Invention Grant
- Patent Title: Cold filament ignition system and method of silicon rods
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Application No.: US14452724Application Date: 2014-08-06
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Publication No.: US09771270B2Publication Date: 2017-09-26
- Inventor: Michael Harro Liese , Wilfried Vollmar , Casey Michael Wornath
- Applicant: GTAT Corporation
- Applicant Address: US NH Merrimack
- Assignee: GTAT Corporation
- Current Assignee: GTAT Corporation
- Current Assignee Address: US NH Merrimack
- Agency: Parker Ibrahim & Berg LLC
- Agent Stephen D. LeBarron
- Main IPC: C01B33/021
- IPC: C01B33/021 ; B01J19/08 ; C01B33/035 ; H05B1/02

Abstract:
A method and system of igniting one or more filaments for silicon production includes applying an output voltage to the one or more filaments using a transformer connected with the one or more filaments. In addition, the method includes supplying, in combination with the application of the output voltage, a current to a primary winding of the transformer via a choke to limit the current to a first predetermined current threshold range. The combination of the supplied current and applied output voltage allows a predetermined output range to be generated from a power supply device initially required to ignite the one or more filaments.
Public/Granted literature
- US20150044119A1 COLD FILAMENT IGNITION SYSTEM AND METHOD OF SILICON RODS Public/Granted day:2015-02-12
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