Today's Message Index:
----------------------
1. 12:53 AM - Re: headphone wiring / bluetooth? (Frank)
2. 03:46 AM - bonding strap (The Minearts)
3. 04:33 AM - Re: Battery Monitor - Bogus or Brilliant? (Chuck Jensen)
4. 06:12 AM - Re: headphone wiring / bluetooth? (Carlos Sa)
5. 06:17 AM - Re: bonding strap (Robert L. Nuckolls, III)
6. 06:28 AM - Re: headphone wiring / bluetooth? (Fiveonepw@aol.com)
7. 06:37 AM - Re: headphone wiring / bluetooth? (Lloyd, Daniel R.)
8. 06:41 AM - Re: Battery Monitor - Bogus or Brilliant? (Eric M. Jones)
9. 06:44 AM - Re: headphone wiring / bluetooth? (Kevin Seuferer)
10. 07:12 AM - -List: headphone wiring / bluetooth? (Jim Wickert)
11. 07:34 AM - Re: Mini-EFIS Panel Considerations INNOCENT GLOBAL 0.3072 1.0000 -0.3180 (Hinde, Frank George (Corvallis))
12. 08:01 AM - Re: headphone wiring / bluetooth? (Craig Payne)
13. 08:05 AM - Re: headphone wiring / bluetooth? (N1deltawhiskey@aol.com)
14. 08:11 AM - Re: headphone wiring / bluetooth? (Craig Payne)
15. 11:16 AM - Re: Temperature compensation (Gilles Tatry)
16. 11:40 AM - Re: Re: headphone wiring (Steve Sampson)
17. 12:23 PM - Solid state dimmer control (Bill and Marsha)
18. 01:34 PM - Converting IR to ER (Mark R. Supinski)
19. 01:57 PM - Re: Converting IR to ER (Mark R Steitle)
20. 02:23 PM - Re: Solid state dimmer control (glaesers)
21. 03:48 PM - Re: Converting IR to ER (Eric M. Jones)
22. 04:05 PM - Re: Re: Converting IR to ER (Sean Stephens)
23. 04:36 PM - Re: headphone wiring / blue tooth? (Charlie Kuss)
24. 05:06 PM - Re: Re: Solid state dimmer control (John Schroeder)
25. 08:05 PM - Re: Battery Monitor - Bogus or Brilliant? (Brian Lloyd)
26. 08:13 PM - Re: Re: Battery Monitor - Bogus or Brilliant? (Brian Lloyd)
27. 08:38 PM - Re: Converting IR to ER (Charlie Kuss)
28. 08:38 PM - Re: Re: headphone wiring (Charlie Kuss)
29. 08:48 PM - Re: Solid state dimmer control (Bob White)
30. 10:04 PM - Re: Battery Monitor - Bogus or Brilliant? (Speedy11@aol.com)
31. 10:11 PM - Re: Battery Monitor - Bogus or Brilliant? (Speedy11@aol.com)
Message 1
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Subject: | Re: headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: Frank <frankvdh@xtra.co.nz>
Your cordless phone doesn't generate static... it picks up radio signals
that it doesn't understand and you hear 'static'. From this point of
view, a cockpit is a more suitable environment for a wireless device
than your home, because there are less sources of radio signals, and
those that are there (transponder, comm radio) are tightly controlled.
Charlie Kuss wrote:
>--> AeroElectric-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
>
>Matt,
> Modern cordless phones work quite well. However, my point is that the
>cockpit of an aircraft is a different environment compared to your home. My
>cordless phones work well most of the time. Sometimes though, they will
>generate some static when I walk around while using them. Does your phone
>act up if you walk near an operating TV set? There are more electronic at
>much closer distances.
> Comparing the environment consumer electronics operate in to the aviation
>environment is an apples to oranges comparison, in my view. I'm not saying
>it can't be done, but it would cost a lot more than the price of comparable
>consumer electronics. I remember cabin speakers, but why would I (or
>anyone) want to go back to that. I remember black and white TV as well. I
>certainly will never buy another one, though. (of course, that's just me.)
>If you or any other Lister wants to attempt to tackle that challenge, I
>wish you the best of luck.
>Charlie
>
>
Message 2
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--> AeroElectric-List message posted by: "The Minearts" <smineart@mahaska.org>
I bought a piece of the biggest tinned copper braid from Wicks, 5/8 in. wide.
Is this big enough for bonding/grounding straps for a 14v system- (Odyssey PC680,
John Deere 18A Alt)?
Steve Mineart, CH601/Corvair
Message 3
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Subject: | Battery Monitor - Bogus or Brilliant? |
--> AeroElectric-List message posted by: "Chuck Jensen" <cjensen@dts9000.com>
Brian Lloyd, where have you been? We've missed your erudiant postings.
On a long cruise or were you on one of those missions 'you can't talk
about?'
