The total power of a series of resistors is equal to the sum of the power dissipated by individual resistors. In this case, each resistor consumes 4.5v*.04amps which is equivalent to 1.08 watts. Since there are 6 resistors, 6.48 watts of power are consumed.
If your compairing apples to apples like 3 watt leds to 3w leds then 128. The more leds the higher the power.
There are 16 LEDs in the headset
LEDs are more energy-efficient than fluorescent lamps, consuming significantly less power while providing the same or better illumination. LEDs also have a longer lifespan, which contributes to further energy savings over time. Additionally, LEDs do not contain hazardous materials like mercury, which is found in fluorescent lamps and requires special disposal methods.
To find the total voltage needed for the LEDs, first calculate the total power by multiplying the number of LEDs by their power consumption: 12 LEDs * 3W = 36W. Then, divide the total power by the total current to find the voltage: 36W / 0.7A = 51.43V. Therefore, you would need approximately 51.43 volts for the 12 LEDs.
LEDs come for different power ratings. Miniature LEDs use between approximately 40-90 mW. High-power LEDs - used for illumination - can use hundreds of watts per square centimeter.
A: regular LEDS have along lead and a short lead the longer is usually positive. This lead must go to a positive potential. the shorter lead is less negative which must connect to next led positive and so on as a string.
Yes, LEDs are dimmable.
Basically, when LEDs are connected in parallel, the LEDs with the lowest resistance will be the brightest, the other LEDs will be dimly lit or not lit at all. Therefore, use LEDs with the same model number and colour.
A and B
Switching to LED lighting can save 40 to 70 per cent of electricity and these lighting can be used successfully in parking lots, common areas of apartment and even in your apartment. A building's carbon footprint from lighting can be reduced by 60 to 70 per cent by exchanging all incandescent bulbs for new LED. http://www.reddit.com/r/reddit.com/comments/asse9/led_lights_to_save_electricity_for_your_apartment/
Smaller Longer Lifespan/More reliable Less power used
About 80 lumens per watt of electric power is normal for LEDs.