Today's Message Index:
----------------------
1. 06:58 AM - Re: TyWraps redux (Mickey Coggins)
2. 04:52 PM - Starting the Engine Reboots the EFIS (Art Zemon)
3. 05:11 PM - Re: Starting the Engine Reboots the EFIS (Sebastien)
4. 05:40 PM - Re: Starting the Engine Reboots the EFIS (Art Zemon)
5. 05:58 PM - Re: Starting the Engine Reboots the EFIS (Brian Lester)
6. 06:00 PM - Re: Starting the Engine Reboots the EFIS (Charlie England)
7. 06:29 PM - Re: Starting the Engine Reboots the EFIS (Stuart Hutchison)
8. 06:49 PM - Re: Starting the Engine Reboots the EFIS (Art Zemon)
9. 07:08 PM - Re: Starting the Engine Reboots the EFIS (Robert McCallum)
10. 07:11 PM - Re: Starting the Engine Reboots the EFIS (user9253)
11. 07:14 PM - Re: Starting the Engine Reboots the EFIS (Tim Olson)
12. 07:41 PM - Re: Starting the Engine Reboots the EFIS (Charlie England)
13. 07:43 PM - Re: Starting the Engine Reboots the EFIS (Charlie England)
14. 08:03 PM - Re: Starting the Engine Reboots the EFIS (C&K)
15. 08:21 PM - Re: Starting the Engine Reboots the EFIS (Rick Beebe)
16. 10:11 PM - Re: Starting the Engine Reboots the EFIS (Charlie England)
Message 1
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| Subject: | Re: TyWraps redux |
Thanks for the kind words - just doing it like Bob taught me via his book
and many PDFs and images.
Mickey Coggins
On Fri, 11 May 2018 at 15:39, FLYaDIVE <flyadive@gmail.com> wrote:
> What do you mean PROBABLY!!!
>
> Certified Planes are Production Planes and do not come anywhere near the
> quality of work done by most Experimental Builders.
>
> Again, GREAT WORK Mickey.
>
> Barry
>
>
> On Thu, May 10, 2018 at 2:26 PM, Bob Verwey <bob.verwey@gmail.com> wrote:
>
>> Nice one! Prolly put some of those certified boys to shame!
>>
>> On Thu, 10 May 2018, 8:21 AM Mickey Coggins <mick-matronics@rv8.ch>
>> wrote:
>>
>>> FWF I used a lot of flat lace along with some adel clamps and I'm really
>>> happy with the way it turned out. I have some pictures here:
>>>
>>> http://www.rv8.ch/fwf-wiring-photos/
>>>
>>> I also did some testing with a good heat gun on the lace to make sure
>>> that I understood how it would behave if it got really hot - I was
>>> impressed. It basically didn't seem to care, and I could not get it to
>>> melt or change state in any way with the heat gun that will cause Tefzel
>>> wiring to finally melt and smoke.
>>>
>>> In parallel, I bought some Nomex lace, which also does not care about
>>> getting cooked by a heat gun, and will probably add this next to the normal
>>> lace in places that might be exposed to additional heat from the exhaust
>>> pipes. Will give some feedback in a few years when I'm finally flying. :)
>>>
>>> Not sure why, but working with the lace was very satisfying.
>>>
>>> Mickey Coggins
>>>
>>>
>>> On Wed, 9 May 2018 at 18:14, FLYaDIVE <flyadive@gmail.com> wrote:
>>>
>>>> Good point Bob...
>>>>
>>>> In general BLACK Ty-Wraps are UV and Ozone proof. The white ones
>>>> become brittle with time and exposure.
>>>> SOME - not all colored Ty-Wraps may also work.
>>>>
>>>> One might even find notes on the Ty-Wrap packaging as to UV & Ozone
>>>> resistant.
>>>>
>>>> Barry
>>>>
>>>> On Tue, May 8, 2018 at 4:32 PM, Robert L. Nuckolls, III <
>>>> nuckolls.bob@aeroelectric.com> wrote:
>>>>
>>>>> nuckolls.bob@aeroelectric.com>
>>>>>
>>>>>
>>>>>
>>>>> In a recent thread, TyWraps were discussed as a solution
>>>>> for wire bundle management. We had some discussions on
>>>>> these products about ten years back . . .
>>>>>
>>>>> In years since, I've had occasion to throw out stocks
>>>>> of unused TyWraps given that they had become brittle with
>>>>> age . . . the buckles would snap off in the ordinary process
>>>>> of applying the wrap.
>>>>>
>>>>> Be aware that not all that is plastic is Nylon 6,6. Evolved
>>>>> over the last 80+ years by DuPont. This material and its
>>>>> close cousins have found their way into all manner of component,
>>>>> many of which perform in under-hood environment of automobiles.
>>>>>
>>>>> When purchasing these critters, look for a 6-6, 6/6, 66 or even
>>>>> a 6,6 description of the nylon. The last time I was in Harbor
>>>>> Freight, many of their offerings bore such markings . . . but
>>>>> some did not . . . especially the smaller ones in assorted colors.
>>>>>
>>>>> All the wraps I pitched a few years ago were smaller sizes
>>>>> in various colors. Some had been in my Dad's inventory for untold
>>>>> years and were literally falling apart.
>>>>>
>>>>> My favorite bundle security uses Dacron flat lace applied
>>>>> like so . . .
>>>>>
>>>>> https://goo.gl/H3z1EQ
>>>>>
>>>>> Did a job for a rancher friend yesterday where the wiring was
>>>>> installed and initially held in place with some TyWraps he had
>>>>> laying around . . . after it was up and running, I dug out the
>>>>> roll of flat lace and installed a wrap adjacent to each of the
>>>>> TyWraps. Those plastic thingies MIGHT fall off in a few years
>>>>> but I'm betting the string will still be on duty.
