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4. Re: DC power for SD 722

Subject: 4. Re: DC power for SD 722
From: "Rob Danielson" danielson_audio
Date: Sat Nov 21, 2009 12:31 pm ((PST))
Hi John--
Now you're "problem-solving" like Rich. ;-) Apparently, such
disconnects are very common in solar battery charging applications
and the $30 box is so perfect that even Rich gave up and bought one.
Let me know if you need his email address. Rob D.


At 5:08 PM +0000 11/21/09, hartogj wrote:
>
>
>Hi Rob,
>
>Maybe a simple low voltage cutoff switch could be made with a relay,
>resistor, and a momentary switch? I am not much of an electronics
>geek, or I would have figured this out a long time ago.
>
>John
>
>--- In
><naturerecordists%40yahoogroups.com>=
m,
>Rob Danielson <> wrote:
>>
>>  At 3:07 AM +0000 11/21/09, hartogj wrote:
>>  >
>>  >Wired either way, my 702 fails the switch-over almost every time.
>>  >
>>  >John Hartog
>>  >
>>
>>  Hi John--
>>  I'm not sure whether the exact, same 702 switch-over problem occurs
>>  with the 722, but Rich Peet has solved the switch-over/bounce back
>>  issue for the 722 using a Steca Solsum charge controller. Simple $30
>>  box I think. You can find Rich's email address in the archive. His
>>  discussion with SD tech is here:
>>
>><http://forums.sounddevices.com/showthread.php?t=3D1802>http://forums.sou=
nddevices.com/showthread.php?t=3D1802
>>(must be
>>  registered and logged in)
>>
>>  I've been using high-capacity batteries so I'm not sure whether my
>>  744T has developed this particular problem since the hardware upgrade
>>  or not. It never had the problem before the upgrade but I've had a
>>  couple of hangs that might have occurred at switch-over after the
>>  upgrade.
>>
>>  Maybe we can get Rich to draw-up a wiring plan and set-up
>>  instructions for the Steca to make available. I took another look at
>>  the SD forum tonight and didn't see updates after Rich's suggestions.
>>  Rob D.
>>  --
>>
>
>


--









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