Heating power supply apparatus for polycrystalline semiconductor rods
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United States of America Patent
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-
Dec 31, 1985
Grant Date -
N/A
app pub date -
Jul 15, 1983
filing date -
Jul 15, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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