Today's Message Index:
----------------------
1. 06:51 AM - B&C LR3C-14 Voltage Regulator (Valovich, Paul)
2. 07:15 AM - Re: B&C LR3C-14 Voltage Regulator (FLYaDIVE)
3. 07:16 AM - Re: B&C LR3C-14 Voltage Regulator (Harley Dixon)
4. 07:40 AM - Re: B&C LR3C-14 Voltage Regulator (Kent or Jackie Ashton)
5. 10:48 AM - Re: B&C LR3C-14 Voltage Regulator (Bill Watson)
6. 11:36 AM - PASS-THROUGH CHARGER (FLYaDIVE)
7. 11:49 AM - Re: PASS-THROUGH CHARGER (Dj Merrill)
8. 12:03 PM - Re: Re: OV Protection and AEC 9004-1 module (Robert L. Nuckolls, III)
9. 12:08 PM - Re: PASS-THROUGH CHARGER (FLYaDIVE)
10. 12:27 PM - Re: PASS-THROUGH CHARGER (Robert L. Nuckolls, III)
11. 12:37 PM - Re: PASS-THROUGH CHARGER (Dj Merrill)
12. 12:46 PM - Re: PASS-THROUGH CHARGER (Dj Merrill)
13. 01:33 PM - Re: PASS-THROUGH CHARGER (Robert L. Nuckolls, III)
14. 02:14 PM - Re: PASS-THROUGH CHARGER (Werner Schneider)
15. 02:16 PM - Re: PASS-THROUGH CHARGER (FLYaDIVE)
16. 02:30 PM - Re: PASS-THROUGH CHARGER (BMC_Dave)
17. 03:59 PM - Re: Re: PASS-THROUGH CHARGER (Robert L. Nuckolls, III)
18. 04:20 PM - Re: PASS-THROUGH CHARGER (BMC_Dave)
19. 04:26 PM - Re: Re: PASS-THROUGH CHARGER (Robert L. Nuckolls, III)
20. 04:50 PM - Re: PASS-THROUGH CHARGER (chris)
21. 06:01 PM - Re: PASS-THROUGH CHARGER (BMC_Dave)
22. 06:32 PM - Re: PASS-THROUGH CHARGER (Dj Merrill)
23. 06:44 PM - Re: Re: PASS-THROUGH CHARGER (Dj Merrill)
24. 10:31 PM - Re: PASS-THROUGH CHARGER (Eric Page)
25. 10:51 PM - Re: Liberty Field Flyers (Les Goldner)
Message 1
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| Subject: | B&C LR3C-14 Voltage Regulator |
I know there have been numerous discussions on this forum regarding the B&C
LR3C-14. However, I must be doing something fundamentally wrong in using t
he Search function - nothing comes up no matter how I word it.
Question: What is the optimum output voltage of an LR3C-14 and how do I adj
ust the unit to achieve it?
Paul Valovich RV-8A N192NM
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| Subject: | Re: B&C LR3C-14 Voltage Regulator |
Paul:
https://www.bandc.aero/pdfs/LR3C_Installation_Manual.pdf
Barry
On Wed, Oct 3, 2018 at 9:55 AM Valovich, Paul <pvalovich@dcscorp.com> wrote
:
> I know there have been numerous discussions on this forum regarding the
> B&C LR3C-14. However, I must be doing something fundamentally wrong in
> using the Search function =93 nothing comes up no matter how I word
it.
>
>
> Question: What is the optimum output voltage of an LR3C-14 and how do I
> adjust the unit to achieve it?
>
> Paul Valovich RV-8A N192NM
>
>
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| Subject: | Re: B&C LR3C-14 Voltage Regulator |
Morning, Paul...
Not sure why you're having problems finding it...this is what I came up
with in the first item listed after a Google search:
http://www.bandc.aero/pdfs/LR3C_Installation_Manual.pdf#page=6
It describes the unit, it's voltages, the installation, troubleshooting,
and on the last page it tells where the adjustment screw is. Also, a
phone number to call for further information.
Harley
------------------------------------------------------------------------
On 10/3/2018 9:51 AM, Valovich, Paul wrote:
>
> I know there have been numerous discussions on this forum regarding
> the B&C LR3C-14. However, I must be doing something fundamentally
> wrong in using the Search function nothing comes up no matter how I
> word it.
>
> Question: What is the optimum output voltage of an LR3C-14 and how do
> I adjust the unit to achieve it?
