外圍電路複雜。同時因為恆定輸出電流所以整個芯片的在電池作為供電的時候放電會比較快。

目前脈衝式驅動芯片是以高頻率的脈衝發生器輸出接口向LED燈供電。因為是脈衝信號頻率很高所以人眼根本無法感覺出LED的頻閃,所以這個方式即符合了視覺需要又在一方面有效節約了電能輸出。而且這類型芯片的工作頻率一般可由外部接口控制。但是目前該類型芯片震盪頻率一般在100KHz~500KHz範圍。所以目前的驅動能力僅僅適合小功率應用。但是相信在不久的將來會提升到大功率LED驅動的場合。

 

  • 恆壓源電源在允許負載的情況下,輸出的電壓是恆定的,不會隨負載的變化而變化。
  • 恆流源電源在允許負載的情況下,輸出的電流是恆定的,不會隨負載的變化而變化。