Today's Message Index:
----------------------
1. 05:49 AM - Re: USB Power Socket (Ralph)
2. 06:31 AM - Re: Nav/position light specs (Eric M. Jones)
3. 06:43 AM - Re: Nav/position light specs (JOHN TIPTON)
4. 08:05 AM - Re: Nav/position light specs (R. curtis)
5. 08:25 AM - Re: USB power socket (LES KEARNEY)
6. 08:29 AM - Re: USB power socket (John Tipton)
7. 12:44 PM - Why multiple skinny power wires? (Paul Millner)
8. 01:59 PM - Re: Why multiple skinny power wires? (Tim Andres)
9. 02:55 PM - Re: Why multiple skinny power wires? (John Grosse)
10. 03:54 PM - Re: Why multiple skinny power wires? (Eric M. Jones)
11. 04:17 PM - Re: Re: USB Power Socket (Robert Borger)
12. 05:34 PM - Re: Re: USB Power Socket (fedico94@mchsi.com)
Message 1
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| Subject: | Re: USB Power Socket |
I used a USB socket designed for one of the card slots in a PC. It takes a small
rectangular hole and two screw holes in the panel. This is powered by a 12vdc
to 5 vdc switcher Mean Well from Mouser. Mine was for my I Pad which requires
that you bias the data lines or the charger doesn't.
Bob's solution using the cigar lighter socket and a plug in USB charger does simplify
the problem. I don't particularly like Cigar lighter outlets as a power
connector due to size, they are purpose built to heat a coil to light a cigar
not as a GP power outlet but they work. If you use a plug in adaptor make sure
that it's rated output is enough for the purpose.
Ralph
Sent from my iPad
Message 2
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| Subject: | Re: Nav/position light specs |
"...Roll your own LED position lights..."
I have published a lot on this and need o get this stuff back on my website. I
took it off to work on it, so it needs updating...but the specs are still the
same.
Remember--
1) You never use bright narrow angle LEDs and then try to fill in the required
spatial distribution. (A narrow exception to this rule might be LED beacons).
2) Many LED products are simply bogus. The attached paper will make you smart enough
to tell the difference.
3) Your buddy who rolls their own (or buys a poorly designed product) puts YOU
in grave danger. Don't let them do it.
The attached was rewritten for Kitplanes, but they rejected it perfunctorily. My
writing is intentionally a bit edgey--as any reader of this blog will tell you.
Comments appreciated.
I used to sell my red and green LED position lights, but like so many products,
I discontinued them because of the labor involved. But one of my first customers
called to thank me...he landed at a dark field in Texas with failed landing
lights. But as he got closer to the runway the LED position lights illuminated
the runway.
Those babies were bright.
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=383219#383219
Attachments:
http://forums.matronics.com//files/ledlighting_article_207.pdf
Message 3
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| Subject: | Re: Nav/position light specs |
The items made by Ztron Labs are very price competitive which may make the
'roll your own' option not worth it
John (RV9a-Wings complete)
----- Original Message -----
From: "Roger & Jean Curtis" <mrspudandcompany@verizon.net>
Sent: Sunday, September 16, 2012 12:55 AM
Subject: AeroElectric-List: Nav/position light specs
> <mrspudandcompany@verizon.net>
>
> I am considering a "roll your own" set of LED lights for my homebuilt
> aircraft. I know that I have seen the specs here on this forum. Can
> someone point me in the direction of the FAA specs for the
> navigation/position lights.
>
> Thanks,
>
> Roger
>
>
>
Message 4
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| Subject: | Re: Nav/position light specs |
Subject: Re: AeroElectric-List: Nav/position light specs
Thanks everyone for your great info. Now I must digest it and come up with
a plan.
Roger
Message 5
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| Subject: | Re: USB power socket |
Hi
Why not use something like this. Purpose built for cars and 12V systems.
http://www.canadiantire.ca/AST/browse/4/Auto/VehicleAccessories/InteriorCarGadgets/PRD~0374496P/USB+12V+Auxiliary+Power+Outlet.jsp?locale=en
Cheers
Les
----- Original Message -----
From: Peter Pengilly <peter@sportingaero.com>
Subject: Re: AeroElectric-List: USB power socket
> John,
>
> I don't think so, it looks like this only provides a hard
> mounted USB
> socket - it does not do any voltage transforming. You would have
> to use a
> normal USB cable in the back side to connect to a 12/15v to 5v
> transformer.