>
> Paul Valovich RV-8A N192NM
>
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| Subject: | Re: B&C LR3C-14 Voltage Regulator |
I am sure Bob will reply but for future reference, I got 89 hits here by searching
B&C voltage regulator
http://www.matronics.com/searching/ws_script.cgi
Found the manual here with a google search for B&C voltage regulator output
https://www.bandc.aero/pdfs/LR3C_Installation_Manual.pdf
You just gotta have magic fingers. :-)
-Kent
> On Oct 3, 2018, at 9:51 AM, Valovich, Paul <pvalovich@dcscorp.com> wrote:
>
> I know there have been numerous discussions on this forum regarding the B&C LR3C-14.
However, I must be doing something fundamentally wrong in using the Search
function nothing comes up no matter how I word it.
>
> Question: What is the optimum output voltage of an LR3C-14 and how do I adjust
the unit to achieve it?
> Paul Valovich RV-8A N192NM
Message 5
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| Subject: | Re: B&C LR3C-14 Voltage Regulator |
I assume you found the manual by now.
Optimum voltage is the one specified by your battery spec sheet since
that's the thing you are keeping fully charged. On Odyssey type
batteries my memory says it's 14.1 - 14.7 (measured at battery during
operation). Too low on this battery and it will shorten its life. Too
high, I don't know but 14.7 has been working fine for me. Different
battery technologies vary. Get the spec sheet for the battery, read it,
follow it, or you may pay later.
The little screw under the cap which you've located needs to be
accessible if there is a need to ever adjust it again. Don't mount it
on the back of the fire wall high up where you can't get at it. I did
that to both of mine and ended up having to fabricate a special tool to
get in there, blindly, to adjust it. Delays in doing so cost me a
battery (see above).
Bill "still dreaming up new cuss words for blind adjustment of LR3C-14"
Watson
On 10/3/2018 9:51 AM, Valovich, Paul wrote:
>
> I know there have been numerous discussions on this forum regarding
> the B&C LR3C-14. However, I must be doing something fundamentally
> wrong in using the Search function nothing comes up no matter how I
> word it.
>
> Question: What is the optimum output voltage of an LR3C-14 and how do
> I adjust the unit to achieve it?
>
> Paul Valovich RV-8A N192NM
>
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
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| Subject: | PASS-THROUGH CHARGER |
Electronics should be making our life and flying easier not more
complicated.
I have a Raspberry Pi (RPi) configured for ADS-B In and WX.
It is displaying the information on a iPad and so far it seams to be
working fine.
The unit is hooked to an external belly mounted antenna for the ADS-B In
and an internal antenna for WX.
At some point I hope to install an external antenna for that also.
Here is the frustrating part:
The RPi requires a power source that is a battery. I have battery that is
suppose to store 12,000 mA.
Yeah, well, I'll believe that when it runs for 34 Hours without requiring a
charge.
So, here is the rub... I am getting tired of climbing in back of the plane
to Install and Remove the battery for Charging and to remember to charg the
battery and bring it back to the plane and hook it back up... Well, you
get the idea!!!
I would like to hook up a battery, connect it to the planes power source,
have a means of turning On & Off the battery and turn On & Off the RPi
[that is easy a DPST switch] and CHARGE the battery while it is being used
to power the RPi.
Would anyone know of a PASS-THROUGH charging circuit that would accomplish
this?
My idea is also to use a larger battery. Something like a 12 AH / 12 VDC
Battery with a step-down voltage regulator for 5.2 VDC @ 2.1 Amps. That
should give me a current source of about 27 AH and 75 Hours of
operation... Not counting re-charging. ;-)
The voltage regulator has to be very well regulated in both ripple and
constant 5.2 VDC, the RPi is a bit sensitive on those things. Especially
the voltage. I know it does not like a low voltage at all.
Thanks Electron Chasers,
Barry
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| Subject: | Re: PASS-THROUGH CHARGER |
Can you skip the battery and power the RPi directly from the aircraft?
Less weight, simpler installation.
I have had an RPi setup in this manner in my aircraft for a few years
now, also for ADS-B In.
Curious, what are you using for WX (weather)? I am assuming this is
something different from the weather available via ADS-B since you have
a separate antenna for it. Would love to learn about alternatives! :-)
Thanks,
-Dj
On 10/03/2018 02:29 PM, FLYaDIVE wrote:
> I would like to hook up a battery, connect it to the planes power
> source, have a means of turning On & Off the battery and turn On & Off
> the RPi [that is easy a DPST switch] and CHARGE the battery while it is
> being used to power the RPi.
