Heating power supply apparatus for polycrystalline semiconductor rods
US4562338A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1983 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Jul 15, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/0023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating power supply apparatus for polycrystalline semiconductor rods, including a power transformer and anti-parallel thyristor unit groups connected to respective portions of the secondary of the power transformer, balance transformer groups connected to the anti-parallel thyristor groups and combined to make constant a secondary current of each of the balance transformers, and semiconductor rod connecting terminals connected to the secondaries of the balance transformer groups, respectively. The balance transformer groups are divided into a group of plural balance transformers of small current and high voltage for exclusive use during the starting and a group of plural balance transformers for taking over operation from the group of balance transformers of small current and high voltage and continuing subsequent operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.