久芯网

LED限流电阻计算

LED(发光二极管)限流电阻计算是指确定连接到LED的限流电阻的数值,以确保LED以安全的电流运行,避免烧毁LED

Single LED circuit
Note: Different manufacturers, different color pressure drop is not the same.

Red:2.0-2.2v Yellow:1.8-2.0v

White:3.0-4v Blue:3.0-4v

Green:2.0-2.2v 3.0-3.2v The above is for reference only.

Voltage
  V
LED drop
  V
Required LED current
  mA



Calculating current limiting resistor
  Ω
Closest standard resistance
 
Calculate the resistance power
  W
Safe resistor power
  W
Single led with single resistor
LED series circuit
Several leds in series with one resistor
Voltage
  V
LED drop
  V
Required LED current
  mA
Number of connected LEDs
 



Calculating current limiting resistor
  Ω
Closest standard resistance
 
Calculate the resistance power
  W
Safe resistor power
  W
LED parallel circuit
Several leds connected parallel with one resistor
Voltage
  V
LED drop
  V
Required LED current
  mA
Number of connected LEDs
 



Calculating current limiting resistor
  Ω
Closest standard resistance
 
Calculate the resistance power
  W
Safe resistor power
  W
会员中心 微信客服
客服
回到顶部