--
Dj Merrill - N1JOV - EAA Chapter 87
Currently Flying: Glastar
Previously: Cessna 150 - Glasair 1 FT - Grumman AA1B
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| Subject: | Re: OV Protection and AEC 9004-1 module |
At 08:08 AM 10/2/2018, you wrote:
><wagnermerle@gmail.com>
>
>Thanks for the info Bob. Any idea if you will come out with the 9004
>module in the future? I will go with the warning lite and B&C OV
>module for now.
Not sure. Too many projects on my plate right
now . . . but there are ideas on the back burners.
>Regarding the Grumman - can't remember that one. I have trouble
>remembering my name occasionally.. Serious case of CRS.
Yup, they say your mind is the first thing to go and
damned if I can remember what the second thing is . . .
Bob . . .
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| Subject: | Re: PASS-THROUGH CHARGER |
DJ:
The RPi requires 5 VDC so it can not be powered directly from a plane's
system, there has to be something to get it down to 5 VDC.
The WX is from UAT on 978 MHz (ADS-B) , that is why the second antenna.
You probably have the same type system.
I'm thinking of combing both antennas in the same package and mount it
outside. <-- Don't know how as yet. Size is an issue.
Barry
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| Subject: | Re: PASS-THROUGH CHARGER |
The RPi requires a power source that is a battery.
Can you share a schematic of your present power
supply and associated conditioning?
The RPi schematics I've seen all call
for the legacy 5.0v, digital logic supply
and the largest power draw I saw for the
basic Pi board was about 0.7A.
There's a host of 5v output step-down converters
that should let you run the 5v system directly
from a feeder off the ship's bus . . . no
battery needed.
Bob . . .
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| Subject: | Re: PASS-THROUGH CHARGER |
By "direct", I mean not trying to charge a battery then have the battery
run the RPi. That eliminates the complication of the charger, dual
switches, extra wiring and weight.
I'm using one of these:
https://www.amazon.com/dp/B01511SZYK
I have a switch on the panel that controls 12v going to that unit, with
that unit plugged directly into the RPi.
I built a Stratux system using the instructions from http://stratux.me/
with parts listed under the "Parts List, Dual Band" section. Both
antennas mount on the Stratux box itself. It is mounted in my tail
section but since my aircraft is fiberglass I don't need to mount the
antennas outside. It is a nice compact setup.
They do offer a suction cup option for sticking the entire thing to a
window if you have a metal airplane. I haven't tried it so I can't
offer a PIREP.
-Dj
On 10/03/2018 03:08 PM, FLYaDIVE wrote:
> The RPi requires 5 VDC so it can not be powered directly from a plane's
> system, there has to be something to get it down to 5 VDC.
>
Message 12
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| Subject: | Re: PASS-THROUGH CHARGER |
On 10/03/2018 03:26 PM, Robert L. Nuckolls, III wrote:
> the largest power draw I saw for the
> basic Pi board was about 0.7A.
They recommend a 2.5 amp power supply for the latest models, if you are
going to be powering anything off the USB ports. A typical Stratux
(ADS-B setup) uses three of the USB ports, one for a GPS, and one for
each of two radio receivers, all getting power from the RPi.
-Dj
--
Dj Merrill - N1JOV - EAA Chapter 87
Currently Flying: Glastar
Previously: Cessna 150 - Glasair 1 FT - Grumman AA1B
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| Subject: | Re: PASS-THROUGH CHARGER |
At 02:45 PM 10/3/2018, you wrote:
>
>On 10/03/2018 03:26 PM, Robert L. Nuckolls, III wrote:
> > the largest power draw I saw for the
> > basic Pi board was about 0.7A.
>
>They recommend a 2.5 amp power supply for the latest models, if you are
>going to be powering anything off the USB ports. A typical Stratux
>(ADS-B setup) uses three of the USB ports, one for a GPS, and one for
>each of two radio receivers, all getting power from the RPi.
Aha! good data . . . thanks
Bob . . .
Message 14
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| Subject: | Re: PASS-THROUGH CHARGER |
Barry,
I have very good experience with Traco Power DC-DC converters, they come
in all kind of varieties, also high power once, they are clean and work
perfect since over 15 years in my plane
Mouser does sell them
Cheers Werner
>
> On 03.10.2018 21:08, FLYaDIVE wrote:
>> DJ:
>>
>> The RPi requires 5 VDC so it can not be powered directly from a
>> plane's system, there has to be something to get it down to 5 VDC.
>>
>>
>
Message 15
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| Subject: | Re: PASS-THROUGH CHARGER |
Bob:
On Wednesday, October 3, 2018, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> The RPi requires a power source that is a battery.
>
>
> Can you share a schematic of your present power
> supply and associated conditioning?
