Uninterrupted power supply
US4876460A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1989 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Mar 27, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A continuous uninterrupted power supply (UPS) having microprocessor control DC circuitry is disclosed. The UPS comprises a regulator for converting an AC line signal to a regulated DC signal. The regulator may include an AC/DC converter connected to an AC input line for converting the AC input signal for generating a DC signal from an AC input signal. A filter circuit is provided within the regulator for filtering the converted DC signal. A backup DC source and a series diode are also provided within the regulator for connecting a backup source to the converted DC signal when the DC signal is less than a predetermined signal level. A DC/DC converter is provided within the regulator for controlling the converted DC signal level. A DC/AC converter is connected to the regulator for receiving the regulated DC signal and generating an output AC signal therefrom. A microprocessor controller regulates the operation of the DC/AC converter. The microprocessor controller is connected to the DC/AC converter by means of a plurality of control line pairs, each control line pair including an unfiltered control line and a return line disposed proximate thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.