I was surfing through some of the worksheets here, and I have a question about the answer to Question 23 on http://www.allaboutcircuits.com/worksheets/igfet.html. The answer shows a diagram virtually identical to a circuit I'm designing right now, to use an IRF510 MOSFET to turn on a high-power (1 watt) LED. The answer says the diagram shown is not the most practical, and challenges the reader to improve on it. Since I'm not taking an electronics course at this time, could someone help me out and tell me how that circuit would be made more practical? For the record, in my application the MOSFET's gate is to be driven by an output pin of a Parallax BASIC Stamp, with the external pull-down resistor to insure that the MOSFET is turned off if the Stamp's pin is set to input mode and therefore would be floating otherwise.