>
> Barry - No schematic, it is just a battery.
>
>
> The RPi schematics I've seen all call
> for the legacy 5.0v, digital logic supply
> and the largest power draw I saw for the
> basic Pi board was about 0.7A.
>
> Barry - 0.7Amps would work. I=99m guess at the 375 mA.
>
The voltage range is 4.9 to 5.2 VDC. So I want to be at the upper limit.
>
> There's a host of 5v output step-down converters
> that should let you run the 5v system directly
> from a feeder off the ship's bus . . . no
> battery needed.
>
> Barry - I want a battery as back up if I have to shut down the Master.
> Also the iPad is independent on an internal battery.
> That way I will have total backup and even portability. I have a battery
> system for my Comm radio also.
>
Barry
>
>
> Bob . . .
>
B
B
--
Barry
"Chop'd Liver"
If you wash your hands before you go to the bathroom you may have the
makings of a Crew Chief.
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| Subject: | Re: PASS-THROUGH CHARGER |
I'm needing to do the same for my Stratux. Looking at these converters it seems
they like to belt out the EMI. Have you had any issues with yours?
I found this one that's nice and sealed too:
https://www.amazon.com/dp/B06WVLFYJH/ref=sspa_dk_detail_4?pd_rd_i=B06WVLFYJH&pf_rd_m=ATVPDKIKX0DER&pf_rd_p=f52e26da-1287-4616-824b-efc564ff75a4&pf_rd_r=M3XWWYVBPFRG1XHN219V&pd_rd_wg=Z6c64&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&pd_rd_w=qoucR&pf_rd_i=desktop-dp-sims&pd_rd_r=427a9c19-c751-11e8-8c11-7fd735fac2a8&th=1
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483579#483579
Message 17
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| Subject: | Re: PASS-THROUGH CHARGER |
At 04:30 PM 10/3/2018, you wrote:
>
>I'm needing to do the same for my Stratux. Looking at these
>converters it seems they like to belt out the EMI. Have you had any
>issues with yours?
Unless and until a particular article is TESTED either
in the lab or in practice, any blanket assertions about
EMC are without foundation and may cause one to miss
an opportunity. It is true that many commercial, off the
shelf products are not particularly EMC friendly . . . in
aircraft or elsewhere.
Without running the traps in the EMC lab followed by verification
in the field, off-hand assertions are without foundation.
Given the very low cost of these products, the experiment
is not expensive. In this case, it's not risky either.
As a side note, I observe that the RPi designers seem
rather fond of the SMBJ5.0A transient suppressor as a
hedge against o.v. condition at the input terminals to
their product.
Emacs!
This is a GROSS MISAPPLICATION of these devices. Specifications
for this device tell us . . .
Emacs!
These devices BEGIN to conduct at 6.4 to 7.0 volts.
When subjected to fault currents up to an including the
device's peak power rating of 600W, they may clamp-off
the supply voltage at 9.2 volts or so.
The RPi will be toast at considerably less voltage. The Transorb
is designed to stand off fast rise, relatively short transient
events . . . not hard regulation failures in the input supply.
Further, the equipment they are intended to 'protect' must
stand off an over-shoot greater than or equal to the
clamping voltage of the protective device.
Virtually ALL of the commercial, off-the-shelf down-converter
products have a failure mode that includes application of
ship's bus voltage to the 5.0v output rail . . . with an
impressive peak fault current.
If anyone is interested in applying a COTS down-converter to
their RPi (or any other system with a 5.0v operating bus),
I can offer an ov protection system that far exceeds the
capability of the SMBJ5.0A transient suppressor.
Bob . . .
Message 18
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| Subject: | Re: PASS-THROUGH CHARGER |
Just going off people complaining about it interfering with their radios, figured
I'd ask the guy who's actually using one in his airplane. Hopefully he'll chime
in :)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483583#483583
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| Subject: | Re: PASS-THROUGH CHARGER |
At 06:20 PM 10/3/2018, you wrote:
>
>Just going off people complaining about it interfering with their
>radios, figured I'd ask the guy who's actually using one in his
>airplane. Hopefully he'll chime in :)
>
Good idea . . .
Bob . . .
Message 20
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| Subject: | Re: PASS-THROUGH CHARGER |
unless you have a touch screen and turn off the RPI via the touch
screen, you need some kind of programmable power control. Just turning
off the power to the unit risks corrupting the operating system.
One such programmable control is the Petrockblock Powerblock. There are
others as well just do a search for Raspberry pi power control or power
switch. csmale@bak.rr.com
On 10/03/2018 11:29 AM, FLYaDIVE wrote:
> Electronics should be making our life and flying easier not more
> complicated.
> I have a Raspberry Pi (RPi) configured for ADS-B In and WX.
> It is displaying the information on a iPad and so far it seams to be
> working fine.
> The unit is hooked to an external belly mounted antenna for the ADS-B
> In and an internal antenna for WX.
> At some point I hope to install an external antenna for that also.
> Here is the frustrating part:
> The RPi requires a power source that is a battery. I have battery
> that is suppose to store 12,000 mA.
> Yeah, well, I'll believe that when it runs for 34 Hours without
> requiring a charge.
> So, here is the rub... I am getting tired of climbing in back of the
> plane to Install and Remove the battery for Charging and to remember
> to charg the battery and bring it back to the plane and hook it back
> up... Well, you get the idea!!!
> I would like to hook up a battery, connect it to the planes power
> source, have a means of turning On & Off the battery and turn On & Off
> the RPi [that is easy a DPST switch] and CHARGE the battery while it
> is being used to power the RPi.
> Would anyone know of a PASS-THROUGH charging circuit that would
> accomplish this?
> My idea is also to use a larger battery. Something like a 12 AH / 12
> VDC Battery with a step-down voltage regulator for 5.2 VDC @ 2.1
> Amps. That should give me a current source of about 27 AH and 75
> Hours of operation... Not counting re-charging. ;-)
> The voltage regulator has to be very well regulated in both ripple and
> constant 5.2 VDC, the RPi is a bit sensitive on those things.
> Especially the voltage. I know it does not like a low voltage at all.
>
>
> Thanks Electron Chasers,
> Barry
>
>
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| Subject: | Re: PASS-THROUGH CHARGER |
csmale(at)bak.rr.com wrote:
> unless you have a touch screen and turn off the RPI via the touch screen,
you need some kind of programmable power control. Just turning off the
power to the unit risks corrupting the operating system.
> One such programmable control is the Petrockblock Powerblock. There are
others as well just do a search for Raspberry pi power control or power
switch. csmale@bak.rr.com (csmale@bak.rr.com)
>
>
That's something I hadn't considered, and you're right. But there are a lot of
Stratux users out there, myself included who just plug in and unplug the unit
when we need it. Hasn't been an issue, though I'm not saying it can't be. But
I'll flash another SD card and keep it as a spare now, thanks!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483586#483586
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| Subject: | Re: PASS-THROUGH CHARGER |
The Stratux software has a web interface with a "shutdown" button. I
have a shortcut on my iPad right next to the Foreflight icon which takes
me directly to that web page, and you can click shutdown and wait 30
seconds or so until you cut power.
However, I almost always forget to do that and haven't corrupted the SD
card on the RPi yet. Probably a good idea to carry a spare SD card
already pre-programmed with the Stratux software in case it does happen
though.
-Dj
On 10/3/2018 7:50 PM, chris wrote:
> unless you have a touch screen and turn off the RPI via the touch
> screen, you need some kind of programmable power control. Just turning
> off the power to the unit risks corrupting the operating system.
--
Dj Merrill - N1JOV - EAA Chapter 87
Currently Flying: Glastar
Previously: Cessna 150 - Glasair 1 FT - Grumman AA1B
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| Subject: | Re: PASS-THROUGH CHARGER |
I am not aware of any interference from the one I am using
(https://www.amazon.com/dp/B01511SZYK).
It is located in the tail section far away from my panel radios,
although I do have one COM antenna in the vertical stabilizer which is
about 3 feet behind where the power converter is mounted.
No noticeable interference.
For the cheap $12 price, give it a try and see how it works for you.
-Dj
On 10/3/2018 5:30 PM, BMC_Dave wrote:
> I'm needing to do the same for my Stratux. Looking at these converters it seems
they like to belt out the EMI. Have you had any issues with yours?
--
Dj Merrill - N1JOV - EAA Chapter 87
Currently Flying: Glastar
Previously: Cessna 150 - Glasair 1 FT - Grumman AA1B
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| Subject: | Re: PASS-THROUGH CHARGER |
nuckolls.bob(at)aeroelect wrote:
> If anyone is interested in applying a COTS down-converter to their RPi (or any
other system with a 5.0v operating bus), I can offer an ov protection system
that far exceeds the capability of the SMBJ5.0A transient suppressor.
Bob, I'd be interested to see your OV protection circuit. I don't have an immediate
need for it, but it sounds like something useful to add to my toolbox.
Thanks.
Eric
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483592#483592
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| Subject: | Re: Liberty Field Flyers |
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