发明名称 |
STROMVERSORGUNGSVERFAHREN FÜR EINEN WIDERSTAND, SCHALTUNG DIESER WIRKUNG ZUM VORBRINGEN UND DIE SCHALTUNGSANWENDUNGEN. |
摘要 |
The invention relates to a system for processing an electrical power supply signal for a resistive heating element. The circuit provided comprises an a.c. current source, a rectifier and a chopper for supplying the resistive element with a current having two superimposed components one being d.c. and the other being a.c., both at a variable voltage. The invention applies particularly to the supplying, with a signal thus processed, of the resistive element of a connecting piece for electro-weldable plastic tubes, of an electro-heating envelope for the connection or protection of pipes, or of a heat-shrink sheath for operation on a cable having a conductor or conductors used for the carrying of electrical energy or for telecommunications. |
申请公布号 |
AT106316(T) |
申请公布日期 |
1994.06.15 |
申请号 |
AT19900403800T |
申请日期 |
1990.12.28 |
申请人 |
GAZ DE FRANCE (SERVICE NATIONAL);SOCIETE JOSEPH SAURON MATERIEL INDUSTRIEL |
发明人 |
MOREAU, CHRISTIAN;SAURON, JEAN |
分类号 |
B29C65/00;B29C65/34;B29C65/50;G05D23/275;H05B3/00;H05B3/40;H05B3/58 |
主分类号 |
B29C65/00 |
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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