Process for resistance welding arrangement for carrying out the process
US5489757A · kind A · utility
10Cited by
6References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1992 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Mar 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process and apparatus for resistance-welding produce a welding current which pulsates in periodic half-waves, in particular an alternating current. The, welding current is generated from a primary alternating voltage which is chopped n times (n>1) in each half-wave and pulse width modulated in order to regulate the welding current. A regulator is provided and has a storage device containing the current nominal values for each chopping interval, corresponding to the welding current form, for comparison with each actual current value determined in each chopping interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.