>>>>>
>>>>>
>>>>> Bob . . .
>>>>> ==========
>>>>> -
>>>>> Electric-List" rel="noreferrer" target="_blank">
>>>>> http://www.matronics.com/Navigator?AeroElectric-List
>>>>> ==========
>>>>> FORUMS -
>>>>> eferrer" target="_blank">http://forums.matronics.com
>>>>> ==========
>>>>> WIKI -
>>>>> errer" target="_blank">http://wiki.matronics.com
>>>>> ==========
>>>>> b Site -
>>>>> -Matt Dralle, List Admin.
>>>>> rel="noreferrer" target="_blank">http://www.matronics.com/contribution
>>>>> ==========
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>
Message 2
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| Subject: | Starting the Engine Reboots the EFIS |
=8B=8B
Folks,
I am *finally* to the point on my project of starting the engine. When I
first engage the starter, voltage drops so low that my EFIS reboots. The
EFIS immediately reboots, less than 1 second later, but it takes several
seconds for the engine instruments to come back online.
It is a 12 volt system. During engine start, the equipment is drawing about
5 amps (other than the starter motor). I need about 9 volts to keep the
EFIS from rebooting.
I am using figure Z-12 with very minor modifications: replaced the ammeter
shunts with hall effect sensors and rearranged the switches a bit. You can
see my modified diagram here: engine.pdf
<https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?usp
=sharing>
What would be the simplest way to fix this issue?
-- Art Z.
--
https://CheerfulCurmudgeon.com/
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Message 3
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Battery for the EFIS? Does MGL make a backup battery for your engine
monitor?
On Mon, May 14, 2018 at 4:51 PM, Art Zemon <art@zemon.name> wrote:
> =8B=8B
> Folks,
>
> I am *finally* to the point on my project of starting the engine. When I
> first engage the starter, voltage drops so low that my EFIS reboots. The
> EFIS immediately reboots, less than 1 second later, but it takes several
> seconds for the engine instruments to come back online.
>
> It is a 12 volt system. During engine start, the equipment is drawing
> about 5 amps (other than the starter motor). I need about 9 volts to keep
> the EFIS from rebooting.
>
> I am using figure Z-12 with very minor modifications: replaced the ammete
r
> shunts with hall effect sensors and rearranged the switches a bit. You ca
n
> see my modified diagram here: engine.pdf
> <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?u
sp=sharing>
>
> What would be the simplest way to fix this issue?
>
> -- Art Z.
>
> --
> https://CheerfulCurmudgeon.com/
>
> *"If I am not for myself, who is for me? And if I am only for myself, wha
t
> am I? And if not now, when?" Hillel*
>
Message 4
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Sebastien,
MGL sells the AvioGuard, a DC-to-DC converting power supply for isolating
the avionics from the rest of the aircraft system. It supports a backup
battery. Cost would be $450 + the battery.
I am hoping for a less expensive solution.
-- Art Z.
On Mon, May 14, 2018 at 7:09 PM, Sebastien <cluros@gmail.com> wrote:
> Battery for the EFIS? Does MGL make a backup battery for your engine
> monitor?
>
> On Mon, May 14, 2018 at 4:51 PM, Art Zemon <art@zemon.name> wrote:
>
>> =8B=8B
>> Folks,
>>
>> I am *finally* to the point on my project of starting the engine. When I
>> first engage the starter, voltage drops so low that my EFIS reboots. The
>> EFIS immediately reboots, less than 1 second later, but it takes several
>> seconds for the engine instruments to come back online.
>>
>> It is a 12 volt system. During engine start, the equipment is drawing
>> about 5 amps (other than the starter motor). I need about 9 volts to kee
p
>> the EFIS from rebooting.
>>
>> I am using figure Z-12 with very minor modifications: replaced the
>> ammeter shunts with hall effect sensors and rearranged the switches a bi
t.
>> You can see my modified diagram here: engine.pdf
>> <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?
usp=sharing>
>>
>> What would be the simplest way to fix this issue?
>>
>
--
https://CheerfulCurmudgeon.com/
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Message 5
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| Subject: | Re: Starting the Engine Reboots the EFIS |
What about something like this?
http://www.tcwtech.com/ibbs_integrated_backup_battery_system_3ah_6ah.html
As long as the rest of your system meets your needs this will at least fix
the voltage drop issue for the EFIS.
On Mon, May 14, 2018 at 8:45 PM Art Zemon <art@zemon.name> wrote:
> Sebastien,
>
> MGL sells the AvioGuard, a DC-to-DC converting power supply for isolating
> the avionics from the rest of the aircraft system. It supports a backup
> battery. Cost would be $450 + the battery.
>
> I am hoping for a less expensive solution.
>
> -- Art Z.
>
>
> On Mon, May 14, 2018 at 7:09 PM, Sebastien <cluros@gmail.com> wrote:
>
>> Battery for the EFIS? Does MGL make a backup battery for your engine
>> monitor?
>>
>> On Mon, May 14, 2018 at 4:51 PM, Art Zemon <art@zemon.name> wrote:
>>
>>> =8B=8B
>>> Folks,
>>>
>>> I am *finally* to the point on my project of starting the engine. When
>>> I first engage the starter, voltage drops so low that my EFIS reboots.
The
>>> EFIS immediately reboots, less than 1 second later, but it takes severa
l
>>> seconds for the engine instruments to come back online.
>>>
>>> It is a 12 volt system. During engine start, the equipment is drawing
>>> about 5 amps (other than the starter motor). I need about 9 volts to ke
ep
>>> the EFIS from rebooting.
