How many volts is a white LED?

The typical forward voltage of a white LED is in the range of 3V to 5V. Since the best choice to power white LEDs is a constant current source and the input voltage range of a Li-Ion battery is below or equal to the LED forward voltage a new power supply solution is required.

What is a 2w LED equivalent to?

Compare wattage

Traditional bulb1 Halogen2 LED
25 watts 15 watts 2 watts
40 watts 25 watts 5 watts
60 watts 40 watts 7 watts
75 watts 45 watts 9 watts

What is the whitest LED color?

5500K = PURE WHITE As seen on the graph, 5500 kelvin is the purest WHITE color temperature available. There is no yellow or blue tint to the light output. It’s a very neutral tone that blends well with other colors.

How much current does a white LED draw?

The minimum current required by most white LED types at the above voltage is 10 mA, 20 mA being the optimal range, however these devices are able to operate even with 40 mA of current, producing dazzling brightness, almost at eye blinding levels.

What are white LEDs?

White LEDs and the illumination breakthrough :Ce (known as “YAG” or Ce:YAG phosphor) cerium-doped phosphor coating produces yellow light through fluorescence. The combination of that yellow with remaining blue light appears white to the eye. Using different phosphors produces green and red light through fluorescence.

What is the whitest LED bulb?

The three primary types of color temperature for light bulbs are: Soft White (2700K – 3000K), Bright White/Cool White (3500K – 4100K), and Daylight (5000K – 6500K). The higher the Degrees Kelvin, the whiter the color temperature.

Can you get a white LED?

With an ultraviolet or violet LED packaged inside a phosphor-coated enclosure, you can make a white LED. This is known as a full-conversion white LED.

Is cool white same as daylight?

Bulbs that provide light at around 4100K to 5000K are considered “cool white” and these start to have a slightly blue feel to them. Bulbs that provide light at around 6500K are considered “daylight bulbs” and these have a definite blue and cool sensation to them.