发明名称 |
Testing device |
摘要 |
A testing device for establishing the presence of high voltage at a component (1) which carries high voltage is provided with a coupling part (2) which has a coupling electrode (2.1) coupled capacitively to the component (1). The coupling electrode (2.1) delivers a measurement current which is evaluated by a signal-processing circuit (5). As long as the measurement current exceeds a maximum current value for display, the signal-processing circuit (5) generates a display signal as an indication of the presence of high voltage. In this case, the signal-processing circuit (5) is permanently connected to the coupling electrode (2). In order to test that the coupling circuit is capable of functioning properly, a testing circuit (7) is connected in parallel to the input (8) of the signal-processing circuit (5). If the display goes out, a fault in the coupling part (2) can be deduced. <IMAGE>
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申请公布号 |
DE4318288(A1) |
申请公布日期 |
1994.12.08 |
申请号 |
DE19934318288 |
申请日期 |
1993.06.02 |
申请人 |
AEG SACHSENWERK GMBH, 93055 REGENSBURG, DE |
发明人 |
KARSTENS, MICHAEL, 8440 STRAUBING, DE |
分类号 |
G01R15/16;G01R19/155;H02B3/00;(IPC1-7):G01R31/00;G01R15/02 |
主分类号 |
G01R15/16 |
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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