Chuck Jensen
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com [mailto:owner-
> aeroelectric-list-server@matronics.com] On Behalf Of Brian Lloyd
> Sent: Wednesday, December 14, 2005 1:10 AM
> To: aeroelectric-list@matronics.com
> Subject: Re: AeroElectric-List: Battery Monitor - Bogus or Brilliant?
>
> --> AeroElectric-List message posted by: Brian Lloyd
<brian-yak@lloyd.com>
>
> Craig Payne wrote:
>
> > "The Peukert number is determined empirically, by testing the
battery at
> > different rates."
> >
> > So how does this box discern the Peukert number for the battery it
is
> > monitoring? At least they have a chance of tracking the amount of
energy
> in
> > the battery as they are monitoring current flow in and out with a
shunt.
> I
> > would have used a Hall effect sensor but I don't know Peukert's
formula
> from
> > a hole in the ground.
>
> Craig, you have to actually measure the capacity of the battery at two
> different discharge rates. You may find that many of the gel-cell
makers
> will give capacity in AH at two different discharge rates. If you know
> that you can calculate Peukert's exponent.
>
> lead-acid battery capacity is given by the following:
>
> I
> n * t = C
>
> Where I = discharge current
> t = time
> n = Peukert's exponent, typically about 1.25
> C = battery capacity constant
>
> If you want to calculate Peukert's exponent for your battery,
discharge
> it using two different currents and take the time for each. You then
> plug the two currents and the two times into the following equation:
>
>
> n = (log t2 - log t1) / (log I1 - log I2)
>
> Once you know n you can calculate the capacity of the battery over a
> wide range of discharge currents. Try to pick two discharge rates that
> bracket your normal usage.
>
> On my boat I would not always have the ability to recharge the battery
> bank fully so knowing the exact charge state was important. I could go
> several cycles of charge and discharge without ever reaching a full
> discharge or a full charge. With a proper value for Peukert's exponent
> my battery monitor was very accurate on remaining energy (more on this
> later). But this is pretty much a moot point because in aircraft we
are
> going to recharge the battery after each discharge cycle.
>
> BTW, a number of the battery energy monitors out there may claim to do
a
> calculation based on Peukert's exponent but most just have a lookup
> table for a range of currents and don't allow the adjustment of the
> exponent. The only energy monitor I know of that actually uses
Peukert's
> exponent to do accurate on-the-fly calculation of remaining capacity
is
> Ample Power's "EMON-2". I can attest to its accuracy.
>
> And it is way overkill for use in an airplane for all the reasons Bob
> mentioned.
>
>
> --
> Brian Lloyd 2243 Cattle Dr.
> brian-yak at lloyd dot com Folsom, CA 95630
> +1.916.367.2131 (voice) +1.270.912.0788 (fax)
>
> I fly because it releases my mind from the tyranny of petty things . .
.
> - Antoine de Saint-Exupery
>
>
>
>
>
Message 4
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Subject: | headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: Carlos Sa <carlosfsa@yahoo.com>
Interesting question, Craig
http://www.mobileinfo.com/Bluetooth/FAQ.htm#g2
do not archive
Carlos
Craig Payne <craig@craigandjean.com> wrote: --> AeroElectric-List message posted
by: "Craig Payne"
Extra points to anyone who can describe why Bluetooth is called Bluetooth.
-- Craig
---------------------------------
Message 5
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Subject: | Re: bonding strap |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 05:36 AM 12/14/2005 -0600, you wrote:
>--> AeroElectric-List message posted by: "The Minearts" <smineart@mahaska.org>
>
>I bought a piece of the biggest tinned copper braid from Wicks, 5/8 in.
>wide. Is this big enough for bonding/grounding straps for a 14v system-
>(Odyssey PC680, John Deere 18A Alt)?
>Steve Mineart, CH601/Corvair
Sure.
Actually, if B&C is still building them the same way I used
to, I threaded two strands of braid INSIDE the outer braid
for VERY low resistance and robust mechanics.
Bob . . .
Message 6
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Subject: | Re: headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: Fiveonepw@aol.com
In a message dated 12/13/05 8:59:02 PM Central Standard Time,
chaztuna@adelphia.net writes:
> I think that this isn't a really good idea for aviation.
>>>>
Seems they used to say the same thing about nosewheels....
(Uh-oh!)
Sorry, Charlie- just couldn't resist! 8-)
Mark do not archive
Message 7
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Subject: | headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: "Lloyd, Daniel R." <LloydDR@wernerco.com>
I will take those points now :)
The system is named after a Danish king Harald Bltand (Harold I of Denmark in English),
King of Denmark and Norway from 935 and 936 respectively, to 940 known
for his unification of previously warring tribes from Denmark (including Skne,
present-day Sweden, where the Bluetooth technology was invented) and Norway.
Bluetooth likewise was intended to unify different technologies like computers
and mobile phones. The Bluetooth logo merges the Nordic runes analogous to
the modern Latin H and B: and . This is the official story; however, the actual
Harald Bltand that was referred to in naming Bluetooth was most probably the
liberal interpretation given to him in The Long Ships by Frans Gunnar Bengtsson,
a Swedish best-selling Viking-inspired novel.
