发明名称 |
Automatic range finder for electric current testing |
摘要 |
In an electrical circuit for testing electrical current using a plurality of precision resistors connected in parallel or in series, a range finder for receiving the current to be measured with the voltage drop across the range finder being indicative of a current sub-range for measurement. In a preferred embodiment, a range finder has a first bipolar transistor and a second bipolar transistor connected in parallel and in opposite polarity with the emitter and base of each transistor connected together whereby each transistor functions as an emitter-base diode.
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申请公布号 |
US7098648(B2) |
申请公布日期 |
2006.08.29 |
申请号 |
US20040868520 |
申请日期 |
2004.06.14 |
申请人 |
QUALITAU, INC. |
发明人 |
KRIEGER GEDALIAHOO;CUEVAS PETER P.;BORTHWICK JAMES |
分类号 |
G01R1/00;G01R19/00;G01R19/165;G01R31/26 |
主分类号 |
G01R1/00 |
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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