Amazing performance! – 3W InfraRed LED 850nm IR Emitter on 2cm Star (1.5V~1.7V DC) Reviews
posted by Magicflame on 10/05/2011
Involvement:General (knows how to use it) - Ownership:1 day to 1 week
The performance from this LED is amazing! I wired this to a 2 volt sealed lead acid battery as suggested by dav850, but lost my nerve, as the battery was brand new and reading about 2.36 volt open-circuit, so I opted to limit the current with 5 x 5 Ohm resistors in parallel (they were only 1 watt each). The output was stupendous and more than able to light up an entire room. Even just bouncing the light off a white ceiling bathes the entire room in more than enough light to capture good video (will try to upload some pics or vids soon). Later I got braver and stuck a huge heatsink on and got rid of the resistors. This was when the fun really started! More than three times brighter than before. It has now been running at over 4 watt for hours!
None so far, but we'll see, I guess. Would require a very powerful driver to get the same performance from mains power, due to low voltage.
A bank of these used as the light source for a night-vision setup would be awsome, especially if you could find a way to focus the light a bit for distance.
Note:Stock and Availability shown on this site is for your reference only. While
we strive to provide the most accurate and timely stock and availability information,
availability information may become out of date and may change between the time
you added an item to cart and the time your order is received.
Quantities on clearance items are limited. Prices are current at time of posting. DX Reserves the right to change prices at any time without notice.