>>>
>>> I am using figure Z-12 with very minor modifications: replaced the
>>> ammeter shunts with hall effect sensors and rearranged the switches a b
it.
>>> You can see my modified diagram here: engine.pdf
>>> <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view
?usp=sharing>
>>>
>>> What would be the simplest way to fix this issue?
>>>
>>
>
> --
> https://CheerfulCurmudgeon.com/
>
> *"If I am not for myself, who is for me? And if I am only for myself, wha
t
> am I? And if not now, when?" Hillel*
>
Message 6
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Ebay for a 'boot/buck switching regulator' sized for your needs (likely way
less than$30), and an aux battery sized the same way=2E Create a 'mini' bu
s for the items you want to isolate=2E
If all you want is brownout protect
ion, a little 2 or 3 AH battery shoul be more than enough=2E
There are oth
er commercial products available that do the same thing, but obviously you
will pay more=2E
=81=A3Charlie=8B
On May 14, 2018, 7:45 PM, at 7
:45 PM, Art Zemon <art@zemon=2Ename> wrote:
>Sebastien,
>
>MGL sells the Av
ioGuard, a DC-to-DC converting power supply for
>isolating
>the avionics fr
om the rest of the aircraft system=2E It supports a backup
>battery=2E Cost
would be $450 + the battery=2E
>
>I am hoping for a less expensive solutio
n=2E
>
> -- Art Z=2E
>
>
>On Mon, May 14, 2018 at 7:09 PM, Sebastien <cl
uros@gmail=2Ecom> wrote:
>
>> Battery for the EFIS? Does MGL make a backup
battery for your engine
>> monitor?
>>
>> On Mon, May 14, 2018 at 4:51 PM,
Art Zemon <art@zemon=2Ename> wrote:
>>
>>> =8B=8B
>>> Folks,
>>
>
>>> I am *finally* to the point on my project of starting the engine=2E
>
When I
>>> first engage the starter, voltage drops so low that my EFIS rebo
ots=2E
>The
>>> EFIS immediately reboots, less than 1 second later, but it
takes
>several
>>> seconds for the engine instruments to come back online
=2E
>>>
>>> It is a 12 volt system=2E During engine start, the equipment is
>drawing
>>> about 5 amps (other than the starter motor)=2E I need about 9
volts to
>keep
>>> the EFIS from rebooting=2E
>>>
>>> I am using figure Z-
12 with very minor modifications: replaced the
>>> ammeter shunts with hall
effect sensors and rearranged the switches
>a bit=2E
>>> You can see my mo
dified diagram here: engine=2Epdf
>>>
><https://drive=2Egoogle=2Ecom/file/d
/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?usp=sharing>
>>>
>>> What would b
e the simplest way to fix this issue?
>>>
>>
>
>--
>https://CheerfulCurmud
geon=2Ecom/
>
>*"If I am not for myself, who is for me? And if I am only fo
r myself,
>what
>am I? And if not now, when?" Hillel*
Message 7
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| Subject: | Re: Starting the Engine Reboots the EFIS |
I can=99t help wondering if your primary battery is aged and below
par Art, but I second the IBBS from TCW Tech.
Installed in parallel with a decent Schottky diode (bought mine from
Eric at http://periheliondesign.com/ <http://periheliondesign.com/>)
it=99s a simple way to overcome voltage sag on the bus during
start and provides alternate power (hardwired to essential items of your
choosing) in an emergency.
Cheers, Stu
> On 15 May 2018, at 10:56, Brian Lester <brian.lester@gmail.com> wrote:
>
> What about something like this?
>
http://www.tcwtech.com/ibbs_integrated_backup_battery_system_3ah_6ah.html
<http://www.tcwtech.com/ibbs_integrated_backup_battery_system_3ah_6ah.html
>
>
> As long as the rest of your system meets your needs this will at least
fix the voltage drop issue for the EFIS.
>
>
> On Mon, May 14, 2018 at 8:45 PM Art Zemon <art@zemon.name
<mailto:art@zemon.name>> wrote:
> Sebastien,
>
> MGL sells the AvioGuard, a DC-to-DC converting power supply for
isolating the avionics from the rest of the aircraft system. It supports
a backup battery. Cost would be $450 + the battery.
>
> I am hoping for a less expensive solution.
>
> -- Art Z.
>
>
> On Mon, May 14, 2018 at 7:09 PM, Sebastien <cluros@gmail.com
<mailto:cluros@gmail.com>> wrote:
> Battery for the EFIS? Does MGL make a backup battery for your engine
monitor?
>
> On Mon, May 14, 2018 at 4:51 PM, Art Zemon <art@zemon.name
<mailto:art@zemon.name>> wrote:
> =8B=8B
> Folks,
>
> I am finally to the point on my project of starting the engine. When I
first engage the starter, voltage drops so low that my EFIS reboots. The
EFIS immediately reboots, less than 1 second later, but it takes several
seconds for the engine instruments to come back online.
>
> It is a 12 volt system. During engine start, the equipment is drawing
about 5 amps (other than the starter motor). I need about 9 volts to
keep the EFIS from rebooting.
>
> I am using figure Z-12 with very minor modifications: replaced the
ammeter shunts with hall effect sensors and rearranged the switches a
bit. You can see my modified diagram here: engine.pdf
<https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?us
p=sharing>
>
> What would be the simplest way to fix this issue?
>
>
> --
> https://CheerfulCurmudgeon.com/ <https://cheerfulcurmudgeon.com/>
>
> "If I am not for myself, who is for me? And if I am only for myself,
what am I? And if not now, when?" Hillel
Message 8
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Charlie,
That sounds like exactly what I need: brownout protection for one to two
seconds. Is this the sort of regulator that I need?
https://www.ebay.com/itm/DROK-High-Efficiency-Regulator-DC-4-5-30V-to-0-8-2
8V-12A-Buck-Converter-Const/152990560495
-- Art Z.
