Publication Date:
2019-06-28
Description:
A new circuit, when combined with melt-replenishment system and melt level sensor, offers continuous closed-loop automatic control of melt-level during web growth. Installed on silicon-web furnace, circuit controls melt-level to within 0.1 mm for as long as 8 hours. Circuit affords greater area growth rate and higher web quality, automatic melt-level control also allows semiautomatic growth of web over long periods which can greatly reduce costs.
Keywords:
FABRICATION TECHNOLOGY
Type:
NPO-15487
,
NASA Tech Briefs (ISSN 0145-319X); 6; 1; P. 94
Format:
text
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