I'm looking at beginning an LT circuit (I have read all the LT pages and downloaded the spreadsheet... and think I understand it) and have a few questions... 1) Has anyone found a good +/- 15 Volt power supply that is readly available in the US? 2) Those that have built/are building LT's, what suggestions do you have for someone just starting out? 3) More ?'s to come, I'm sure... Thanks.