Here is another electronic circuit of a driver for Led, this project is identical to the previously published, to Current Regulator for LED High Brightness 1 Watt tipo estrela ( Led Driver). He is part of a series of publications on Led Driver. This driver uses the famous voltage regulator LM317, which in this case is configured as a current regulator orCurrent limiter. This circuit can be easily constructed, low cost and ideal for those with no knowledge of electronics or getting in Hobby.