How Good Is Faraday Tape?

[tdengineer]

Does anyone have experience with faraday tape and is it good enough to block the signals in this video down to under 20uv, or .02mv if all exposed metal with signals running through it are covered?

 

[jwin615]

You made an antenna...
(Real) Shielding tape works well if good contact is made with grounded metal, but it's a bandaid, not a solution. It's also pretty soft and prone to breaking or lifting if moved/bent.
You may want to look into isolated RFI filters for your I/O if you need that level of isolation.

 

[tdengineer]

You made an antenna...
(Real) Shielding tape works well if good contact is made with grounded metal, but it's a bandaid, not a solution. It's also pretty soft and prone to breaking or lifting if moved/bent.
You may want to look into isolated RFI filters for your I/O if you need that level of isolation.

Yea these eeg’s are a nightmare when it comes to emi. Thanks ill look into rfi

 

[jwin615]

Yea these eeg’s are a nightmare when it comes to emi. Thanks ill look into rfi

I use EMI and RFI interchangeably as they're pretty much the same problem for me(MRI service).
A lot of shielding required and I work with the MR research group at a large medical university in Nashville who's constantly building things to put in the room for functional studies.
If you're looking to shield an enclosure opening(like a lid), there's a shielding foam product that's relatively new. Last 10 years or so. It's an EVA style foam that has a conductive metal sleeve and conductive adhesive. You can get it in all sorts of sizes. It's a little easier to use in a prototyping stage than tapeing and retaping.
Don't use shielding paint. It's trash. You'll get some attenuation but not what you are looking for.

Not knowing what you're doing, I would think getting a shielded amplifier as close to the source, I'm guessing some touch device or other sensory input, would be advantageous. Get out of your own noise floor.