An engineering tutorial designed to teach basic UPS (Uninterruptible Power Supplies) design and operation.

Tours and Cures of a Lightsoldier tells the true story of one person s incredible quest for self-discovery, and the answers to why we are here and what each of us could be doing with our lives. From an inquisitive childhood, full of promise and expectation we follow Alexander down a much murkier path to the all-consuming world of a modern-day cult, and the battle for identity and survival that ensues What emerges is an honest look and guide to all things of the mind, body and spirit, and an exposition of the thought processes and exercises that have been successful healing tools and those...

-The best and most thrilling book of exploration that we have ever read ... an] immensely important book.- -- New York Evening Post
-A series of excellent stories about one of the most interesting corners of the American world, told by a keen and sensitive person who knows how to write.- -- American Journal of Sociology
-It can be said of many travelers that they have traveled widely. Of Mr. Seabrook a much finer thing may be said -- he has traveled deeply.- -- The New York Times Book Review
This fascinating book, first published in 1929, offers firsthand...