发明名称 |
Microamp measurement for two-terminal digital meter |
摘要 |
A two-terminal multimeter capable of both volt/ohm and current measurement employs an input protection circuit with a positive temperature coefficient impedance and a reference impedance, across which an A-D converter takes measurements. A current measurement signal activates a switch to ground one side of the reference impedance for taking current measurements. A controllable clamping switch grounds the positive temperature coefficient impedance in an input overload situation to provide input protection against damage to the meter components.
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申请公布号 |
US6466003(B1) |
申请公布日期 |
2002.10.15 |
申请号 |
US19980107332 |
申请日期 |
1998.06.30 |
申请人 |
FLUKE CORPORATION |
发明人 |
GALLAVAN MICHAEL F.;RASNAKE WILLIAM F. |
分类号 |
G01R15/12;G01R19/00;(IPC1-7):G01R19/00 |
主分类号 |
G01R15/12 |
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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