The name was originally only a code-name for the project but ended up sticking...
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Craig Payne
Subject: RE: AeroElectric-List: headphone wiring / bluetooth?
--> AeroElectric-List message posted by: "Craig Payne" <craig@craigandjean.com>
Here is the link to the Aveo non-Bluetooth wireless headset:
http://aveousa.com/avionics/intercom/index.php
They make a number of arguments as to why you *don't* want to use Bluetooth
in your wireless headset. Not sure I agree with them but you should at least
read it before you buy.
Extra points to anyone who can describe why Bluetooth is called Bluetooth.
-- Craig
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jim Baker
Subject: Re: AeroElectric-List: headphone wiring / bluetooth?
--> AeroElectric-List message posted by: "Jim Baker"
--> <jlbaker@telepath.com>
> While we are on the subject of headset wiring how long before we
will
> see bluetooth headset/intercoms. Is this just round the corner so I
> should hold off working out wiring runs for headsets?
Aveo USA FreeSpeech I'd wait for version 2.
Jim Baker
580.788.2779
'71 SV, 492TC
Elmore City, OK
Message 8
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Subject: | Re: Battery Monitor - Bogus or Brilliant? |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
--> AeroElectric-List message posted by: Brian Lloyd brian-yak@lloyd.com
Welcome back Brian.
The method of measurement is just a distraction from the real issue--The
battery is important to remaining in the air, especially with an
electrically dependent airplane. As such, the battery juice becomes a
critical expendable if the alternator fails. The voltmeter and ammeter are
not good indicators of HOW LONG YOU'VE GOT. And that is what you need to
know and why the battery monitor is a pretty good idea. Don't even consider
a battery monitor without a "Time to Empty" reading.
One could argue that you could plot the current/voltage relationship against
a known load.....well the computer does that for you. Furthermore, other
variables like temperature are tagged on to get better accuracy. Changing
the battery blindly every year, or swapping batteries, is crazy if you can
get the information from a meter.
I submit that for VFR at least, various strategies (like another battery or
a wind-driven turbine) are used because you don't really know what's going
on inside the battery case. The Xantrex XBM and similar devices are the best
solution. (Ebay often has Xantrex XBM's for about US$200.) It handily takes
the place of several other engine instrument too.
More advanced systems monitor and charge the battery cell by cell, and can
have a spare cell or two that could be switched in while the bad cell is
switched out. But for these you have to roll your own.
>And it is way overkill for use in an airplane for all the reasons Bob
>mentioned.
Such a statement gives GMCJetPilot atomic afterburners.....
Regards,
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge MA 01550-2705
(508) 764-2072
Regards,
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge MA 01550-2705
(508) 764-2072
Don't worry about people stealing an idea. If it's original, you will have
to ram it down their throats."
-- Howard Aiken
Message 9
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Subject: | Re: headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: Kevin Seuferer <kjsifer@gmail.com>
Another interesting tidbit is the origin of the name Bluetooth which was
taken from the 10th century Danish Viking King Harald Blatand (Bluetooth
is the rough English translation of Blatand). King Harald united Denmark
and Norway during a time of bitter fighting and it was this power to
unite disparate entities that inspired the original developers.
Google rules...
Kevin
--
Kevin Seuferer -- http://www.bearhawkin.com -- Bearhawk Serial #774 -- N774KD
Kevin
>
>
> Extra points to anyone who can describe why Bluetooth is called Bluetooth.
>
> -- Craig
>
>
>
> --
Message 10
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Subject: | -List: headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: Jim Wickert <jimw_btg@earthlink.net>
It may not be bluetooth with the law suits taking place on blue tooth technology...also
many of the component mfgs are looking at WIFI in place of bluetooth.
Jim Wickert
Vision Vair #159
-----Original Message-----
From: Steve Sampson <SSampson.SLN21@london.edu>
Subject: Re: AeroElectric-List: headphone wiring / bluetooth?
--> AeroElectric-List message posted by: "Steve Sampson" <SSampson.SLN21@london.edu>
While we are on the subject of headset wiring how long before we will see
bluetooth headset/intercoms. Is this just round the corner so I should hold
off working out wiring runs for headsets?
Thanks,Steve
RV4 Kit No.4478
RV-9A G-IINI (sold)
PA18-150 G-BVMI
Message 11
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Subject: | Mini-EFIS Panel Considerations INNOCENT |
GLOBAL 0.3072 1.0000 -0.3180
--> AeroElectric-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Where I got to Larry (and I'm not flying yet) was a Dynon D100 (would
have been a D10A with a smaller panel) and a EMS engine monitor.
The EFIS is backed up with 2 steam guages (alt and a/s) and the
Pictorial pilot (autopilot)...The idea is if the EFIS goes south in IFR
then the A/P has both a turn coordintaor readout and will level the
plane when engaged.
I found the all electric six pack was expensive for the lack of
functionality.
