UPS Keeps Computers Humming (.PDF Download)

In the 1970s, a Popular Mechanics article described how to build your own UPS using a car battery charger, a car battery on a rubber drain board, and a 12-Volt inverter. The charger kept the battery charged as long as power was present, and the battery ran the inverter on its own charge for a while when the main power disappeared. It was an ungainly device and delivered brutal square-wave power that would be troublesome for a lot of today’s more delicate equipment. Still, it em

Register to view the full article

By registering on Machine Design now you’ll not only gain access to premium content, you’ll also become part of a robust engineering community – PLUS - you gain access to the 2016 Salary & Career Report results.
Joining the Machine Design community also allows you to:
Become a member of an exclusive group of Engineers
Share your insights by commenting on articles and blogs
Network with Engineers from around the globe and much more

Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish