Today's Message Index:
----------------------
1. 03:24 AM - Re: How to Use Your iPhone with Your Garmin Audio Panel (Stuart Hutchison)
2. 07:29 AM - Re: Solid state trim controller (Eric M. Jones)
3. 07:53 AM - Re: Over-voltage Circuit Breaker Trips (Eric M. Jones)
4. 08:08 AM - Re: Solid state trim controller (Robert L. Nuckolls, III)
5. 08:16 AM - The last wave of 9lb jump start kits are shipped (rparigoris)
6. 08:40 AM - Stuff for sale (rparigoris)
7. 09:10 AM - Re: Re: Over-voltage Circuit Breaker Trips (Robert L. Nuckolls, III)
8. 08:58 PM - Re: Solid state trim controller (Jeffrey W. Skiba)
9. 10:02 PM - Re: Solid state trim controller (Robert L. Nuckolls, III)
Message 1
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| Subject: | How to Use Your iPhone with Your Garmin Audio Panel |
Thank you Bob. I'm glad to avoid the extra research for my iPhone and a
GMA-240 as well !
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Bob
Falstad
Sent: Tuesday, July 17, 2012 12:33 PM
Subject: AeroElectric-List: How to Use Your iPhone with Your Garmin Audio
Panel
Folks,
Rather than ask a question, I thought I'd pass on one solution I came up
with if you want/need to plug your iPhone into your Garmin Audio Panel (my
audio panel is the non-TSO'd GMA 240 but I assume this approach will work
with other Garmin audio panels, at least). I need this capability to call
ATC for IFR clearances from uncontrolled fields where there aren't other
communication capabilities.
Best regards,
Bob
GlaStar N248BF
~460 Hours
Per "Peter" at Garmin Tech Support, the three conductors in the 2.5 mm patch
cord that plugs into the audio panel have the following functions:
Tip = Mic
Ring = Audio
Sleeve = Common/Ground.
He had access to documentation for the iPhone's four-conductor, 3.5 mm
plug/receptacle and he said it is wired up like this:
Tip = R.H. Audio Channel
Ring No. 1 = L.H. Audio Channel
Ring No. 2 = Common/Ground
Sleeve = Mic.
I found the following item (iPhone TTY Adapter) on Apple's on-line store.
http://store.apple.com/us/product/MA854G/A?fnode=MTY1NDAzOQ#overview (The
part number is MA854G/A.) Our local Apple store had one in stock so I
bought it. It is pretty spendy at $19 but it is an Apple, not third-party,
product and the build quality looks good (it is very small and could get
lost easily). You may be able to find another source that is less expensive.
I checked it out with my ohmmeter. Here are the results:
Male 3.5 mm Plug Female 2.5 mm Receptacle
Tip (open)
Ring No. 1 Ring
Ring No. 2 Sleeve
Sleeve Tip
I tested it out tonight with the 2.5mm patch cord that came with the audio
panel and it works just fine. I got mono audio in both ears on my Bose
headset. My wife said she could hear me just fine (this was a ground test
without the engine running) and I could hear her just fine. As you place
the call, you do hear all the normal ringing sounds as the call goes
through.
So now you know where to get an item that will allow iPhone users to plug
their phone into their Garmin audio panels.
Message 2
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| Subject: | Re: Solid state trim controller |
A "solid-state trim controller" can mean many things.
I sell the TSCMR...True Servo Controller for MAC/RAC trim boxes by the boatload,
as well as the Extraordinary Non-MAC servo controller for controlling Futaba
and various RC-type servos.
--------
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=378500#378500
Attachments:
http://forums.matronics.com//files/tscmr_installation_manual_168.pdf
http://forums.matronics.com//files/egpnmsc_256.pdf
Message 3
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| Subject: | Re: Over-voltage Circuit Breaker Trips |
> If wired correctly understand that the OV CB can not be your problem. It does
nothing unless the OV triggers it. When the crowbar OV circuit activates, it
shorts the CB to ground and the CB pops. Bob does have a little test procedure
published on how to test or set the trip point of
> the OV module. I would suggest checking the trigger voltage or replacing
> the OV module....Ken
Au contraire, mon frere. The OV CB can easily be your problem: The OVP as currently
designed WILL exceed the maximum Rated Breaking Capacity (Icn) in many or
most applications.
The result of this is that many CBs, when popped for the first time are functionally
and permanently ruined and might thereafter exhibit nuisance tripping. If
just sitting on the shelf, be aware that someone might have tested them incorrectly.
