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Cement Resistor Series 水泥電阻

Hone CM Cement Resistor - Series

FEATURE

  • Exceptionally small and sturdy, mechanically safe, Excellent electrical characteristic
  • The materials used and the construction techniques ensure excellent flame resistance, arc resistance and moisture resistance as well as self-extinguishing capabilities, They will withstand the most rigorous loading test.
  • As resistors in radio and television receiver, The hazardous conditions of smoking and reheat can be completely prevented by the proper choice of power resistors.
  • Tolerance of ±5% and ±10% are standard.
  • Non-inductive type are available on request.
  • Heat and flame resistance
  • For high resistance value, The winding core will be replaced by metal oxide film core (RS Type)
  • Applicable specifications: EIA RS-344 and EIA RC-649
  • Power Rated: 3W ~ 1KW

Cement Resistor SQH Type Cement Resistor SQH Type Cement Resistor SQH Type Cement Resistor SQH Type Cement Resistor SQH Type Cement Resistor SQM Type

Cement Resistor SQP Type Cement Resistor SQT Type Cement Resistor SQZ Type Cement Resistor SQH Type Cement Resistor SQM Type Cement Resistor SQP Type

Cement Resistor SQT Type Cement Resistor SQV Type Cement Resistor SQZ-YA Type Cement Resistor SQZ-YB Type Cement Resistor SQZ-YC Type Cement Resistor SQZ-YD Type

Cement Resistor SQZ-YD-I Type Cement Resistor SQZ-YE Type Cement Wire Wound  AH Type Cement MQ-MPR 大功率電力型繞線電阻 大功率電力型繞線電阻

大功率電力型繞線電阻 大功率電力型繞線電阻

 

水泥電阻

 
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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。