- #1

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I want to know at what frequency I should take the impedance from the impedance data (obtained using sinusoidal current) corresponding to the frequency of 20 Hz (monophasic pulse train)?

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- Thread starter tahsid
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- #1

- 6

- 0

I want to know at what frequency I should take the impedance from the impedance data (obtained using sinusoidal current) corresponding to the frequency of 20 Hz (monophasic pulse train)?

- #2

berkeman

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I want to know at what frequency I should take the impedance from the impedance data (obtained using sinusoidal current) corresponding to the frequency of 20 Hz (monophasic pulse train)?

Welcome to the PF.

First, is this electrode meant to be used in a human biomedical application? If so, are you designing your circuitry according to the UL 544 safety standard?

Can you please describe the application? What does the electrode get placed on? Depending on the surface, you may not be able to infer monophasic impedance from a balanced AC impedance sweep...

- #3

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I have done the impedance measurement of the electrode now I want to calculate how much voltage is required for stimulating this electrode using monophasic current. if the required voltage is too high than this electrode is not suitable.

- #4

berkeman

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I have done the impedance measurement of the electrode now I want to calculate how much voltage is required for stimulating this electrode using monophasic current. if the required voltage is too high than this electrode is not suitable.

For monophasic current, won't polarization at the interface modify the impedance? Why are you using monophasic stimulation? Is that standard for EMG applications (I don't know)?

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