On Mon, May 14, 2018 at 7:59 PM, Charlie England <ceengland7@gmail.com>
wrote:
> Ebay for a 'boot/buck switching regulator' sized for your needs (likely
> way less than$30), and an aux battery sized the same way. Create a 'mini'
> bus for the items you want to isolate.
>
> If all you want is brownout protection, a little 2 or 3 AH battery shoul
> be more than enough.
>
> There are other commercial products available that do the same thing, but
> obviously you will pay more.
>
> Charlie
> On May 14, 2018, at 7:45 PM, Art Zemon <art@zemon.name> wrote:
>>
>> Sebastien,
>>
>> MGL sells the AvioGuard, a DC-to-DC converting power supply for isolatin
g
>> the avionics from the rest of the aircraft system. It supports a backup
>> battery. Cost would be $450 + the battery.
>>
>> I am hoping for a less expensive solution.
>>
>> -- Art Z.
>>
>>
>> On Mon, May 14, 2018 at 7:09 PM, Sebastien <cluros@gmail.com> wrote:
>>
>>> Battery for the EFIS? Does MGL make a backup battery for your engine
>>> monitor?
>>>
>>> On Mon, May 14, 2018 at 4:51 PM, Art Zemon <art@zemon.name> wrote:
>>>
>>>> =8B=8B
>>>> Folks,
>>>>
>>>> I am *finally* to the point on my project of starting the engine. When
>>>> I first engage the starter, voltage drops so low that my EFIS reboots.
The
>>>> EFIS immediately reboots, less than 1 second later, but it takes sever
al
>>>> seconds for the engine instruments to come back online.
>>>>
>>>> It is a 12 volt system. During engine start, the equipment is drawing
>>>> about 5 amps (other than the starter motor). I need about 9 volts to k
eep
>>>> the EFIS from rebooting.
>>>>
>>>> I am using figure Z-12 with very minor modifications: replaced the
>>>> ammeter shunts with hall effect sensors and rearranged the switches a
bit.
>>>> You can see my modified diagram here: engine.pdf
>>>> <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/vie
w?usp=sharing>
>>>>
>>>> What would be the simplest way to fix this issue?
>>>>
>>>
>>
>> --
>> https://CheerfulCurmudgeon.com/
>>
>> *"If I am not for myself, who is for me? And if I am only for myself,
>> what am I? And if not now, when?" Hillel*
>>
>
--
https://CheerfulCurmudgeon.com/
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Message 9
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Read the specifications carefully as the following statement from their specs
might be an issue.
"Please note: the negative of input and output wiring cannot be common ground."
Bob McC
> ---------- Original Message ----------
> From: Art Zemon <art@zemon.name>
> Date: May 14, 2018 at 9:47 PM
>
> Charlie,
>
> That sounds like exactly what I need: brownout protection for one to two
> seconds. Is this the sort of regulator that I need?
> https://www.ebay.com/itm/DROK-High-Efficiency-Regulator-DC-4-5-30V-to-0-8-28V-12A-Buck-Converter-Const/152990560495
>
> -- Art Z.
>
>
> On Mon, May 14, 2018 at 7:59 PM, Charlie England < ceengland7@gmail.com
> <mailto:ceengland7@gmail.com> > wrote:
>
> > > Ebay for a 'boot/buck switching regulator' sized for your
> > > needs (likely way less than$30), and an aux battery sized the same
> > > way. Create a 'mini' bus for the items you want to isolate.
> >
> > If all you want is brownout protection, a little 2 or 3 AH battery
> > shoul be more than enough.
> >
> > There are other commercial products available that do the same
> > thing, but obviously you will pay more.
> >
> > Charlie
> > On May 14, 2018, at 7:45 PM, Art Zemon < art@zemon.name
> > <mailto:art@zemon.name> > wrote:
> >
> > > > > Sebastien,
> > >
> > > MGL sells the AvioGuard, a DC-to-DC converting power supply
> > > for isolating the avionics from the rest of the aircraft system. It
> > > supports a backup battery. Cost would be $450 + the battery.
> > >
> > > I am hoping for a less expensive solution.
> > >
> > > -- Art Z.
> > >
> > >
> > > On Mon, May 14, 2018 at 7:09 PM, Sebastien < cluros@gmail.com
> > > <mailto:cluros@gmail.com> > wrote:
> > >
> > > > > > > Battery for the EFIS? Does MGL
> > > > > > > make a backup battery for your engine monitor?
> > > >
> > > > On Mon, May 14, 2018 at 4:51 PM, Art Zemon <
> > > > art@zemon.name <mailto:art@zemon.name> > wrote:
> > > >
> > > > > > > > > Folks,
> > > > >
> > > > > I am finally to the point on my project of
> > > > > starting the engine. When I first engage the starter, voltage drops so
> > > > > low that my EFIS reboots. The EFIS immediately reboots, less than 1
> > > > > second later, but it takes several seconds for the engine instruments
> > > > > to come back online.
> > > > >
> > > > > It is a 12 volt system. During engine start, the
> > > > > equipment is drawing about 5 amps (other than the starter motor). I
> > > > > need about 9 volts to keep the EFIS from rebooting.
> > > > >
> > > > > I am using figure Z-12 with very minor
> > > > > modifications: replaced the ammeter shunts with hall effect sensors
> > > > > and rearranged the switches a bit. You can see my modified diagram
> > > > > here: engine.pdf
> > > > > <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?usp=sharing>
> > > > >
> > > > > What would be the simplest way to fix this issue?
