[Elecraft] [K2] : Laptop UPS

Stewart Baker stewart at baker.nildram.co.uk
Mon Mar 17 03:18:20 EST 2008


OK, maybe the bet was a bit one sided, as most SM PSU's are made 
in China and THEY produce EMI not the analogue ones.

How can the purchaser be responsible? They don't design and 
manufacture the item !

EMC rules on these PSU's are very clear. If however, the 
manufacturer chooses to omit vital EMI suppression components 
because of commercial imperative, then they are breaking the law. 
Quality control does not enter into the equation, neither does 
marketing.

The government organisations, who originally demanded that test 
methods and limits were put in place as part of the overall CE 
scheme, and now do nothing to enforce the law are equally to 
blame. 

Stewart G3RXQ

 
On Sun, 16 Mar 2008 18:16:19 +0000, David Woolley (E.L) wrote:
> Stewart Baker wrote:
>> By any chance was the UPS manufactured in China ?
>>
> That's not a very fair bet; almost every bit of consumer 
electronics is
> manufactured in China or has most of its components manufactured 
there.
>
> However, if the suggestion is the responsibility for poor EMC 
lies in
> China, that's not true.  A lot of the responsibility comes down 
to the
> purchasers, who want minimum prices and do not care about 
features that
> only benefit non-purchasers.  Beyond that are the marketing
> organisations that wouldn't know what EMC measurements actually 
mean,
> and the corporate management that only knows how to manipulate 
the stock
> market.
>
> If you buy something from a UK/US marketing organisation, and it 
is of
> poor quality, they cannot "blame their tools", by saying it was 
the
> suppliers fault; they should have chosen better suppliers, or 
paid
> people with appropriate technical knowledge, to do quality 
control.
>
> Governments also have a responsibility.




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