High frequency inverter circuit for melting and induction heating
US4638138A · kind A · utility
13Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Jul 23, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A two-pole inverter bridge has an inductor mounted between the two controlled switches in each pole and a resonant load is connected across the poles between ends of the inductors which are similarly situated relative to the terminals. In each pole one antiparallel circuit includes an auxiliary controlled switch and another antiparallel circuit includes only a diode. Fault protection is provided with an auxiliary source mounted between opposite ends of the inductors for applying reverse bias to the controlled switches of the poles whenever a fault in the inverter is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.