As to the rear seat, personally I would just stick an A/s and alt steam
guage in the there. Unless you feel like you will be acting as safety
pilot to an IFR recurrancy person in the rear seat, why would they need
anymore than that? With the A/p up front its not like you need your
passenger to keep it level for you from the rear seat.
You will be limited for panel space so the BMA will give you the VOR/G/S
function...To me though this was too much dependant on one instrument,
so for navigation I have a GNS 430 (just bought the trays to defer cost
until phase 1) with the GI 206 (G/s/VOR) This is wired to the A/p...to
take you there. A PMA 7000b stereo audio panel (for marker beakons and
entertainment). A GTX 327 transponder (push button). Note the EFIS
provides the altitude encoder function.
Oh yes and a ICOM A200 for Comm 2...Nice little unit I have on my
current plane.
I wasn't going to bother with a a second radio...My first IFR flight to
watch my buddy from the back seat made me realise I needed a way to
monitor about 6 radio prequencies at the same time...Gee!
Frank
RV7A...Baffles/cowl
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Larry
E. James
Subject: AeroElectric-List: Mini-EFIS Panel Considerations INNOCENT
GLOBAL 0.3072 1.0000 -0.3180
--> AeroElectric-List message posted by: "Larry E. James"
--> <larry@ncproto.com>
I'm coming close to having to make final decisions for my panel and
order units. My flight mission includes "light" IFR capability and my
personal preference is to keep a simple more/less old-fashioned scan.
If I cannot satisfy myself that one of the current "new" products is
better; I'll stick with an all electric six-pack. My version of the
six-pack would include an electric gyro horizon with a Sandel below.
That being said, I can imagine that by simply replacing the AH and CDI
with identical EFIS display units could be a rather elegant solution.
My current conundrum comes from the EFIS units currently available.
First, I'm not a fan of their packaging.
All other instruments mount flush with the panel; I'd like these to
also. Second, none have the ability to interface with another of the
same. While at Oshkosh I asked both Dynon and BMA about this and
neither was interested. Additionally, I could see the possibility of
placing a third display in the backseat (Rocket; tandem). But alas, my
knowledge on all of this is very limited. Can anyone offer some sound
advice ??
thank you in advance,
--
Larry E. James
Bellevue, WA HR2
Message 12
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Subject: | headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: "Craig Payne" <craig@craigandjean.com>
Yup, you get the prize.
I have actually been to Bluetooth's castle.
-- Craig
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Carlos Sa
Subject: RE: AeroElectric-List: headphone wiring / bluetooth?
--> AeroElectric-List message posted by: Carlos Sa <carlosfsa@yahoo.com>
Interesting question, Craig
http://www.mobileinfo.com/Bluetooth/FAQ.htm#g2
do not archive
Carlos
Craig Payne <craig@craigandjean.com> wrote: --> AeroElectric-List message
posted by: "Craig Payne"
Extra points to anyone who can describe why Bluetooth is called Bluetooth.
-- Craig
---------------------------------
Message 13
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Subject: | Re: headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: N1deltawhiskey@aol.com
In a message dated 13-Dec-05 19:05:03 Pacific Standard Time,
craig@craigandjean.com writes:
They make a number of arguments as to why you *don't* want to use Bluetooth
in your wireless headset. Not sure I agree with them but you should at least
read it before you buy.
Craig,
The latest issue of Aviation Consumer had an article on "electronic flight
bags." A sidebar addressed Bluetooth in the cockpit as being "finicky" and
working in some cockpits and not others. Given that, I would be a little
suspicious at this point, by being sure that the supplier provided a full money
back
guarantee if one couldn't get the system to work satisfactorily.
Doug
Message 14
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Subject: | headphone wiring / bluetooth? |
--> AeroElectric-List message posted by: "Craig Payne" <craig@craigandjean.com>
Sorry, you were the second to reply. How about a consolation prize:
"Contrary to popular opinion, Bluetooth or "Bltand" as it was in old Viking
language had nothing to do with a blue tooth. It means dark complexion he
had very dark hair, which was unusual for Vikings.
...
Ericssons R&D facility at Lund is undoubtedly a centre of creative
excellence. Bluetooths genesis there follows many other new ideas,
including the Ericsson mobile phone. In fact, the first portable NMT and GSM
phones on the market were developed there. It seems that Ericsson is not
only making history, but celebrating it, too."
(http://www.cellular.co.za/bluetooth_king_harald.htm)
I've been to Ericsson's facility in Lund twice to help on a failing (and
ultimately failed) project.
-- Craig
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Lloyd,
Daniel R.
Subject: RE: AeroElectric-List: headphone wiring / bluetooth?
--> AeroElectric-List message posted by: "Lloyd, Daniel R."
