[Coco] CoCo vs EMP WAS--> Re: Coco Digest, Vol 24, Issue 48

[johnadonaldson at comcast.net]

Even NASA is using COT's systems. Look at most of the laptops used
aborad the Shuttle and Alpha.

John Donaldson


-------------- Original message -------------- 

> james, 
> 
> Rad harden **might** still be a requirment for certain 
> devices/applications. I work for a defense contractor and we design 
> weapon system for the future. DOD has removed many of the requiremnts 
> for qualified parts. In the past we used ALOT of rescreened components. 
> Normal parts that are tested/screened and certified. Take a $0.25 part 
> and it becomes $125. Commercial/Industrial parts yields are so good 
> that the add cost couldn't be validated. Most of the common electrical 
> assemblies are call COTS(Consumer Off The Shelf) components. 
> 
> Control system is still our design. Electrical motor drives switching 
> 1000A RMS at 650v 3 phase bus voltages.......... :) 
> 
> Mark 
> 
> Quoting jdaggett at gate.net: 
> 
> > Rogelio 
> > 
> > There are chambers set up to test semiconductors for EMP. 
> > 
> > IN fact a lot of CMOS devices will qualify. If I recall CMOS is more 
> > immune than NMOS or PMOS to such events. Still the military in 
> > many key equiptment use what is called radiation harden 
> > semiconductors. One other method would be to enclose your Coco 
> > in a magnetic shielded box that would supply around 100 dB of 
> > isolation. 
> > 
> > james. 
> > 
> > On 13 Sep 2005 at 15:03, Rogelio Perea wrote: 
> > 
> > Date sent: Tue, 13 Sep 2005 15:03:47 -0400 
> > From: Rogelio Perea 
> > To: coco at maltedmedia.com 
> > Subject: [Coco] CoCo vs EMP WAS--> Re: Coco Digest, Vol 24, 
> > Issue 48 
> > Send reply to: CoCoList for Color Computer Enthusiasts 
> > 
> > 
> > 
> > 
> > > It'd be interesting to somehow rig an EMP test vault and check out 
> > the 
> > > CoCo capacity to withstand such an event... 
> > 
> > 
> > 
> > -- 
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> > Coco at maltedmedia.com 
> > http://five.pairlist.net/mailman/listinfo/coco 
> > 
> 
> 
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