发明名称 |
AC/DC CONVERTER |
摘要 |
AC/DC transformer for tapping power from an electric current loop (1) for current supply to a functional unit (2), whereby the current loop (1) conducts an alternating current preferrably having a constant frequency and amplitude for the current supply. The converter has an inductive coupling (4) to the current loop (1) and the latter constitutes a primary winding in the inductive coupling (4). At the secondary side there are provided rectifier means (LR) for DC supply to the functional unit (2), a voltage regulator (SR) for controlling an electronic switch (S), a power coil (L1) and at least one capacitor. The power coil (L1) is located at the AC side of the rectifier means (LR) and a capacitor (C1) is provided in series with the power coil (L1) and together with the latter is adapted to have resonance at a frequency coinciding substantially with the frequency of the current supply. When there is no load on the converter, the switch (S) is substantially closed and in this condition short-circuits the alternating voltage at the secondary side of the inductive coupling.
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申请公布号 |
WO9624191(A1) |
申请公布日期 |
1996.08.08 |
申请号 |
WO1996NO00017 |
申请日期 |
1996.01.29 |
申请人 |
FIELDBUS INTERNATIONAL A/S;RAAD, BJOERN;EIDE, ARNE;LANDET, HALVOR |
发明人 |
RAAD, BJOERN;EIDE, ARNE;LANDET, HALVOR |
分类号 |
H02M7/21;H02M3/156;H02M7/217;(IPC1-7):H02M7/06 |
主分类号 |
H02M7/21 |
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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