发明名称 |
SVETSAPPARAT MED EN STROEMKAELLA INNEFATTANDE VAEXELRIKTARORGAN |
摘要 |
Welding apparatus and a method of producing source of welding current. Use is made of an inverter supplied with direct current from a source to pulse a center-tapped primary winding of a transformer at a frequency in excess of the audio range of frequencies, typically 10 KHz to 20 KHz. A secondary winding of the transformer has output terminals for electrical connection to an electrode and work to be welded. The operation of the inverter is controlled by means of a feedback signal derived from a winding inductively coupled to the transformer. The high operating frequency results in a significant reduction in the mass and dimensions of the welder compared to conventional welders which operate at mains frequencies. |
申请公布号 |
SE461137(B) |
申请公布日期 |
1990.01.15 |
申请号 |
SE19810007685 |
申请日期 |
1981.12.21 |
申请人 |
ANGLO AMERICAN CORORATION OF SOUTHAFRICA LTD |
发明人 |
G L * BREDENKAMP |
分类号 |
B23K9/10;H02M7/5383;(IPC1-7):23K9/10 |
主分类号 |
B23K9/10 |
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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