[mythtv-users] Desk Top Power

[Daryl McDonald]

On May 16, 2015 10:18 AM, "Mike Perkins" <mikep at randomtraveller.org.uk>
wrote:
>
> On 16/05/15 14:21, Daryl McDonald wrote:
>>
>> On May 15, 2015 11:20 PM, "Gary Buhrmaster" <gary.buhrmaster at gmail.com>
>> wrote:
>>>
>>>
>>> On Fri, May 15, 2015 at 8:18 PM, Eric Sharkey <eric at lisaneric.org>
wrote:
>>>>
>>>> On Fri, May 15, 2015 at 4:08 PM, Gordon McCrae <gordon.mccrae at gmail.com
>
>>
>> wrote:
>>>>>
>>>>> Perhaps I'm missing something here, but why not just spend £10 on an
>>
>> "Energy
>>>>>
>>>>> Saving Master Slave Extension Lead".
>>>>
>>>>
>>>> I think that's covered by Daryl's previous response:
>>>>
>>>>    A quick look and apparently its not available on this side of the
>>
>> puddle :-/
>>>>
>>>>
>>>> I took a quick look as well.  None of the units I could find were for
>>>> North American power.  All the hits seem to be for use in the UK.
>>>
>>>
>>> I think on this side of the pond, the magic words are
>>> "autoswitching" and "outlet", although some hits
>>> were clearly not what you might be interested in,
>>> some appear to be.
>>
>>
>> Wow, the enormity of knowledge on this list never ceases to amaze me,
many
>> thanks to all contributors.
>>
>> My STB is 12 VDC wallwart supply and the switch and HDHR are both 5VDC
>> wallwart supply, my initial thoughts were snip and wirenut connections
with
>> cords from retired units. my hesitancy comes from warnings that "flaky"
>> power could damage the HDHR and I assume other components as well.
>>
>> The relay idea interests me IIUC the power of the PC holds the relay in
the
>> closed position feeding a power bar with my wallwarts plugged in, and
opens
>> when the PC shuts down?
>>
> A "retired PSU" on its own may not do what you wish, since most are
designed to work correctly under a certain minimum load.
>
> I had a board that I wished to use diskless - PXE booting - but some
fairly standard PSUs in that box wouldn't even give me a BIOS page. Turns
out they needed a hard disk as a load to get the +5v working correctly.
>
> These days hard disks use so much less power that I think PSU designers
have to take that into account, but older supplies may still surprise you.
>
> --
>
> Mike Perkins
>
>
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Sorry for the confusion Mike, my bad, the "retired units" I was referring
to were wallwarts using the cord with the right jack for the switch HDHR or
STB, not PSU's. The PSU I'm considering using is the one in my BE/FE.
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