发明名称 |
Oikosulkuja rajoittava suoja |
摘要 |
A current limiting short-circuiting protector is disclosed which utilizes an electronic and thermal feedback principle for achieving precise and rapid release of the protector, which can be readily reset. The principle utilizes a non-linear powerful temperature-dependent resistor in the collector circuit of a field effect transistor which serves as a current valve and through which the total current to be monitored is passed. The circuit replaces a conventional fuse and may also function as a load on/off control means. When a fault occurs in the load, the erroneous current is limited to a much lower value than is the case with a conventional fuse. |
申请公布号 |
FI943395(A0) |
申请公布日期 |
1994.07.15 |
申请号 |
FI19940003395 |
申请日期 |
1994.07.15 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON |
发明人 |
EKELUND, FOLKE;HANSSON, LEIF |
分类号 |
H02H9/02;H02H3/02;H02H3/087;H02H5/04;H03K17/08;H03K17/082;H03K17/18;H03K17/795 |
主分类号 |
H02H9/02 |
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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