http://www.refurbups.com-- APC's Smart-UPS line is one of many that does do a pure sine wave output.

In LLC Power Conversion Explained, Part 1: Introduction of this series, it was learned that the operation of the LLC requires the creation of a primary side sine wave current that is converter to a ...

With the increasing popularity of alternate power sources, such as solar and wind, the need for static inverters to convert dc energy stored in batteries to conventional ac form has increased ...

The electrical supply might be inconsistent in your area. But blackouts can’t keep you from going about your day and getting things done, can they? When the electricity goes out in your area, a pure ...