> > > > >
> > > > > > > > >
> > > > > > >
> > >
> > > --
> > > https://CheerfulCurmudgeon.com/
> > > <https://CheerfulCurmudgeon.com/>
> > >
> > > "If I am not for myself, who is for me? And if I am only for
> > > myself, what am I? And if not now, when?" Hillel
> > >
> > > > >
> > >
>
>
> --
> https://CheerfulCurmudgeon.com/
>
> "If I am not for myself, who is for me? And if I am only for myself, what
> am I? And if not now, when?" Hillel
>
Message 10
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Here is circuit. A disadvantage is 1/2 volt drop across the Schottky diode.
But if the aircraft electrical system voltage is 14.2 or higher, it should be OK.
Diode part number: 747-DSA300i45NA
If the voltage drop across the diode is not desired, normally closed relay
contacts could be connected in parallel with the diode. Energize the relay
with the start push button.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=480130#480130
Attachments:
http://forums.matronics.com//files/brownout_bat_efis_135.jpg
Message 11
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Check out TCWTechs stuff. They have both backup batteries, and
a power stabilizer that they offer that would do the trick.
http://www.tcwtech.com/
Tim
On 5/14/2018 7:38 PM, Art Zemon wrote:
> Sebastien,
>
> MGL sells the AvioGuard, a DC-to-DC converting power supply for
> isolating the avionics from the rest of the aircraft system. It supports
> a backup battery. Cost would be $450 + the battery.
>
> I am hoping for a less expensive solution.
>
> -- Art Z.
>
>
> On Mon, May 14, 2018 at 7:09 PM, Sebastien <cluros@gmail.com
> <mailto:cluros@gmail.com>> wrote:
>
> Battery for the EFIS? Does MGL make a backup battery for your engine
> monitor?
>
> On Mon, May 14, 2018 at 4:51 PM, Art Zemon <art@zemon.name
> <mailto:art@zemon.name>> wrote:
>
>
> Folks,
>
> I am /finally/to the point on my project of starting the
> engine. When I first engage the starter, voltage drops so low
> that my EFIS reboots. The EFIS immediately reboots, less than 1
> second later, but it takes several seconds for the engine
> instruments to come back online.
>
> It is a 12 volt system. During engine start, the equipment is
> drawing about 5 amps (other than the starter motor). I need
> about 9 volts to keep the EFIS from rebooting.
>
> I am using figure Z-12 with very minor modifications: replaced
> the ammeter shunts with hall effect sensors and rearranged the
> switches a bit. You can see my modified diagram here: engine.pdf
> <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?usp=sharing>
>
> What would be the simplest way to fix this issue?
>
>
>
> --
> https://CheerfulCurmudgeon.com/
>
> /"If I am not for myself, who is for me? And if I am only for myself,
> what am I? And if not now, when?" Hillel/
Message 12
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| Subject: | Re: Starting the Engine Reboots the EFIS |
That one appears to be buck only=2E Should still work fine if you only expe
ct brownout protection=2E It can't do full charge voltage, but can likely d
o around 13-13=2E5v when fed 14=2E5 by the alternator=2E
But if you're do
ing that, it would be simpler and cheaper to just use a fat schottsky diode
=2E Again, ebay for the best price=2E
=81=A3Charlie=8B
On May 14
, 2018, 8:53 PM, at 8:53 PM, Art Zemon <art@zemon=2Ename> wrote:
>Charlie,
>
>That sounds like exactly what I need: brownout protection for one to
>tw
o
>seconds=2E Is this the sort of regulator that I need?
>https://www=2Eeba
y=2Ecom/itm/DROK-High-Efficiency-Regulator-DC-4-5-30V-to-0-8-28V-12A-Buck-C
onverter-Const/152990560495
>
> -- Art Z=2E
>
>
>On Mon, May 14, 2018 at
7:59 PM, Charlie England <ceengland7@gmail=2Ecom>
>wrote:
>
>> Ebay for a
'boot/buck switching regulator' sized for your needs
>(likely
>> way less t
han$30), and an aux battery sized the same way=2E Create a
>'mini'
>> bus f
or the items you want to isolate=2E
>>
>> If all you want is brownout prote
ction, a little 2 or 3 AH battery
>shoul
>> be more than enough=2E
>>
>> Th
ere are other commercial products available that do the same thing,
>but
>>
obviously you will pay more=2E
>>
>> Charlie
>> On May 14, 2018, at 7:45 P
M, Art Zemon <art@zemon=2Ename> wrote:
>>>
>>> Sebastien,
>>>
>>> MGL sells
the AvioGuard, a DC-to-DC converting power supply for
>isolating
>>> the a
vionics from the rest of the aircraft system=2E It supports a
>backup
>>> b
attery=2E Cost would be $450 + the battery=2E
>>>
>>> I am hoping for a les
s expensive solution=2E
>>>
>>> -- Art Z=2E
>>>
>>>
>>> On Mon, May 14,
2018 at 7:09 PM, Sebastien <cluros@gmail=2Ecom> wrote:
>>>
>>>> Battery fo
r the EFIS? Does MGL make a backup battery for your
>engine
>>>> monitor?
>
>>>
>>>> On Mon, May 14, 2018 at 4:51 PM, Art Zemon <art@zemon=2Ename> wrot
e:
>>>>
>>>>> =8B=8B
>>>>> Folks,
>>>>>
>>>>> I am *finally* to
the point on my project of starting the engine=2E
>When
>>>>> I first enga
ge the starter, voltage drops so low that my EFIS
>reboots=2E The
>>>>> EFI
S immediately reboots, less than 1 second later, but it takes
>several
>>>>
> seconds for the engine instruments to come back online=2E
>>>>>
>>>>> It
is a 12 volt system=2E During engine start, the equipment is
>drawing
>>>>>
about 5 amps (other than the starter motor)=2E I need about 9 volts
>to ke
ep
>>>>> the EFIS from rebooting=2E
>>>>>
>>>>> I am using figure Z-12 with
very minor modifications: replaced the
>>>>> ammeter shunts with hall effe
ct sensors and rearranged the
>switches a bit=2E
>>>>> You can see my modif
ied diagram here: engine=2Epdf
>>>>>
><https://drive=2Egoogle=2Ecom/file/d/
12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?usp=sharing>
>>>>>
>>>>> What woul
d be the simplest way to fix this issue?
