System and method for controlling the degree of heating experienced by a work coil in an induction heating generator
US5886325A · kind A · utility
5Cited by
15References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction heating generator is disclosed. The generator controls the power delivered to a work coil via a plurality of resistor/bias control switches coupled in parallel and a controller, thereby eliminating the expensive and difficult to troubleshoot SCR control circuits associated with prior art generators. By sequentially switching the bias control switches, the controller can progressively lower the input voltage to a controlled switch to thereby alter its conducting state to provide stepped power increases to the work coil. The work coil is de-energized by opening the bias control switches in reverse sequential order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.