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如何使用万用表进行高级测量

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How to Make Advanced Measurements With a Multimeter, How to measure high current (amp scale): crwdns2935265:00crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 How to Make Advanced Measurements With a Multimeter, How to measure high current (amp scale): crwdns2935265:00crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
How to measure high current (amp scale)

  • Power down the circuit you're measuring.

  • Choose the point where you want to measure the current. You'll need to break the circuit at that point. This may mean snipping a wire, disconnecting a connector, or removing a jumper wire.

  • Connect the multimeter in-line with the circuit by touching the probes to the ends of the broken circuit. If possible, use alligator clips to hold the probes to the ends.

  • The polarity of the probes somewhat matters. The multimeter will measure current flowing into the red probe and out the black probe. If you reverse the probes, it will show a negative value on the multimeter, but it won't damage the meter.

  • Confirm that the probes are only touching what they should and nothing else.

  • Check to make sure the circuit isn't accidentally touching you or anything conductive that may short it.

  • Power on the circuit and make your measurement.

如何测量大电流（安培量程）

断开待测电路的电源

选择电流测量点，需在该点断开电路连接。可能需要采取剪断导线、断开连接器或移除跳线等操作

将万用表串联接入电路：用探头接触断开点两端。建议使用鳄鱼夹辅助固定探头

探头极性 需注意：万用表会测量从红表笔流入、黑表笔流出的电流。若反接表笔，读数将显示为负值，但不会损坏仪表

确保探头仅接触应测部位，未触碰其他任何物体

检查确认电路未意外触碰您或任何可能造成短路的导电物体

重新接通电路电源，进行测量读数

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