Today's Message Index:
----------------------
1. 09:18 AM - AW: AW: Automatic header tank filling (Peter Sokolowski)
2. 12:17 PM - Re: AW: AW: Automatic header tank filling (nuckollsr)
3. 05:07 PM - Schematic Diagram Software (Bill Steer)
4. 06:07 PM - Re: Schematic Diagram Software (Robert L. Nuckolls, III)
5. 11:13 PM - Re: Schematic Diagram Software (Rob Turk)
Message 1
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| Subject: | Automatic header tank filling |
Thanks Bob,
I will go first with the analog comparator approach - having the relevant
voltages confirmed I will get the c ordered. BTW - what would be the price
?
Looking on the schematic - at least to the comparator one - there is no
hysteresis - right ? Iaw - the pump runs "all the time" the full limit is
not reached.
Will the c one have such a hysteresis in the SW ?
Br
Peter
-----Ursprngliche Nachricht-----
Von: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] Im Auftrag von C&K
Gesendet: Sonntag, 4. Juni 2017 18:18
An: aeroelectric-list@matronics.com
Betreff: Re: AW: AeroElectric-List: Automatic header tank filling
That surprises me. Even in my high wing aircraft the header tank vents back
to a main tank in the wing Ken
On 04/06/2017 9:21 AM, Robert L. Nuckolls, III wrote:
> At 09:01 PM 6/2/2017, you wrote:
>>>
>>> Also there is a drain (standard for Lancair header tanks) in case
>>> you overfill it just goes overboard.
>>>
>>> Would you mind sharing the schematic you already invented ?
>>>
>>> Thanks in advance,
>>>
>>> Peter
>>
>
> Here's a couple of approaches to a fuel
> transfer controller applicable to your
> project.
>
> http://tinyurl.com/yc4754vw <http://tinyurl.com/yc4754vw>
>
> The first page shows ship's wiring for
> power, switch, relay, pump and over-fill
> warning light.
>
> The second page illustrates a micro-controller
> based control module. Input signal voltage
> from the fuel gate is watched. The pump and
> warning light are activated based on numbers
> stored in the uC memory at the time software
> is loaded to the controller. This is the
> lowest parts count approach and very compact.
> All the electronics would fit into the backshell
> of a 15-pin d-sub connector.
>
> The third page illustrates an analog comparator
> approach to the same task. Potentiometers allow
> you to 'tune' the switch points for pump operation
> and illumination of the warning light.
>
> In both cases, the warning light can be left
> out if deemed unnecessary. Page 3 lends itself
> to a DIY approach. If fuel gage voltages are
> known, the uC approach would also work as a DIY
> project. We can supply the uC with the target
> voltages in situ. Those values are easily altered
> as experience dictates. Just order up another chip
> with revised calibration. The 'bad' chip isn't even
> worth returning . . . they're about 80 cents.
>
>
> Bob . . .
>
Message 2
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| Subject: | Re: AW: AW: Automatic header tank filling |
You can have the uC . . . need feedback on your success/problems.
There is hysteresis on both comparators. Those values are not calculated . . .
I can expand on that now that I know which way you want to go. It would help
to know the target switching voltages . . . does your cap-fuel gage span 0-5 volts
for empty-full?
That uC version is compatible with my 'do-lots' board layout designed to fit into
the d-sub back shell.
http://www.aeroelectric.com/Catalog/AEC/9024/9024_FOOTPRINT.pdf
So once you've deduce the voltages for fill and overfill, we'll be able to supply
a ready-to-install control module . . . you can be the beta-test airframe.
My office computer boot-drive went TU this morning. I'm scrambling around to be
a new drive installed . . . old COA is illegible . . . will have to order a new
one off eBay . . . at the same time, Nvidia ap on Dr. Dee's computer refuses
to talk to the third monitor . . . #$%#$*!!! . . . ain't 'lectronics wunderful?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=469830#469830
Message 3
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| Subject: | Schematic Diagram Software |
I'm making some changes to the wiring in my Zenith 601HD, so need to
update the schematic diagram, which is similar to those in the back of
the Aeroelectric book. I have a .sch file, created in 2007, that
contains the original schematic diagram. Unfortunately, after two
changes of computers, the application that created that file has been
lost. What's worse, I don't remember the name of that application.
I've looked online for appropriate applications, and even tried a few of
them (e.g., KiCAD, EAGLE), but none of them recognizes the file.
Can anybody give me any pointers? Thanks very much.
Bill
Message 4
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| Subject: | Re: Schematic Diagram Software |
At 07:06 PM 6/5/2017, you wrote:
>
>I'm making some changes to the wiring in my Zenith 601HD, so need to
>update the schematic diagram, which is similar to those in the back
>of the Aeroelectric book. I have a .sch file, created in 2007, that
>contains the original schematic diagram. Unfortunately, after two
>changes of computers, the application that created that file has
>been lost. What's worse, I don't remember the name of that application.
>
>I've looked online for appropriate applications, and even tried a
>few of them (e.g., KiCAD, EAGLE), but none of them recognizes the file.
>
>Can anybody give me any pointers? Thanks very much.
I think the .sch extension is unique to
ExperessPCB software.
https://www.expresspcb.com/free-cad-software/
Bob . . .
Message 5
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| Subject: | Re: Schematic Diagram Software |
There's another schematic drawing program using .sch as extension.
Abacom sPlan:
http://www.abacom-online.de/uk/html/produkte.html
On 6/6/2017 3:05 AM, Robert L. Nuckolls, III wrote:
> At 07:06 PM 6/5/2017, you wrote:
>> <steerr@bellsouth.net>
>>
>> I'm making some changes to the wiring in my Zenith 601HD, so need to
>> update the schematic diagram, which is similar to those in the back
>> of the Aeroelectric book. I have a .sch file, created in 2007, that
>> contains the original schematic diagram. Unfortunately, after two
>> changes of computers, the application that created that file has been
>> lost. What's worse, I don't remember the name of that application.
>>
>> I've looked online for appropriate applications, and even tried a few
>> of them (e.g., KiCAD, EAGLE), but none of them recognizes the file.
>>
>> Can anybody give me any pointers? Thanks very much.
>
> I think the .sch extension is unique to
> ExperessPCB software.
>
>
> https://www.expresspcb.com/free-cad-software/
>
>
> <https://www.expresspcb.com/free-cad-software/>
>
> Bob . . .
>
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