>>>>>
>>>>
>>>
>>> --
>>> https://
CheerfulCurmudgeon=2Ecom/
>>>
>>> *"If I am not for myself, who is for me?
And if I am only for
>myself,
>>> what am I? And if not now, when?" Hillel*
>>>
>>
>
>
>--
>https://CheerfulCurmudgeon=2Ecom/
>
>*"If I am not for my
self, who is for me? And if I am only for myself,
>what
>am I? And if not n
ow, when?" Hillel*
Message 13
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Ooh, good catch!
=81=A3Charlie=8B
On May 14, 2018, 9:13 PM, at 9
:13 PM, Robert McCallum <robert=2Emccallum2@sympatico=2Eca> wrote:
>Read th
e specifications carefully as the following statement from their
>specs
>mi
ght be an issue=2E
>
>"Please note: the negative of input and output wiring
cannot be common
>ground=2E"
>
>Bob McC
>
>> ---------- Original Message -
---------
>> From: Art Zemon <art@zemon=2Ename>
>> Date: May 14, 20
18 at 9:47 PM
>>
>> Charlie,
>>
>> That sounds like exactly what
I need: brownout protection for one
>to two
>> seconds=2E Is this the sort
of regulator that I need?
>>
>https://www=2Eebay=2Ecom/itm/DROK-High-Effici
ency-Regulator-DC-4-5-30V-to-0-8-28V-12A-Buck-Converter-Const/152990560495
>>
>> -- Art Z=2E
>>
>>
>> On Mon, May 14, 2018 at 7:59 PM, Char
lie England <
>ceengland7@gmail=2Ecom
>> <mailto:ceengland7@gmail=2Ecom> >
wrote:
>>
>> > > Ebay for a 'boot/buck switching regulator
' sized
>for your
>> > > needs (likely way less than$30), and an au
x battery sized
>the same
>> > > way=2E Create a 'mini' bus for the
items you want to
>isolate=2E
>> >
>> > If all you want is browno
ut protection, a little 2 or 3 AH
>battery
>> > shoul be more than enough
=2E
>> >
>> > There are other commercial products available that d
o the
>same
>> > thing, but obviously you will pay more=2E
>> >
>> >
Charlie
>> > On May 14, 2018, at 7:45 PM, Art Zemon < art@zemon
=2Ename
>> > <mailto:art@zemon=2Ename> > wrote:
>> >
>> > > >
> Sebastien,
>> > >
>> > > MGL sells the AvioGuard
, a DC-to-DC converting power
>supply
>> > > for isolating the avionics fro
m the rest of the aircraft system=2E
>It
>> > > supports a backup battery
=2E Cost would be $450 + the battery=2E
>> > >
>> > > I am hop
ing for a less expensive solution=2E
>> > >
>> > > -- Art Z=2E
>> > >
>> > >
>> > > On Mon, May 14, 2018 at 7:09 PM, Sebast
ien <
>cluros@gmail=2Ecom
>> > > <mailto:cluros@gmail=2Ecom> > wrote:
>> >
>
>> > > > > > > Battery for the EFIS?
>Do
es MGL
>> > > > > > > make a backup battery for your engine
>monitor?
>> > > >
>> > > > On Mon, May 14, 2018 at 4:51
PM, Art Zemon <
>> > > > art@zemon=2Ename <mailto:art@zemon=2Ename> > wrote
:
>> > > >
>> > > > > > > > > Folk
s,
>> > > > >
>> > > > > I am finally to the point on
my project
>of
>> > > > > starting the engine=2E When I first engage the st
arter, voltage
>drops so
>> > > > > low that my EFIS reboots=2E The EFIS im
mediately reboots, less
>than 1
>> > > > > second later, but it takes sever
al seconds for the engine
>instruments
>> > > > > to come back online=2E
>>
> > > >
>> > > > > It is a 12 volt system=2E During e
ngine
>start, the
>> > > > > equipment is drawing about 5 amps (other than
the starter
>motor)=2E I
>> > > > > need about 9 volts to keep the EFIS fro
m rebooting=2E
>> > > > >
>> > > > > I am using figure
Z-12 with very minor
>> > > > > modifications: replaced the ammeter shunts
with hall effect
>sensors
>> > > > > and rearranged the switches a bit=2E
You can see my modified
>diagram
>> > > > > here: engine=2Epdf
>> > > > >
>
<https://drive=2Egoogle=2Ecom/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view
?usp=sharing>
>> > > > >
>> > > > > What would be th
e simplest way to fix
>this issue?
>> > > > >
>> > > > > >
> > >
>> > > > > > >
>> > >
>> > > --
>> > >
https://CheerfulCurmudgeon=2Ecom/
>> > > <https://CheerfulCurmudg
eon=2Ecom/>
>> > >
>> > > "If I am not for myself, who is for
me? And if I am
>only for
>> > > myself, what am I? And if not now, when?"
Hillel
>> > >
>> > > > >
>> > >
>>
>>
>> --
>> htt
ps://CheerfulCurmudgeon=2Ecom/
>>
>> "If I am not for myself, who is f
or me? And if I am only for
>myself, what
>> am I? And if not now, when?" H
illel
>>
>
>
>
Message 14
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Don't you want a boost converter instead of a buck converter?
