High frequency self-oscillating welding apparatus
US4520255A · kind A · utility
17Cited by
16References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Jun 21, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
High frequency welding apparatus which includes a transformer and four transistor switches. The switches and the primary winding of the transformer are connected in a self oscillating or free running bridge configuration the operation of which is load dependent. Component damage due to overload conditions is thereby prevented and the voltage rating of the components may be equal to the voltage supplied to the bridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.