(...) Use an LM317T adjustable voltage regulator and 2 resistors. If you can't find a data sheet on it on the net somewhere, someone should be able to give you the formulas for figuring out the resistors. Find national semiconductor on the net and (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
(...) Look in an older edition of The Art of Electronics by Horowitz and Hill. They use the LM317 as an example voltage regulator, explain the resistor values, and provide a data sheet in the appendix. This is a very useful reference book for all (...) (26 years ago, 27-Jan-99, to lugnet.robotics.handyboard)