> See
> http://www.neutrik.com/uk/en/dataconnectors/210_t2_619292854/NAUSB-W_detail.aspx
>
>
> Peter
>
> On 15 September 2012 10:16, JOHN TIPTON
> <jmtipton@btopenworld.com> wrote:
>
> > jmtipton@btopenworld.com>
> >
> > Hi
> >
> > Is this what I need to mount a USB (power) outlet for my
> 12/14volt RV
> >
> > http://www.ebay.co.uk/itm/**200816366519?ssPageName=STRK:**
> >
> MEWAX:IT&_trksid=p3984.m1438.**l2649<http://www.ebay.co.uk/itm/200816366519?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649>>
> > Regards
> >
> > John
> >
> >
> >
> >
> >
> >
>
Message 6
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| Subject: | Re: USB power socket |
Perfect
Sent from my iPad
On 16 Sep 2012, at 16:25, LES KEARNEY <Kearney@shaw.ca> wrote:
> Hi
>
> Why not use something like this. Purpose built for cars and 12V systems.
>
> http://www.canadiantire.ca/AST/browse/4/Auto/VehicleAccessories/InteriorCa
rGadgets/PRD~0374496P/USB+12V+Auxiliary+Power+Outlet.jsp?locale=en
>
> Cheers
>
> Les
>
> ----- Original Message -----
> From: Peter Pengilly <peter@sportingaero.com>
> Date: Saturday, September 15, 2012 3:53 am
> Subject: Re: AeroElectric-List: USB power socket
> To: aeroelectric-list@matronics.com
>
> > John,
> >
> > I don't think so, it looks like this only provides a hard
> > mounted USB
> > socket - it does not do any voltage transforming. You would have
> > to use a
> > normal USB cable in the back side to connect to a 12/15v to 5v
> > transformer.
> > See
> > http://www.neutrik.com/uk/en/dataconnectors/210_t2_619292854/NAUSB-W_det
ail.aspx
> >
> >
> > Peter
> >
> > On 15 September 2012 10:16, JOHN TIPTON
> > <jmtipton@btopenworld.com> wrote:
> >
> > > jmtipton@btopenworld.com>
> > >
> > > Hi
> > >
> > > Is this what I need to mount a USB (power) outlet for my
> > 12/14volt RV
> > >
> > > http://www.ebay.co.uk/itm/**200816366519?ssPageName=STRK:**
> > >
> > MEWAX:IT&_trksid=p3984.m1438.**l2649<http://www.ebay.co.uk/itm/2008163
66519?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649>>
> > > Regards
> > >
> > > John
> > >
> > >
> > >
> > >
> > >
> > >
> >
>
>
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Message 7
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| Subject: | Why multiple skinny power wires? |
On 9/14/2012 10:26 AM, Robert L. Nuckolls, III wrote:
> Redundancy is not well addressed
> . . . one of the wires could be bad and you\
> wouldn't know it
Bob, on the GNS480 (nee CNX80) IImorrow/Apollo (now Garmin) addressed
that by inhibiting certain functions of the radio if both leads weren't
hot. For instance, I think the comm radio or the VOR receiver quits if
both leads aren't hot.
Of course, if you didn't know that, you'd think you'd have a bad
radio... and nowadays, Garmin will happily relieve of you $1000 to
advise that "bench tests OK"... :-)
Paul
--
Please note my new email address!
millner@me.com
Message 8
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| Subject: | Re: Why multiple skinny power wires? |
The 430 does this with nav and comm functions. Not sure why you would ever want
only one of functions but the option is there.
Tim
Sent from my iPhone
On Sep 16, 2012, at 12:42 PM, Paul Millner <millner@me.com> wrote:
>
>
> On 9/14/2012 10:26 AM, Robert L. Nuckolls, III wrote:
>> Redundancy is not well addressed
>> . . . one of the wires could be bad and you\
>> wouldn't know it
>
> Bob, on the GNS480 (nee CNX80) IImorrow/Apollo (now Garmin) addressed that by
inhibiting certain functions of the radio if both leads weren't hot. For instance,
I think the comm radio or the VOR receiver quits if both leads aren't hot.