When the Icn is exceeded the CB might thereafter break at a current lower
than specified on the label.
Testing the CB is easy, but must be done correctly (Google "testing circuit breakers")
The fine details (like how much residual resistance is in the circuit,
and the capability of the battery, and the exact type of breaker) matter.
And yes Bob disagrees, but the evidence is clear.
--------
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=378502#378502
Message 4
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| Subject: | Re: Solid state trim controller |
At 03:42 PM 7/16/2012, you wrote:
><captainmarty@bellsouth.net>
>
>Lectric' Bob,
>Have you done anything with the two channel solid-state trim
>controller? If so when might a circuit board be available?
>I downloaded the PDF drawing of the circuit but could not find
>anything on the AE Connection web site. A three channel board would
>be useful for those with rudder trim.
Marty,
Thanks for reminding me of this. I went to the
hammer-n-tongs bin to see how far that effort
had progressed and found that the board was
finished and checked. Don't recall what force
moved it to one side but it's back on the rails.
Emacs!
Ordered boards and relays today. I will be able to offer
bare boards for the DIY crowd and assembled boards with
connector kits for the plug-n-play folks.
I'll have a production proof-batch of six boards about the
first of next week.
These are single channel boards, 2.5" long by 1.9" wide and
a 15-pin D-sub on one edge. There are two speed setting
potentiometers that control a constant-voltage supply to
the trim motor. These may be used/ignored as the installation
dictates. In other words, leaving the speed control pins
un-terminated makes the board function as a rudimentary
relay-deck. I'll probably put a non-adjustable relay-deck
in the catalog along with the adjustable version.
Bob . . .
Message 5
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| Subject: | The last wave of 9lb jump start kits are shipped |
Hi Group
Sorry but I don't have time to send individual E-mails to those waiting for their
9lb jump start kits or parts.
Everything owed is in the mail.
I dropped off half yesterday (Monday Y12-07-16) to the USPS and half today (Tuesday
Y12-07-17).
The latest expected delivery is this Thursday (TX).
If someone does not receive their stuff by lets say next Tuesday please contact
me.
I topped off all batteries before I packed them.
I apologize to the person who has to remove all the tape and reinforcement I used
on the battery/s this shipment (in hopes of keeping any damage to a minimum.
Sorry for the delay, this is the first time in weeks i caught a break.
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=378506#378506
Message 6
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Hi Group
My build partners Company is closing down their New York office.
Here is stuff we need to do something with:
https://skydrive.live.com/redir?resid=550FC20DBDDB521D!714&authkey=!AG8XLx66O0lfgl8
The Data-loggers may be spoken for.
Would prefer to ship as a lot.
Anyone interested?
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=378507#378507
Message 7
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| Subject: | Re: Over-voltage Circuit Breaker Trips |
At 09:53 AM 7/17/2012, you wrote:
If wired correctly understand that the OV CB can not be your problem.
It does nothing unless the OV triggers it. When the crowbar OV
circuit activates, it shorts the CB to ground and the CB pops. Bob
does have a little test procedure published on how to test or set the
trip point of the OV module. I would suggest checking the trigger
voltage or replacing
the OV module....Ken
Au contraire, mon frere. The OV CB can easily be your problem:
The OVP as currently designed WILL exceed the maximum Rated Breaking
Capacity (Icn) in many or most applications.
The result of this is that many CBs, when popped for the first time
are functionally and permanently ruined and might thereafter exhibit
nuisance tripping. If just sitting on the shelf, be aware that
someone might have tested them incorrectly. When the Icn is exceeded
the CB might thereafter break at a current lower than specified on the label.
Testing the CB is easy, but must be done correctly (Google "testing
circuit breakers") The fine details (like how much residual
resistance is in the circuit, and the capability of the battery, and
the exact type of breaker) matter.
And yes Bob disagrees, but the evidence is clear.
"Many CBs" is non-qualified . . .
For every discussion in which I participated on this
subject I think I made it clear that the circuit breakers
being considered were the mil-spec, miniature breakers
or their commercial counterparts. I cited boat-loads
of testing for this style of breaker per Mil-C-5809
wherein one can read the requirement for continued
functionality of the device under test AFTER being
subjected to several cycles at thousands of amps in a
forced trip. I even crafted a page that spoke to circuit
breakers NOT qualified to those specifications:
http://tinyurl.com/7desrtb
The last breaker in that Shop Note had indeed been
subject to a single operation of a crow-bar ovm
module. Clearly this device was not a candidate for
use aboard aircraft whether upstream of a crowbar module
or not.
