CV background for welding
US6344628B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1999 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Sep 23, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/125
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
First and second CV power sources are connected in parallel. The first CV source provides an output sufficient for welding. The second CV source also has an output sufficient for welding, but at is at a voltage less than the voltage of the output of the first CV source and may also have a lower current output. Voltage from the first CV source is blocked from being applied to the second CV source, preferably by diodes or SCRs. The second CV source is a background source with a secondary and a rectifier, preferably a center tapped secondary with a full wave rectifier, and an inductor between the output. The first CV source is a welding source with a secondary and a rectifier, preferably a center tapped secondary with a full wave rectifier, and an inductor between the rectifier and the output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.