发明名称 |
Plasma pilot arc control |
摘要 |
A method and apparatus for controlling and maintaining a continuous flow of pilot arc current in a plasma cutting torch includes a pilot circuit, a current sensing circuit, and a control circuit. The control circuit maintains a continuous flow of pilot current through the pilot circuit both before and after a cutting arc has been generated. The control circuit further controls the magnitude of the pilot current in response to the sensing circuit indicating the absence or presence of the cutting arc.
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申请公布号 |
US5866869(A) |
申请公布日期 |
1999.02.02 |
申请号 |
US19970804819 |
申请日期 |
1997.02.24 |
申请人 |
ILLINOIS TOOL WORKS INC. |
发明人 |
SCHNEIDER, JOSEPH;LI, STEPHEN;REYNOLDS, JON |
分类号 |
B23K10/00;H05H1/36;(IPC1-7):B23K10/00 |
主分类号 |
B23K10/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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