Posted for john.linst...@cdynamics.com









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Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780 (Voice)
619-505-1502 (Fax)
Military & Avionics EMC Services Is Our Specialty
Shake-Bake-Shock - Metrology - Reliability Analysis
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> -----Original Message-----
> From: Linstrom, John  (IndSys, GEFanuc, CDI)
> [SMTP:john.linst...@gefgreenville.ge.com]
> Sent: Wednesday, September 01, 1999 7:20 AM
> To:   'James, Chris'
> Cc:   'emc-p...@ieee.org'
> Subject:      RE: "hard anodized" process to insulate metal chassis parts
> 
> Maybe a slip of the fingers... We recently got bit on the fishpaper
> insulation. Fishpaper absorbs moisture; better to call it plastic, or
> mylar, etc. than to leave a possible suggestion that fishpaper is any good
> for this application.
> 
> John Linstrom 
> Computer Dynamics 
> PH 864.281.7768 x266 
> FX  864.675.0106 
> john.linst...@cdynamics.com 
> 
> 
> -----Original Message----- 
> From: James, Chris [ <mailto:c...@dolby.co.uk>] 
> Sent: Wednesday, September 01, 1999 3:16 AM 
> To: 
> Subject: RE: "hard anodized" process to insulate metal chassis parts 
> 
> 
> 
> Given that sulphuric hard III anodizing is only .001 to .003" thick then
> I'd 
> have thought not. It is also fairly easy to compromise, so in a mechanical
> 
> assembly you would be hard pressed to know how good the insulator was or
> how 
> long it would remain so after the rigours of use (vibration etc.). Better
> to 
> stick with SIL pad type materials or non-hydroscopic "Fish card" type 
> insulators. 
> 
> Chris James 
> 
> -----Original Message----- 
> From: Paul J Smith [ <mailto:paul_j_sm...@notes.teradyne.com>] 
> Sent: Tuesday, August 31, 1999 6:20 PM 
> To: emc-p...@ieee.org 
> Subject: "hard anodized" process to insulate metal chassis parts 
> 
> 
> 
> Good afternoon, 
> 
> Does anyone know of a process of "Hard Anodized"  metal chassis parts that
> 
> is 
> considered an acceptable insulator against hazardous voltages by any
> agency. 
> The 
> related spec describing this process is MIL- A-8625F. 
> 
> Please advise at your earliest convenience.   Thanks 
> 
> 
> Best Regards, 
>                     Paul J Smith 
>                Teradyne, Inc., Boston 
>                paul.j.sm...@teradyne.com 
>                Voice 617-422-2997 
>                FAX 603-843-7526 
> 
> 
> 
> 
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