Timeline for How can I shield signal cables in an electrically noisy environment?
Current License: CC BY-SA 3.0
8 events
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| Oct 17, 2016 at 19:34 | vote | accept | andrewH | ||
| Oct 16, 2016 at 23:50 | comment | added | D.A.S. | Your "machine?" may already use something like this IC but not have the "Guard" pins to drive the coax. Active guard is a way of shielding using a buffered version of the signal itself without being unstable, But I suggest the "Right Leg drive" (traditional) or some stable skin contact for 0V electrode if no active probe reference exists. (active means driven by an Op Amp in this case). "passive" ground is just the common midpoint of 2 batteries. | |
| Oct 16, 2016 at 23:43 | comment | added | andrewH | @TonyStewart Wow, Tony, lots of great information here! It will take me a little while to digest all this. 3 quick questions, and my apologies if the answers are in what you have already given me -- I'm still trying to understand parts of it: 1. What is Active Guard shielding? Coax attached to the ANA? 2. Is the amplifier you provide specs of intended as a pre-amplifier leading into my machine, or as a replacement for some portion of the machine's own amplifier. 3. Re electrode impedance - I'm using skin abrasion, silver electrode, & conductive gel. Missing anything? | |
| Oct 15, 2016 at 17:16 | history | edited | D.A.S. | CC BY-SA 3.0 |
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| Oct 15, 2016 at 16:42 | history | edited | D.A.S. | CC BY-SA 3.0 |
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| Oct 15, 2016 at 15:17 | comment | added | Sredni Vashtar | Why 712 Vpp? Shouldn't that be 679 Vpp? | |
| Oct 15, 2016 at 14:02 | history | edited | D.A.S. | CC BY-SA 3.0 |
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| Oct 15, 2016 at 13:55 | history | answered | D.A.S. | CC BY-SA 3.0 |