婷婷我也去俺也去狠狠爱,婷婷五月综合香蕉在线,婷婷五月色综合亚洲 丁香

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美隆電子有限公司

Mayloon Electronic Co., Ltd.,

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LED Filament Bulb

Lamp E27 Lamp E14 Lamp E14 Lamp E14 Lamp E27 Lamp E27 Lamp E27 Lamp E27 Lamp E27 LED Plug Lamp -

標題過濾     顯示數 
項目標題 作者 點擊
1 G23 LED 筷子燈 (橫插) Horizontal Plug Lamp 3609
2 LED Stick Lamp LED Stick Lamp 5846
3 LED Bulb E14-C35T 2W LED 燈絲球泡燈 4188
4 LED Lamp - G125-6W-E27 G125 6W E27 12382
5 LED Lamp - G95-6W-E27 G95 6W E27 11620
6 LED Lamp - G80-6W-E27 G80 6W E27 12161
7 LED Lamp - A60-5W-E27 A60 5W E27 11684
8 LED Lamp - G45-3W-E14 G45 3W E14 11657
9 LED Lamp - C35-2W-E14 C35 2W E14 12303
10 LED Lamp - A60-6W-E27 A60 6W E27 11996
11 LED Filament Bulbs - C35 LED 燈絲泡 C35 2W/4W 13826
12 LED Filament Bulbs - B35 LED 燈絲泡 B35 2W/4W 13580
13 LED Filament Bulbs - P45 LED 燈絲泡 P455 2W/4W 13101
14 LED Filament Bulbs - G45 LED 燈絲泡 G45 2W/4W 11718
15 LED Filament Bulbs - A60 LED 燈絲泡 A60 4W/6W/8W 12215
16 LED Filament Bulbs - ST58 LED 燈絲泡 ST58 4W/6W 11503
17 LED Filament Bulbs - ST64 LED 燈絲泡 ST64 4W/6W 11826
18 LED Filament Bulbs - ST58L LED 燈絲泡 ST58L 3W/5W 10994
19 LED Filament Bulbs - ST64L LED 燈絲泡 ST64L 3W/5W 11361
20 LED Filament Bulbs - G80 LED 燈絲泡 G80 4W/6W/8W 11577
 
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美隆照明有限公司
承接換燈照明工程:
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各類型照明燈具
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Newsflash

LED 極性

LED 驅動芯片 LED 極性

?

LED 極性

圖: LED 極性

由於LED工作於直流電,連接線路時必須確保極性方向正確才能正常工作。與二極管一樣,LED的接腳分正極(陽極、+)及負極(陰極、-),電流必需由正極流向負極,LED才能發光。

LED接腳的極性一般可以由其封裝上看出,但不同封裝其標示方式也不同。除封裝外,也有其他途徑得知LED的極性,以下列出常見的標示方法:

可以由以下方法找出:用萬用錶測試。模擬式萬用錶可以用電阻擋測試(注意模擬式萬用錶測試針的正負極是倒轉的的);數字式萬用錶大多有測試二極管的功能,但兩者能測的最高偏壓都有限制,模擬式萬用錶受內部電池所限,數字式萬用錶則因廠方設計而異。低壓恆流源也是理想的測試工具。例如用固定電壓電源串連一個電阻。

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婷婷我也去俺也去狠狠爱,婷婷五月综合香蕉在线,婷婷五月色综合亚洲 丁香