--> <LloydDR@wernerco.com>
I will take those points now :)
The system is named after a Danish king Harald Bltand (Harold I of Denmark
in English), King of Denmark and Norway from 935 and 936 respectively, to
940 known for his unification of previously warring tribes from Denmark
(including Skne, present-day Sweden, where the Bluetooth technology was
invented) and Norway. Bluetooth likewise was intended to unify different
technologies like computers and mobile phones. The Bluetooth logo merges the
Nordic runes analogous to the modern Latin H and B: and . This is the
official story; however, the actual Harald Bltand that was referred to in
naming Bluetooth was most probably the liberal interpretation given to him
in The Long Ships by Frans Gunnar Bengtsson, a Swedish best-selling
Viking-inspired novel.
The name was originally only a code-name for the project but ended up
sticking...
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Craig
Payne
Subject: RE: AeroElectric-List: headphone wiring / bluetooth?
--> AeroElectric-List message posted by: "Craig Payne"
--> <craig@craigandjean.com>
Here is the link to the Aveo non-Bluetooth wireless headset:
http://aveousa.com/avionics/intercom/index.php
They make a number of arguments as to why you *don't* want to use Bluetooth
in your wireless headset. Not sure I agree with them but you should at least
read it before you buy.
Extra points to anyone who can describe why Bluetooth is called Bluetooth.
-- Craig
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jim Baker
Subject: Re: AeroElectric-List: headphone wiring / bluetooth?
--> AeroElectric-List message posted by: "Jim Baker"
--> <jlbaker@telepath.com>
> While we are on the subject of headset wiring how long before we
will
> see bluetooth headset/intercoms. Is this just round the corner so I
> should hold off working out wiring runs for headsets?
Aveo USA FreeSpeech I'd wait for version 2.
Jim Baker
580.788.2779
'71 SV, 492TC
Elmore City, OK
Message 15
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Subject: | Re: Temperature compensation |
--> AeroElectric-List message posted by: "Gilles Tatry" <gilles.tatry@wanadoo.fr>
> Okay, what you COULD do is build an external signal conditioner
> using the Analog Devices AD596/597 to provide the cold-junction
> compensation and treat the instrument like a millivolt input
> linear instrument.
>
> See
>
> http://www.analog.com/UploadedFiles/Data_Sheets/664361174AD596_597_b.pdf
>
> I keep pretty good quantities of this chip on hand. I use
> them several times a year on various investigations.
>
> There are some low cost, fast-turn etched circuit board
> houses that supply free artwork layout programs. My personal
> favorite is at http://expresspcb.com
>
> I use these folks a LOT for one-of instrumentation and
> low volume production projects at RAC and for my clients.
> I could sketch the circuit for you but I'll need to know
> the input impedance of the instrument. If you have some
> resistors, a variable bench supply and a digital voltmeter,
> we can craft an experiment to characterize the instrument's
> input.
Great!
I'me quite sure the guy who does my harness is properly equipped.
How will we proceed to characterize the instrument's input?
Thanks a lot,
Gilles
Message 16
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Subject: | Re: headphone wiring |
--> AeroElectric-List message posted by: "Steve Sampson" <SSampson.SLN21@london.edu>
All, thanks for the bluetooth input. Steve.
PS For Charlie I suggest two cans and a bit of string!
----- Original Message -----
From: "Eric M. Jones" <emjones@charter.net>
Subject: AeroElectric-List: Re: headphone wiring
> --> AeroElectric-List message posted by: "Eric M. Jones"
> <emjones@charter.net>
>
> --> AeroElectric-List message posted by: "Steve Sampson"
> <SSampson.SLN21@london.edu>
>>While we are on the subject of headset wiring how long before we will see
>>bluetooth headset/intercoms. Is this just round the corner so I should
>>hold
>>off working out wiring runs for headsets? Thanks,Steve
>
> Steve et al:
>
> Lots of wireless solutions, and more coming. I'm having a Bluetooth system
> implanted in my brain next year.
>
> But I have to wonder why the IR headsets never took off? Were they
> forgotten
> between noise-cancelling and Bluetooth?
>
> This is still an easy conversion to make, as long as no wing walking is
> planned. See:
>
> http://www.st.com/stonline/prodpres/standard/rf/chipset.htm
>
> Regards,
> Eric M. Jones
> www.PerihelionDesign.com
> 113 Brentwood Drive
> Southbridge MA 01550-2705
> (508) 764-2072
>
> "Beaten paths are for beaten men."
> -E. A. Johnston
>
>
> ______________________________________________________________________
>
> This email has been scanned by the MessageLabs Email Security System
> on behalf of the London Business School community.
> For more information please visit http://www.messagelabs.com/email
> ______________________________________________________________________
>
>
> --
> 13/12/2005
>
>
Message 17
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Subject: | Solid state dimmer control |
--> AeroElectric-List message posted by: "Bill and Marsha" <docyukon@ptcnet.net>
Bob and others On page 12-17 of aeroelectrics manual Bob shows an
example of dimmer control useing solid state circuitry. Can anyone tell me
the component values used for this ckt?
I would like to use this for my Pulsar III. Bill S.
