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What does the network of 150pF/300 ohm defined in the IEC 61000-4-2 standard intend to simulate?

NoiseKen

The constants of 150pF/330 ohm is used to simulate the typical human discharge event.  The standard specifies 150pF as the typical human body capacitance and 330 ohm also as the typical human discharge resistance. 

Note that this value resembles to the value of a human body holding a metal object in hand.

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