KEGAO 3*1W 320mA 0.5V~10V Constant Current LED Driver/Power Supply (110V~240V AC)

Pros: Great little constant power sources. Its tiny and has almost no heat dissipation.

Cons: Only 3 x 1 watt. 500 character limit.500 character limit.500 character limit.500 character limit.500 character limit.500 character limit.500 character limit.500 character limit.500 character limit.

Other: A tiny device that allows you to drive 2 to 3 1 or 3 watt led emitters. Works great, low price, a pity there is no 3 x 3 watt version..

Pros: This LED power supply is very small, is CE marked and tested, and seems of good build quality. I use it to drive 3 RGB LEDs in series (sku.4530), green directly connected, blue with 8.2 ohm in series and red with 3.9 ohm in series for each LED. This gives a nice warm white. I use thin white plastic (carrier bag) close to the led to mix the colors.

Cons: Works with 2 or 3 LEDs. With one, it just blinks. I didn't try more than 3.

Other: Buy this if you want to make a mains powered safe LED lamp.

Pros: Excellent price, very small size and build quality looks good.
Drive 3 x 1watt LED's in a series exactly.

Cons: A small, but noticeable millisecond delay when powered up until the time the LED's light up.
Wish it could drive more LED's, but it is what it is.

Other: This is great for small projects, though if building a multiple LED project with more than 3 LED's, better order more!
This little LED driver is a winner, allows you to build very bright LED lighting for your home at a low price.