Ken
On 14/05/2018 10:41 PM, Charlie England wrote:
> Ooh, good catch!
>
> Charlie
> On May 14, 2018, at 9:13 PM, Robert McCallum
> <robert.mccallum2@sympatico.ca <mailto:robert.mccallum2@sympatico.ca>>
> wrote:
>
> Read the specifications carefully as the following statement from
> their specs might be an issue.
>
> "Please note: the negative of input and output wiring cannot be
> common ground."
>
> Bob McC
>
>> ---------- Original Message ----------
>> From: Art Zemon <art@zemon.name>
>> Date: May 14, 2018 at 9:47 PM
>>
>> Charlie,
>>
>> That sounds like exactly what I need: brownout protection for one
>> to two seconds. Is this the sort of regulator that I need?
>> https://www.ebay.com/itm/DROK-High-Efficiency-Regulator-DC-4-5-30V-to-0-8-28V-12A-Buck-Converter-Const/152990560495
>>
>>
>> -- Art Z.
>>
>>
>> On Mon, May 14, 2018 at 7:59 PM, Charlie England <
>> ceengland7@gmail.com <mailto:ceengland7@gmail.com>> wrote:
>>
>> Ebay for a 'boot/buck switching regulator' sized for your
>> needs (likely way less than$30), and an aux battery sized the
>> same way. Create a 'mini' bus for the items you want to isolate.
>>
>> If all you want is brownout protection, a little 2 or 3 AH
>> battery shoul be more than enough.
>>
>> There are other commercial products available that do the
>> same thing, but obviously you will pay more.
>>
>> Charlie
>> On May 14, 2018, at 7:45 PM, Art Zemon < art@zemon.name
>> <mailto:art@zemon.name>> wrote:
>>
>> Sebastien,
>>
>> MGL sells the AvioGuard, a DC-to-DC converting power
>> supply for isolating the avionics from the rest of the
>> aircraft system. It supports a backup battery. Cost would
>> be $450 + the battery.
>>
>> I am hoping for a less expensive solution.
>>
>> -- Art Z.
>>
>>
>> On Mon, May 14, 2018 at 7:09 PM, Sebastien <
>> cluros@gmail.com <mailto:cluros@gmail.com>> wrote:
>>
>> Battery for the EFIS? Does MGL make a backup battery
>> for your engine monitor?
>>
>> On Mon, May 14, 2018 at 4:51 PM, Art Zemon <
>> art@zemon.name <mailto:art@zemon.name>> wrote:
>>
>>
>> Folks,
>>
>> I am /finally/ to the point on my project of
>> starting the engine. When I first engage the
>> starter, voltage drops so low that my EFIS
>> reboots. The EFIS immediately reboots, less than
>> 1 second later, but it takes several seconds for
>> the engine instruments to come back online.
>>
>> It is a 12 volt system. During engine start, the
>> equipment is drawing about 5 amps (other than the
>> starter motor). I need about 9 volts to keep the
>> EFIS from rebooting.
>>
>> I am using figure Z-12 with very minor
>> modifications: replaced the ammeter shunts with
>> hall effect sensors and rearranged the switches a
>> bit. You can see my modified diagram here:
>> engine.pdf
>> <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?usp=sharing>
>>
>>
>> What would be the simplest way to fix this issue?
>>
>>
>>
>> --
>> https://CheerfulCurmudgeon.com/
>> <https://CheerfulCurmudgeon.com/>
>>
>> /"If I am not for myself, who is for me? And if I am only
>> for myself, what am I? And if not now, when?" Hillel/
>>
>>
>>
>>
>> --
>> https://CheerfulCurmudgeon.com/
>>
>> /"If I am not for myself, who is for me? And if I am only for
>> myself, what am I? And if not now, when?" Hillel/
>
>
Message 15
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| Subject: | Re: Starting the Engine Reboots the EFIS |
Eric Page, who's on this list, created a device to protect against this
using a large capacitor. He modified an earlier design by Eric Jones. I
bought one from him. It works great on my bench. Should be going in the
plane in the next week or so. His original email is quoted below:
--Rick
Im starting a new thread on this topic in case anyone who might be
interested missed the recent discussion, here:
http://forum.matronics.com/viewtopic.php?t=16768062
To recap, Ive adapted Eric Jones design for a voltage slump
eliminator (a device to prevent EFIS/EMS brownout/reboot during engine
start) and designed a circuit board for it. The schematic (.PDF) is here:
http://forum.matronics.com/download.php?id=44878
An archive (.ZIP) containing the full design files can be downloaded here:
https://preview.tinyurl.com/yajod9m6
So far one member of the forum has expressed a desire for me to build
one of these for him, so Ive ordered a batch of circuit boards. If
anyone else wants a complete unit, please let me know so I can order all
of the components at once. You can reply to this thread or contact me
directly.
The cost should be about $35 each, plus postage to your address. Ill
send a PayPal invoice, along with copies of my receipts, once I know the
exact amount for each device and I have them ready to mail.
Im happy to part with bare circuit boards as well; again, for my cost
($0.55/ea) plus postage.
Eric
P.S. For anyone seeing this in the future, you can contact me directly
to see if I have any circuit boards on hand. The PDF schematic file
contains a link to Digi-Key that will load a shopping cart with all
necessary components.
On 05/14/2018 07:51 PM, Art Zemon wrote:
>
> Folks,
>
> I am /finally/to the point on my project of starting the engine. When I
> first engage the starter, voltage drops so low that my EFIS reboots. The
> EFIS immediately reboots, less than 1 second later, but it takes several
> seconds for the engine instruments to come back online.
