Today's Message Index:
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1. 03:45 AM - Lightweight rechargeable battery backup unit (BobD)
2. 06:14 AM - Re: Lightweight rechargeable battery backup unit (Kevin Challis)
3. 08:07 AM - Re: Lightweight rechargeable battery backup unit (BobD)
4. 05:48 PM - MG outrigger track width? (Pete)
Message 1
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| Subject: | Lightweight rechargeable battery backup unit |
Now that the LAA have approved the use of electronic ASI & Altimeter for backup
purposes as an alternative to steam driven instruments, I am considering installing
a combined unit in my aircraft as a backup to my Dynon Skyview.
http://www.lightaircraftassociation.co.uk/engineering/TechnicalLeaflets/Mods%20and%20Repairs/TL%203.20%20EFIS%20in%20LAA%20Aircraft.pdf
The pre-approved one I prefer (on clarity and cost grounds) from the LAA document
is the MGL ASX-1. However, it has one major drawback in that it does not have
a built in battery backup.
Having spoken to a distributor, he suggested a 9V PP3 battery (possibly switchable
in the circuit) would be sufficient for emergency power if the main circuit
failed. However, I would prefer a re-chargeable battery, re-charged through
the aircraft system, so as not to have to worry or check that the backup battery
is maintained in a charged state. Despite trawling the web, and there being
several commercial units and amateur wiring diagrams out there, I have found
none that are specific for incorporating in an aircraft.
I am reasonably competent with a soldering iron, but less so in the theory of such
things, so would be happy to construct my own on a PCB, from a detailed wiring
diagram. Does anyone know of such a diagram, or a suitable lightweight and
cost effective commercial device suitable for installation behind the Control
Panel?
I have copied this post to the AeroElectric List.
--------
Bob Dawson
XS TG || 912 ULS || G-NHRJ
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=467483#467483
Message 2
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| Subject: | Re: Lightweight rechargeable battery backup unit |
http://www.mini-box.com/picoUPS-120-12V-DC-micro-UPS-battery-backup
This board coupled to a sealed a very small 12vdc battery and the aircraft e
lectrical system will give you a backup 12vdc that is charged from the aircr
aft but switches over in the event of power loss so quickly the instrument c
ontinues to work.
Kevin Challis
G ODJG
> On 21 Mar 2017, at 11:44, BobD <rjd@bobdawson.plus.com> wrote:
>
>
> Now that the LAA have approved the use of electronic ASI & Altimeter for b
ackup purposes as an alternative to steam driven instruments, I am consideri
ng installing a combined unit in my aircraft as a backup to my Dynon Skyview
.
>
> http://www.lightaircraftassociation.co.uk/engineering/TechnicalLeaflets/Mo
ds%20and%20Repairs/TL%203.20%20EFIS%20in%20LAA%20Aircraft.pdf
>
> The pre-approved one I prefer (on clarity and cost grounds) from the LAA d
ocument is the MGL ASX-1. However, it has one major drawback in that it does
not have a built in battery backup.
>
> Having spoken to a distributor, he suggested a 9V PP3 battery (possibly sw
itchable in the circuit) would be sufficient for emergency power if the main
circuit failed. However, I would prefer a re-chargeable battery, re-charged
through the aircraft system, so as not to have to worry or check that the b
ackup battery is maintained in a charged state. Despite trawling the web, an
d there being several commercial units and amateur wiring diagrams out there
, I have found none that are specific for incorporating in an aircraft.
>
> I am reasonably competent with a soldering iron, but less so in the theory
of such things, so would be happy to construct my own on a PCB, from a deta
iled wiring diagram. Does anyone know of such a diagram, or a suitable light
weight and cost effective commercial device suitable for installation behind
the Control Panel?
>
> I have copied this post to the AeroElectric List.
>
> --------
> Bob Dawson
> XS TG || 912 ULS || G-NHRJ
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=467483#467483
>
>
>
>
>
>
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Message 3
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| Subject: | Re: Lightweight rechargeable battery backup unit |
Hi Kevin,
Thanks for your reply. I did actually come across this unit in my web search, but
as it says it is for cars, I am not knowledgeable enough to know if it is also
suitable for aviation. It's also from the USA, and I would prefer a UK (or
UK distributed) solution if possible.
It is along the lines of the sort of thing I am looking for, it should be fairly
easy to find an enclosure to house the PCB and battery.
--------
Bob Dawson
XS TG || 912 ULS || G-NHRJ
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=467492#467492
Message 4
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| Subject: | MG outrigger track width? |
Just curious if it will fit on my ramp :-)
Cheers and thx,
Pete
a239
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