I will refer you to Mil-C-5809G, Table VII, wherein each
device under test is subjected to two operations each at
rated interruption current at sea level and rated altitude.
An exemplar rating can be found in MS3320, Table III where
they speak to test currents of 2,000 to 6,000 amps depending
on breaker rating. The breaker is to remain functional after
being subjected to those test levels.
From the Eaton catalog:
Emacs!
When the Crowbar OVM products from AEC or B&C or PlanePower
are installed per recommendations for breaker selection,
design goals are being met.
This style of breaker is exceedingly unlikely to ever have
been "tested" beyond their design requirements for qualification.
I watched some testing at Beech at the 3000A fault levels.
It's not a trivial task to generate that kind of test
level . . . it's not going to be 'exceeded' by the occasional,
mis-informed user of such devices. Further, using the crow-bar
shut-down technique downstream of such breakers isn't even
going to make the breathe hard much less break a sweat. I proved
this in the Beech test labs when crowbar shutdown was provisionally
qualified to be installed on the model 38P
http://tinyurl.com/7smb4k5
and later when the B&C standby alternator was added to the type
certificate for the A36.
My brother-in-law was similarly mis-educated by some grey-beard
journeymen when he got his ticket to string wires in buildings.
The tale being circulated was that any new breaker subject to
an hard fault trip was already 'damaged goods' and required
replacement.
This is counter-intuitive to both the reasons that breakers
exist, the skill of those who design them and specify them into
finished goods. This is old science who's utility should not be
polluted by those who have never been there, done that, or read
and understood the design and test data. If any breaker is at
risk for damage the first time it is tripped, then it's NOT suited
to the task and should be replaced with one that is.
Please refrain from personalizing this as "a disagreement"
between myself and others . . . please refer to the documents
cited and explain how they are not applicable to the discussion
at hand. Let us take care that we do not propagate shop and hangar
myths here on the List. Let us be specific on just WHAT KIND
of breaker is being discussed, what it's specifications are and
how it is expected to perform.
Bob . . .
Message 8
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| Subject: | Solid state trim controller |
I second the request for 3 channel trim but depending on price one could
always buy two 2 channel boards and just not use one channel.
Any idea on price yet ? or still too early ?
Thanks
Jeff.
At 03:42 PM 7/16/2012, you wrote:
<captainmarty@bellsouth.net>
Lectric' Bob,
Have you done anything with the two channel solid-state trim controller? If
so when might a circuit board be available?
I downloaded the PDF drawing of the circuit but could not find anything on
the AE Connection web site. A three channel board would be useful for those
with rudder trim.
Marty,
Thanks for reminding me of this. I went to the
hammer-n-tongs bin to see how far that effort
had progressed and found that the board was
finished and checked. Don't recall what force
moved it to one side but it's back on the rails.
Emacs!
Ordered boards and relays today. I will be able to offer
bare boards for the DIY crowd and assembled boards with
connector kits for the plug-n-play folks.
I'll have a production proof-batch of six boards about the
first of next week.
These are single channel boards, 2.5" long by 1.9" wide and
a 15-pin D-sub on one edge. There are two speed setting
potentiometers that control a constant-voltage supply to
the trim motor. These may be used/ignored as the installation
dictates. In other words, leaving the speed control pins
un-terminated makes the board function as a rudimentary
relay-deck. I'll probably put a non-adjustable relay-deck
in the catalog along with the adjustable version.
Bob . . .
_____
No virus found in this message.
Checked by AVG - www.avg.com
Message 9
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| Subject: | Solid state trim controller |
At 10:57 PM 7/17/2012, you wrote:
>I second the request for 3 channel trim but depending on price one
>could always buy two 2 channel boards and just not use one channel.
>
>Any idea on price yet ? or still too early ?
At first blush, an assembled and tested
relay deck with 2-speed adjustability
and a mating connector kit will be offered
at $45.
For the configuration shown, a '2-channel'
relay deck is simply assembled on the two-up
etched circuit boards as fabricated. They're
small and there's little to be gained by
physically combining two controllers onto
a single board. This would also have the effect
of forcing replacement of both controllers
in the event that one of was damaged or failed.
I think it more prudent to offer 'single channel'
assemblies as shown so that the builder may choose
to assemble as many as necessary for their
particular project.
Bob . . .
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