Freewheeling current conduction in welding power supply
US6504738B2 · kind B2 · utility
4Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2000 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/1623
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power circuit for a welding power supply includes a rectifier circuit and a control circuit. The rectifier circuit includes a plurality of switches (e.g., silicon-controlled rectifiers). The control circuit is configured to provide a first control signal to a first switch at a predetermined firing angle to provide welding power through the first switch. The control circuit is configured to provide a second control signal to a second switch to allow freewheeling current to flow through the second switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.