[sdiy] Shielding plastic cases

[Andre Majorel]

On 2007-10-17 20:58 -0400, juju selwyn wrote:

> Regarding plastic synth/drum machine cases, both manufactured and DIY,
> would there be much benefit to shielding the inside of the case with
> copper tape as is done with guitars, or even magnetic paint (probably
> requiring a plastic primer but it's still an option). I know people in
> the DIY stompbox world are keen on it.

You could try to use the naked PCB near a wall wart, mobile phone
or fluorescent tube. Then put it in a steel box. Does it make a
difference ?

One layer of aluminium foil with some adhesive copper tape along
the edges and across the middle was enough to prevent the ignition
from interfering with the car radio. Not totally effective, but
good enough to let us enjoy the programme. I'd say the attenuation
was on the order of 30 dB.

-- 
André Majorel <URL:http://www.teaser.fr/~amajorel/>
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