Message 18
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Subject: | Converting IR to ER |
--> AeroElectric-List message posted by: "Mark R. Supinski" <mark.supinski@gmail.com>
Based on feedback from Bob, I decided to try and rewire my IR 80 Amp
alternator to make it an ER. I didn't get very far -- after getting the
case cracked, and removing several screws, I am at the point where I cannot
remove any of the internal bits which (presumably) are the regulator.
Attached are a series of photos along the way:
http://supinski.net:8080/IMG_2379.JPG
http://supinski.net:8080/IMG_2380.JPG
http://supinski.net:8080/IMG_2381.JPG
http://supinski.net:8080/IMG_2382.JPG
http://supinski.net:8080/IMG_2383.JPG
http://supinski.net:8080/IMG_2384.JPG
http://supinski.net:8080/IMG_2385.JPG
The final photo shows all the screws removed. (The screw in the lower left
is unscrewed, but cannot be removed due to the windings being in the way.)
Tugging will not pull out the assembly that presumably in the regulator.
In any case -- my question is: am I done? Chuck it & start looking for a
new alternator to order?
Thanks,
Mark Supinski
Message 19
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Subject: | Converting IR to ER |
--> AeroElectric-List message posted by: "Mark R Steitle" <mark.steitle@austin.utexas.edu>
Mark,
There was an article on how to convert the Mitsubishi alternator in
Contact Magazine some years back. I think it was issue #19, but not
sure. Check their web site and order the issue. It will walk you
through the process.
Mark Steitle
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Mark
R. Supinski
Subject: AeroElectric-List: Converting IR to ER
--> AeroElectric-List message posted by: "Mark R. Supinski"
<mark.supinski@gmail.com>
Based on feedback from Bob, I decided to try and rewire my IR 80 Amp
alternator to make it an ER. I didn't get very far -- after getting the
case cracked, and removing several screws, I am at the point where I
cannot
remove any of the internal bits which (presumably) are the regulator.
Attached are a series of photos along the way:
http://supinski.net:8080/IMG_2379.JPG
http://supinski.net:8080/IMG_2380.JPG
http://supinski.net:8080/IMG_2381.JPG
http://supinski.net:8080/IMG_2382.JPG
http://supinski.net:8080/IMG_2383.JPG
http://supinski.net:8080/IMG_2384.JPG
http://supinski.net:8080/IMG_2385.JPG
The final photo shows all the screws removed. (The screw in the lower
left
is unscrewed, but cannot be removed due to the windings being in the
way.)
Tugging will not pull out the assembly that presumably in the regulator.
In any case -- my question is: am I done? Chuck it & start looking for
a
new alternator to order?
Thanks,
Mark Supinski
Message 20
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Subject: | Re: Solid state dimmer control |
--> AeroElectric-List message posted by: "glaesers" <glaesers@wideopenwest.com>
> Bob and others On page 12-17 of aeroelectrics manual Bob shows an
>example of dimmer control useing solid state circuitry. Can anyone tell me
>the component values used for this ckt?
>I would like to use this for my Pulsar III. Bill S.
-----------
Eric Jones sells a nice one (http://periheliondesign.com/Vregflyer.htm).
The basis is the LM317 voltage regulator. If you google that you'll get
lots of info.
Dennis Glaeser
RV7A
Message 21
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Subject: | RE: Converting IR to ER |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
--> AeroElectric-List message posted by: "Mark R Steitle"
mark.steitle@austin.utexas.edu
The article in Contact describing the conversion of an IR alternator to ER
was issue 46. The author was Paul Messinger.
Regards,
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge MA 01550-2705
(508) 764-2072
"THE-VERY-BIG-STUPID" is a thing which breeds by eating
The Future. Have you seen it? It sometimes disguises itself as a
good-looking quarterly bottom line, derived by closing the R&D
Department.
--Frank Zappa
Message 22
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Subject: | Re: RE: Converting IR to ER |
--> AeroElectric-List message posted by: Sean Stephens <schmoboy@cox.net>
<http://www.contactmagazine.com>
or
<http://www.contactmagazine.com/backissu.html>
-Sean RV-10 #40303
Eric M. Jones wrote:
> --> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
>
> --> AeroElectric-List message posted by: "Mark R Steitle"
> mark.steitle@austin.utexas.edu
>
> The article in Contact describing the conversion of an IR alternator to ER
> was issue 46. The author was Paul Messinger.
>
> Regards,
> Eric M. Jones
> www.PerihelionDesign.com
> 113 Brentwood Drive
> Southbridge MA 01550-2705
> (508) 764-2072
>
> "THE-VERY-BIG-STUPID" is a thing which breeds by eating
> The Future. Have you seen it? It sometimes disguises itself as a
> good-looking quarterly bottom line, derived by closing the R&D
> Department.
> --Frank Zappa
>
>
>
Message 23
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Subject: | Re: headphone wiring / blue tooth? |
--> AeroElectric-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
Frank,
Yes, poor choice of words on my part. I understand that cordless
receivers are the victim, not the antagonist. The ear pieces in a wireless
headset will also be victims. I suspect the success or failure of these
units will depend largely on the quality of wiring that builders of OBAM
aircraft do.
