w_tom <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>...
> One function often missing is filtering so that AC noise
> does not adversely affect computer. Why install filtering
> when specification are not even provided that say filtering
> exists?
Specifications are always provided, but true specifications are
less common. Every ATX power supply spec sheet I've seen said
that the product had an AC noise filter and was protected against
excessive current and voltage, but some of the supplies would
jam AM radio reception (circuit board was empty where the filter
components would normally go) or be damaged by shorts. In fact,
all 5 power supplies damaged in tests by
www.tomshardware.com
and
www.silentpcreview.com were claimed by their manufacturers
to possess overload protection, and those products were much
more expensive than average.
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