Multiple zone induction coil power control apparatus and method
US4506131A · kind A · utility
34Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1983 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Aug 29, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/104
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plurality of zones of an induction heating coil are individually controlled by varying the current through one or more zones of the coil to obtain a desired temperature profile in a workpiece. The current flow through a zone of the coil is determined by the conduction state of an associated saturable reactor, which is controlled in accordance with a preselected value or a variable value generated, for example, by a computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.