Charlie
>--> AeroElectric-List message posted by: Frank <frankvdh@xtra.co.nz>
>
>Your cordless phone doesn't generate static... it picks up radio signals
>that it doesn't understand and you hear 'static'. From this point of
>view, a cockpit is a more suitable environment for a wireless device
>than your home, because there are less sources of radio signals, and
>those that are there (transponder, comm radio) are tightly controlled.
>
>Charlie Kuss wrote:
>
> >--> AeroElectric-List message posted by: Charlie Kuss
> <chaztuna@adelphia.net>
> >
> >Matt,
> > Modern cordless phones work quite well. However, my point is that the
> >cockpit of an aircraft is a different environment compared to your home. My
> >cordless phones work well most of the time. Sometimes though, they will
> >generate some static when I walk around while using them. Does your phone
> >act up if you walk near an operating TV set? There are more electronic at
> >much closer distances.
> > Comparing the environment consumer electronics operate in to the aviation
> >environment is an apples to oranges comparison, in my view. I'm not saying
> >it can't be done, but it would cost a lot more than the price of comparable
> >consumer electronics. I remember cabin speakers, but why would I (or
> >anyone) want to go back to that. I remember black and white TV as well. I
> >certainly will never buy another one, though. (of course, that's just me.)
> >If you or any other Lister wants to attempt to tackle that challenge, I
> >wish you the best of luck.
> >Charlie
> >
> >
>
>
Message 24
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Subject: | Re: Solid state dimmer control |
--> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net>
Bill -
B&C sells several sizes of this dimmer. They work very well.
Periheliondesign also has a nice one. It makes it very easy to forego the
urge to roll your own.
John
>> Bob and others On page 12-17 of aeroelectrics manual Bob shows an
>> example of dimmer control useing solid state circuitry. Can anyone tell
>> me
>> the component values used for this ckt?
>> I would like to use this for my Pulsar III. Bill S.
> -----------
>
> Eric Jones sells a nice one (http://periheliondesign.com/Vregflyer.htm).
> The basis is the LM317 voltage regulator. If you google that you'll get
> lots of info.
>
> Dennis Glaeser
> RV7A
>
>
--
Message 25
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Subject: | Re: Battery Monitor - Bogus or Brilliant? |
--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
Chuck Jensen wrote:
> --> AeroElectric-List message posted by: "Chuck Jensen" <cjensen@dts9000.com>
>
> Brian Lloyd, where have you been? We've missed your erudiant postings.
> On a long cruise or were you on one of those missions 'you can't talk
> about?'
Ah, no. I sold the WISP in the Virgin Islands and am back in Sacramento.
I am now trying to decide what I want to do when I grow up. I think it
probably has something to do with aviation.
Of course it is possible that I have annoyed so many people elsewhere
that I had to come back here. ;-)
--
Brian Lloyd 2243 Cattle Dr.
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
Message 26
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Subject: | Re: Battery Monitor - Bogus or Brilliant? |
--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
Eric M. Jones wrote:
> --> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
>
> --> AeroElectric-List message posted by: Brian Lloyd brian-yak@lloyd.com
>
> Welcome back Brian.
>
> The method of measurement is just a distraction from the real issue--The
> battery is important to remaining in the air, especially with an
> electrically dependent airplane. As such, the battery juice becomes a
> critical expendable if the alternator fails. The voltmeter and ammeter are
> not good indicators of HOW LONG YOU'VE GOT. And that is what you need to
> know and why the battery monitor is a pretty good idea. Don't even consider
> a battery monitor without a "Time to Empty" reading.
But such a device could be relatively simple, just sampling the current
drain periodically and integrating it. Like the venerable fuel level
gauge you don't need pinpoint accuracy, just a pretty good idea of how
much is left.
> One could argue that you could plot the current/voltage relationship against
> a known load.....well the computer does that for you. Furthermore, other
> variables like temperature are tagged on to get better accuracy. Changing
> the battery blindly every year, or swapping batteries, is crazy if you can
> get the information from a meter.
I agree with the first part. I think that building an energy monitor
that deals with temp and Peukert's exponent is probably overkill for an
airplane battery monitor since the battery always starts at pretty close
to fully charged to begin with and will not go through multiple partial
charge/discharge cycles.
Don't get me wrong, I love my Amplepower battery energy monitor in my
boat. It does a fantastic job. It just isn't the same job that needs to
be done in an airplane.
> I submit that for VFR at least, various strategies (like another battery or
> a wind-driven turbine) are used because you don't really know what's going
> on inside the battery case. The Xantrex XBM and similar devices are the best
> solution. (Ebay often has Xantrex XBM's for about US$200.) It handily takes
> the place of several other engine instrument too.
For what we are talking about here a Xantrex monitor for $200 is
probably a good deal.
