Multimeter as Lightning Detector
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Published in issue 356, July 2006
Most digital multimeters have a sensitivity of 200 mV and in input impedance of 10 MOhm. With this information you can calculate that at full scale there will be a current of 20 nA (nano-ampères). In reality you have a very sensitive ammeter in your hand.
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Click below to download a pdf copy of this article from Elektor magazine.
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