If a power supply (laptop charger) delivers 18V / 4A (75W), will it be possible to regulate it down to 12V and drain 5A of current (60W)? -- - Rikard - http://bos.hack.org/cv/ -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist