LED series resistor
Current-limiting resistance and dissipation for an LED string.
Number of Inputs and Type
Persian and English numerals are accepted. Calculations run on your device; inputs are not transmitted or stored.
Result
- Calculated resistance
- 300 Ω
- Resistor dissipation
- 0.12 W
Displayed power is calculated dissipation, not the recommended component rating. Allow for thermal margin and voltage tolerance.
روش Calculation and راهنما
R=(Vs−nVf)/I; PR=I²R
Displayed power is calculated dissipation, not the recommended component rating. Allow for thermal margin and voltage tolerance.
ورودیهای مثال را تغییر دهید and واحد هر فیلد را کنترل کنید. Input نامعتبر بهجای یک units ظاهراً صحیح, پیام خطا View میدهد. for تصمیم نهایی, دیتاشیت and Standard Project ملاک است.