>
> It is a 12 volt system. During engine start, the equipment is drawing
> about 5 amps (other than the starter motor). I need about 9 volts to
> keep the EFIS from rebooting.
>
> I am using figure Z-12 with very minor modifications: replaced the
> ammeter shunts with hall effect sensors and rearranged the switches a
> bit. You can see my modified diagram here: engine.pdf
> <https://drive.google.com/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/view?usp=sharing>
>
> What would be the simplest way to fix this issue?
>
> -- Art Z.
>
> --
> https://CheerfulCurmudgeon.com/
>
> /"If I am not for myself, who is for me? And if I am only for myself,
> what am I? And if not now, when?" Hillel/
Message 16
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|
| Subject: | Re: Starting the Engine Reboots the EFIS |
See my 1st answer=2E :-)
Boost only woul not be a good idea; that implies
a set point higher than alternator voltage=2E
=81=A3Charlie=8B
O
n May 14, 2018, 10:07 PM, at 10:07 PM, C&K <yellowduckduo@gmail=2Ecom> wrot
e:
>
>
>Don't you want a boost converter instead of a buck converter?
>Ken
>
>
On 14/05/2018 10:41 PM, Charlie England wrote:
>> Ooh, good catch!
>>
>> Ch
arlie
>> On May 14, 2018, at 9:13 PM, Robert McCallum
>> <robert=2Emccallu
m2@sympatico=2Eca
><mailto:robert=2Emccallum2@sympatico=2Eca>>
>> wrote:
>
>
>> Read the specifications carefully as the following statement from
>> their specs might be an issue=2E
>>
>> "Please note: the negativ
e of input and output wiring cannot be
>> common ground=2E"
>>
>> B
ob McC
>>
>>> ---------- Original Message ----------
>>> From: Art
Zemon <art@zemon=2Ename>
>>> Date: May 14, 2018 at 9:47 PM
>>>
>>>
Charlie,
>>>
>>> That sounds like exactly what I need: brownout protect
ion for
>one
>>> to two seconds=2E Is this the sort of regulator that I
need?
>>>
>https://www=2Eebay=2Ecom/itm/DROK-High-Efficiency-Regulator
-DC-4-5-30V-to-0-8-28V-12A-Buck-Converter-Const/152990560495
>>>
>>>
>>>
-- Art Z=2E
>>>
>>>
>>> On Mon, May 14, 2018 at 7:59 PM, Charlie Engl
and <
>>> ceengland7@gmail=2Ecom <mailto:ceengland7@gmail=2Ecom>> wrote
:
>>>
>>> Ebay for a 'boot/buck switching regulator' sized for your
>>> needs (likely way less than$30), and an aux battery sized
>the
>>> same way=2E Create a 'mini' bus for the items you want to
>iso
late=2E
>>>
>>> If all you want is brownout protection, a little 2
or 3 AH
>>> battery shoul be more than enough=2E
>>>
>>> Th
ere are other commercial products available that do the
>>> same th
ing, but obviously you will pay more=2E
>>>
>>> Charlie
>>>
On May 14, 2018, at 7:45 PM, Art Zemon < art@zemon=2Ename
>>> <mai
lto:art@zemon=2Ename>> wrote:
>>>
>>> Sebastien,
>>>
>>>
MGL sells the AvioGuard, a DC-to-DC converting power
>>>
supply for isolating the avionics from the rest of the
>>> airc
raft system=2E It supports a backup battery=2E Cost
>would
>>>
be $450 + the battery=2E
>>>
>>> I am hoping for a less expensi
ve solution=2E
>>>
>>> -- Art Z=2E
>>>
>>>
>>> On M
on, May 14, 2018 at 7:09 PM, Sebastien <
>>> cluros@gmail=2Ecom
<mailto:cluros@gmail=2Ecom>> wrote:
>>>
>>> Battery for th
e EFIS? Does MGL make a backup battery
>>> for your engine
monitor?
>>>
>>> On Mon, May 14, 2018 at 4:51 PM, Art Zemon
<
>>> art@zemon=2Ename <mailto:art@zemon=2Ename>> wrote:
>
>>
>>> =8B=8B
>>> Folks
,
>>>
>>> I am /finally/ to the point on my project of
>>> starting the engine=2E When I first engage the
>>>
starter, voltage drops so low that my EFIS
>>>
reboots=2E The EFIS immediately reboots, less than
>>>
1 second later, but it takes several seconds for
>>>
the engine instruments to come back online=2E
>>>
>>>
It is a 12 volt system=2E During engine start, the
>>>
equipment is drawing about 5 amps (other than
>the
>>>
starter motor)=2E I need about 9 volts to keep the
>>>
EFIS from rebooting=2E
>>>
>>> I am using figu
re Z-12 with very minor
>>> modifications: replaced the
ammeter shunts with
>>> hall effect sensors and rearra
nged the switches
>a
>>> bit=2E You can see my modified
diagram here:
>>> engine=2Epdf
>>>
><https://drive=2Egoogle=2Ecom/file/d/12DhiCdTSuUNvlsmBK027yQ1mDDy5eRUl/vi
ew?usp=sharing>
>>>
>>>
>>> What would be the simples
t way to fix this
>issue?
>>>
>>>
>>>
>>> --
>>> h
ttps://CheerfulCurmudgeon=2Ecom/
>>> <https://CheerfulCurmudgeo
n=2Ecom/>
>>>
>>> /"If I am not for myself, who is for me? And
if I am
>only
>>> for myself, what am I? And if not now, when?"
Hillel/
>>>
>>>
>>>
>>>
>>> --
>>> https://CheerfulCurmudgeon=2Ec
om/
>>>
>>> /"If I am not for myself, who is for me? And if I am only f
or
>>> myself, what am I? And if not now, when?" Hillel/
>>
>>
>
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