发明名称 |
CLAMP MEASUREMENT APPARATUS FOR MEASURING WIDE BAND CURRENT |
摘要 |
PURPOSE: A clamp measurement apparatus for measuring a wide band current is provided, which measures a high frequency AC current of several MHz from a DC current without disconnecting a line to measure the current flowing in the line. CONSTITUTION: A key input part(20) establishes a measurement range, and a hall effect device(240) measures a DC current. A conjunction coil(242) wound with a fixed turns of coils(244) generates an electromotive force according to the variation of a magnetic field formed by a current flowing in a line. An amplification/attenuation part(26) controls the induced electromotive force according to the setting of the key input part. An A/D(Analog/Digital) converter part(27) converts the high frequency amplified/attenuated analog signal into a digital signal. A FIFO memory(28) stores the converted digital signal, and a display part(22) displays a calculated current effective value and a current waveform. And a micom control part(21) controls the display part, and calculates the effective value by calculating the digital signal stored in the FIFO memory.
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申请公布号 |
KR100285784(B1) |
申请公布日期 |
2001.01.06 |
申请号 |
KR19980016627 |
申请日期 |
1998.05.09 |
申请人 |
LEE, YOUNG NAM |
发明人 |
JANG, HYEONG SEO;LEE, YOUNG NAM;TAK, SEUNG HO |
分类号 |
G01R19/00;(IPC1-7):G01R19/00 |
主分类号 |
G01R19/00 |
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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