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I would like to use an oscilloscope to verify that voltage changes due to the body's...

I would like to use an oscilloscope to verify that voltage changes due to the body's resistance when pressed by hand by electric current on the saw blade. how should we do it.

Engineering   Electrical-Engineering   
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Answer #1

*** DEAR FRIEND PLEASE DO NOT TRY DOING THIS PRACTICALLY if something goes wrong it may kill you.

* Connect an oscilloscope input to a saw blade,scuff on some hard thing.

* Wave your hand near the saw blade and see how much the trace on the oscilloscope is deflected.

* Adjust the scopes vertical gain to give a large deflection during your hand waving (PLEASE note that you should not touch the saw blade when you are charged).

* Use a DC high voltage power supply with a large current limiting series resistance to charge your body to 5kv.

* Wave your charged hand near the saw blade and see how far the oscilloscope trace deflects.

* Adjust the high voltage until the deflection is about the same as when your body was charged by the rugscuffing.

Read the power supply voltage setting and you will know the approximate change in the body voltage due to body's resistance.

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