[mythtv-users] external power supply rant (Was: Zotac ION M/B..)

David Brodbeck gull at gull.us
Wed May 13 19:12:39 UTC 2009

On Wed, May 13, 2009 11:32 am, Raymond Wagner wrote:
> The real problem of concern is that 'wall-warts' are cheaply built,
> typically linear, and always low efficiency.  They will be dumping
> easily twice the waste heat of a traditional computer power supply.

In the sizes we're talking about to power a whole computer -- i.e., >2
amps at 12 VDC -- I haven't seen a linear wall wart in a long time.  Even
the little cell phone charger wall warts are mostly switched-mode, now.

Linear power supplies for computers went out of style in the Commodore 64
days. ;)

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