App description

Input parameters

Power supply voltage; LED forward voltage; LED rated current

Output parameters

Series resistance; next 5% standard series resistance value; color ring resistance color; LED power consumption; resistance power consumption

Usage example

Input data:

Power supply voltage = 12V, LED forward voltage = 3V, LED rated current = 20mA

Output results:

Series resistance value = 450 ohms; next 5% standard series resistance value = 470 ohms; color ring resistance color: yellow purple brown gold 5%; LED power consumption = 57 mW; resistance power consumption = 172 mW

Note

Power supply voltage: setting range is 3V to 12V

LED forward voltage: Input range is 2V to 4V

LED rated current: Input range is 10mA to 50mA