For detailed step by step instructions with pictures on how to convert a regular halogen bulb to a LED lightÊyou can access the instructables website.
If your compairing apples to apples like 3 watt leds to 3w leds then 128. The more leds the higher the power.
Yes, LEDs are dimmable.
Plug into speaker jacks
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.
LEDs are used in traffic lights, on computer lights, car lights and indicators. You can also purchase LED flashlights and torches. Can be used in small devices for a variety of uses.
Use a heat sink. Many LEDs are heat sensitive. I make a heat sink by putting a rubber band round the handles of a small pair of snipe nosed pliers.
No.
red, green, yellow, blue leds
There is no such thing as a white LED. You produce white light from LEDs by combining red, green and blue LEDs. Red LEDs were produced first because red is a low frequency of light. It was the easiest to make. Green LEDs were produced next because green is a higher frequency of light. It was harder to make. By combining red and green LEDs, you can produce yellow light. Blue is a very high frequency of light and is very hard to produce. Blue LEDs and blue lasers (as in BluRay) took a great deal of effort to create. LED technology and some kinds of laser technology are very closely related.
Gallium nitride (GaN) LEDs are commonly used to create blue LEDs. By combining a blue LED with a yellow phosphor coating or a green and red LED, white light can be produced. Additionally, different additives can be incorporated to create other colors such as red, green, and yellow LEDs.
home depo, sears, wal*mart. If they are indeed LEDs (Light Emitting Diodes) then any radio shack (or similar) will carry them. Make sure they are LEDs and not just 12Vdc incandescent bulbs. They are probably integrated into a circuit board, but can be replaced by using a soldering iron.
Most modern torches have LEDs in them, several newer models of Audis do too.