> More advanced systems monitor and charge the battery cell by cell, and can
> have a spare cell or two that could be switched in while the bad cell is
> switched out. But for these you have to roll your own.
That seems a bit overkill.
>>And it is way overkill for use in an airplane for all the reasons Bob
>>mentioned.
>
>
> Such a statement gives GMCJetPilot atomic afterburners.....
I still hold it is overkill. But for $200 a box that replaces a
voltmeter and two ammeters to monitor two batteries is probably a pretty
reasonable thing to do if you have the real estate in the panel.
--
Brian Lloyd 2243 Cattle Dr.
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
Message 27
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Subject: | Converting IR to ER |
--> AeroElectric-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
>--> AeroElectric-List message posted by: "Mark R Steitle"
><mark.steitle@austin.utexas.edu>
>
>Mark,
>There was an article on how to convert the Mitsubishi alternator in
>Contact Magazine some years back. I think it was issue #19, but not
>sure. Check their web site and order the issue. It will walk you
>through the process.
>
>Mark Steitle
That Contact Magazine article also shows how to convert ND alternators as
well.
Charlie Kuss
Message 28
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Subject: | Re: headphone wiring |
--> AeroElectric-List message posted by: Charlie Kuss <chaztuna@adelphia.net>
At 01:58 PM 12/14/2005, you wrote:
>--> AeroElectric-List message posted by: "Steve Sampson"
><SSampson.SLN21@london.edu>
>
>All, thanks for the bluetooth input. Steve.
>
>PS For Charlie I suggest two cans and a bit of string!
The world IS flat! Tin cans and string? What, do you think I'm made of
money?? :-)
Charlie
do not archive
Message 29
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Subject: | Re: Solid state dimmer control |
--> AeroElectric-List message posted by: Bob White <bob@bob-white.com>
On Wed, 14 Dec 2005 14:21:19 -0600
"Bill and Marsha" <docyukon@ptcnet.net> wrote:
> --> AeroElectric-List message posted by: "Bill and Marsha" <docyukon@ptcnet.net>
>
> Bob and others On page 12-17 of aeroelectrics manual Bob shows an
> example of dimmer control useing solid state circuitry. Can anyone tell me
> the component values used for this ckt?
> I would like to use this for my Pulsar III. Bill S.
>
>
Hi,
You have received several responses for purchasing pre-made dimmers,
all good choices, but just in case you want to build something yourself,
try:
C2 = 0.1 ufd
C5 = 1.0 ufd
C7 = 1.0 ufd
R3 = 500 ohm
R4 = 2K ohm pot
R6 = 240 ohm
This should give you an output adjustable from just under 4V to just
about 14V. The upper value will be limited by your input of course.
Bob W.
--
http://www.bob-white.com
N93BD - Rotary Powered BD-4 (Projected engine start - maybe next week)
Custom Cables for your rotary installation -
http://www.roblinphoto.com/shop/
Message 30
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Subject: | Re: Battery Monitor - Bogus or Brilliant? |
--> AeroElectric-List message posted by: Speedy11@aol.com
Aha. As a mathematics-oriented guy, this explanation caused me to understand
the real value of doing a load analysis. Yes, I know it just makes sense
todo a load analysis so as to know the potential load one can expect in
battery-only ops, but this formula made it crystal clear to me.
I'm planning dual Odyssey PC680s (16 Ah) and if I am down to only the standby
(endurance) battery, then at a load of 10 amps I don't have 1.6 hours of
battery life from a fully charged battery. With a Peukert exponent of 1.2, I will
only have 1.0 hour of battery life. I can greatly extend that life by
reducing the load. At a load of 5 amps, the 16 Ah battery life will extend to
beyond 2 hours.
My load analysis is taking on more life now.
Armed with that info and the knowledge of your electrical system, an airborne
pilot could make very informed decisions regarding load shedding. Having an
accurate battery monitor indicating Ah remaining or % remaining could be a
valuable tool.
The lights are slowly coming on.
Stan Sutterfield
www.rv-8a.net
>"The Peukert number is determined empirically, by testing the battery at
>different rates."
>
>So how does this box discern the Peukert number for the battery it is
>monitoring? At least they have a chance of tracking the amount of energy in
>the battery as they are monitoring current flow in and out with a shunt. I
>would have used a Hall effect sensor but I don't know Peukert's formula from
>a hole in the ground.
Found a better explanation yet!
http://www.amplepower.com/pwrnews/beer
Message 31
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Subject: | Re: Battery Monitor - Bogus or Brilliant? |
--> AeroElectric-List message posted by: Speedy11@aol.com
"If you want to calculate Peukert's exponent for your battery, discharge
it using two different currents and take the time for each. You then
plug the two currents and the two times into the following equation:
n = (log t2 - log t1) / (log I1 - log I2)
Once you know n you can calculate the capacity of the battery over a
wide range of discharge currents. Try to pick two discharge rates that
bracket your normal usage."
Couldn't the battery manufacturer do the tests and provide Peukert's exponent
for a particular type of battery?
Stan Sutterfield
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