Welding system with electronic control
US4742208A · kind A · utility
17Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Oct 14, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53871
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A welding system with an electronic control includes four switching elements coupled together to form a bridge. An inductor with a center tap is located between two legs of the bridge. A load, including an output electrode and the metal parts being welded, is coupled between the center tap of the inductor and the other two branches of the bridge. Two of the switching elements are turned on and off at a relatively high rate to control the power to the load. The other two are turned on and off at a relatively low rate to control the duty cycle and polarity of the load voltage and current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.