>
> Of course, if you didn't know that, you'd think you'd have a bad radio... and
nowadays, Garmin will happily relieve of you $1000 to advise that "bench tests
OK"... :-)
>
> Paul
>
> --
> Please note my new email address!
> millner@me.com
>
>
>
>
>
Message 9
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| Subject: | Re: Why multiple skinny power wires? |
Those are multiple wires to multiple pins, not multiple wires to the
SAME pin as in the original post from the SkyRadar installer.
The 430 specifies a 10A CB on the com and a 5A CB for the Nav. I suppose
they could have used one 15A circuit, but that would require larger wire
that wouldn't fit in the connector pins. That makes sense.
John Grosse
> Tim Andres <mailto:tim2542@sbcglobal.net>
> September 16, 2012 3:58 PM
> <tim2542@sbcglobal.net>
>
> The 430 does this with nav and comm functions. Not sure why you would
> ever want only one of functions but the option is there.
> Tim
>
> Sent from my iPhone
>
>
Message 10
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| Subject: | Re: Why multiple skinny power wires? |
I have no idea.
However...consider the case where several high-current devices are driven off a
single power source simultaneously. In that case a substantial amount of weight
can be saved by using "tree" architecture for the wiring harness, instead of
"bus" architecture. Essentially each high current device likely to be on simultaneously
has it's own smaller conductor. All these are bundled into the main
trunk, which gets larger and larger the closer to the battery you get. At the
battery, the tree has many separate circuit breakers and perhaps remote switches.
Advantage: Lighter weight.
Disadvantage: Greater complexity.
The fraction of aircraft weight attributed to wiring is reasonably small. However,
if you're going to Jupiter...or building a multi-engine electric airplane,
it's a big concern.
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=383263#383263
Message 11
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| Subject: | Re: USB Power Socket |
Ralph,
The 12 volt power socket I suggest is not a cigar lighter and not intended for
that use. It is a purpose built 12 volt power socket that is in a form factor
similar to the old cigar lighter outlet but it is not the same thing. It is
to be used to provide 12 volt power to devices such as the USB adaptors.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Sep 16, 2012, at 7:47 AM, Ralph <hooverra@comcast.net> wrote:
I used a USB socket designed for one of the card slots in a PC. It takes a small
rectangular hole and two screw holes in the panel. This is powered by a 12vdc
to 5 vdc switcher Mean Well from Mouser. Mine was for my I Pad which requires
that you bias the data lines or the charger doesn't.
Bob's solution using the cigar lighter socket and a plug in USB charger does simplify
the problem. I don't particularly like Cigar lighter outlets as a power
connector due to size, they are purpose built to heat a coil to light a cigar
not as a GP power outlet but they work. If you use a plug in adaptor make sure
that it's rated output is enough for the purpose.
Ralph
Message 12
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| Subject: | Re: USB Power Socket |
I have installed 2 of these in my homebuilt and no radio interference on the voice
channels. Walmart makes 2 nice USB powered goose neck LED lights that fit
in the sockets. I may need to make a retention device but unknown at this time
if the devices will come loose during flight
----- Original Message -----
From: Robert Borger <rlborger@mac.com>
Sent: Sun, 16 Sep 2012 18:16:49 -0500 (CDT)
Subject: Re: AeroElectric-List: Re: USB Power Socket
Ralph,
The 12 volt power socket I suggest is not a cigar lighter and not intended for
that use. It is a purpose built 12 volt power socket that is in a form factor
similar to the old cigar lighter outlet but it is not the same thing. It is
to be used to provide 12 volt power to devices such as the USB adaptors.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Sep 16, 2012, at 7:47 AM, Ralph <hooverra@comcast.net> wrote:
I used a USB socket designed for one of the card slots in a PC. It takes a small
rectangular hole and two screw holes in the panel. This is powered by a 12vdc
to 5 vdc switcher Mean Well from Mouser. Mine was for my I Pad which requires
that you bias the data lines or the charger doesn't.
Bob's solution using the cigar lighter socket and a plug in USB charger does simplify
the problem. I don't particularly like Cigar lighter outlets as a power
connector due to size, they are purpose built to heat a coil to light a cigar
not as a GP power outlet but they work. If you use a plug in adaptor make sure
that it's rated output is enough for the purpose.
Ralph
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