Today's Message Index:
----------------------
1. 05:41 AM - Simple temperature controlled switch (Carlos Trigo)
2. 07:48 AM - Re: Tech Edge "MODA" Fuel Level Probe (addendum) (Robert L. Nuckolls, III)
3. 07:58 AM - Re: Simple temperature controlled switch (Robert L. Nuckolls, III)
4. 10:04 AM - Re: Simple temperature controlled switch (Carlos Trigo)
5. 10:31 AM - Re: EFIS/EMS Brownout/Reboot: =?ISO-8859-1?Q?=9CVoltage?= Slump =?ISO-8859-1?Q?Eliminator=9D? (user9253)
6. 12:05 PM - Re: EFIS/EMS Brownout/Reboot: =?ISO-8859-1?Q?=9CVoltage?= Slump =?ISO-8859-1?Q?Eliminator=9D? (Eric Page)
7. 12:21 PM - =?utf-8?B?4pyIUmU6IEFpcmxpbmVzIEZvciBBbWVyaWNh? (Gautier Riou)
8. 03:38 PM - Re: Testing Battery Capacity... (Robert L. Nuckolls, III)
9. 07:55 PM - Re: Testing Battery Capacity... (Robert L. Nuckolls, III)
Message 1
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| Subject: | Simple temperature controlled switch |
Hi there
Speaking of temperature control, can someone please point me out to a simple
& cheap temperature controlled switch?
The idea is just to turn on and off a pair of cooling fans I have in the
dashboard, depending on the air temperature behind the avionics.
Thanks
Carlos
De: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] Em nome de Robert L.
Nuckolls, III
Enviada: Wednesday, January 3, 2018 5:38 PM
Para: aeroelectric-list@matronics.com
Assunto: Re: AeroElectric-List: Re: Simplest way for a go/no-go 2-Stroke
Engine Temperature Ind
Another option uses the Analog Devices thermocouple
conditioners in a on-off switching mode.
https://goo.gl/7ufeaL
Here's a simplified schematic . . .
Instead of driving a heater control relay, one could
drive an LED indicator light directly from the
signal conditioner's output . . .
This would let you connect directly to the cylinder
head with appropriate thermocouple material.
Bob . . .
Message 2
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| Subject: | Re: Tech Edge "MODA" Fuel Level Probe (addendum) |
At 09:18 PM 1/3/2018, you wrote:
>Interesting device. I wonder though whether a metal tank's contents
>can be measured as effectively by this device when mounted externally?
No . . . plastic only. You need to add the accessory
probe through the wall of a metal tank.
Bob . . .
Message 3
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| Subject: | Re: Simple temperature controlled switch |
At 07:37 AM 1/4/2018, you wrote:
>From: "Carlos Trigo" <trigo@mail.telepac.pt>
>To: <aeroelectric-list@matronics.com>
>Subject: AeroElectric-List: Simple temperature controlled switch
>
>Hi there
>
>Speaking of temperature control, can someone please point me out to
>a simple & cheap temperature controlled switch?
>The idea is just to turn on and off a pair of cooling fans I have in
>the dashboard, depending on the air temperature behind the avionics.
>
>Thanks
>Carlos
There are many options for thermo-mechanical switches
(thermostats) like these on eBay.
https://goo.gl/5XP2ed
Then, for just a few dollars more, there are adjustable,
thermostats that can be set up for either close on rise,
or close on fall. Further, they can be tweaked for the
operating set point.
https://goo.gl/mfmzo7
Bob . . .
Message 4
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| Subject: | Re: Simple temperature controlled switch |
Thanks Bob
Exactly what I need.
(With the profusion of things on sale on eBay and the such, it is not easy t
o find the most appropriate)
Cheers
Carlos
Enviado do meu iPhone
No dia 04/01/2018, =C3-s 15:58, Robert L. Nuckolls, III <nuckolls.bob@aero
electric.com> escreveu:
> At 07:37 AM 1/4/2018, you wrote:
>> From: "Carlos Trigo" <trigo@mail.telepac.pt>
>> To: <aeroelectric-list@matronics.com>
>> Subject: AeroElectric-List: Simple temperature controlled switch
>>
>> Hi there
>>
>> Speaking of temperature control, can someone please point me out to a sim
ple & cheap temperature controlled switch?
>> The idea is just to turn on and off a pair of cooling fans I have in the d
ashboard, depending on the air temperature behind the avionics.
>>
>> Thanks
>> Carlos
>
> There are many options for thermo-mechanical switches
> (thermostats) like these on eBay.
>
> https://goo.gl/5XP2ed
>
> Then, for just a few dollars more, there are adjustable,
> thermostats that can be set up for either close on rise,
> or close on fall. Further, they can be tweaked for the
> operating set point.
>
> https://goo.gl/mfmzo7
>
>
>
>
>
> Bob . . .
Message 5
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| Subject: | Re: EFIS/EMS Brownout/Reboot: =?ISO-8859-1?Q?=9CVoltage?= |
Slump =?ISO-8859-1?Q?Eliminator=9D?
I have received the new and improved deslumpifier from Eric Page. I am impressed
with the quality of construction. It looks like it was professionally made
in a factory. Eric must do this kind of work for a living. Large parts have
been glued (E6000 ?) to the circuit board to prevent damage from vibration.
He even included one extra mounting screw in case I loose one. And there is one
extra female flag type faston connector just in case I ruin one.
It is too cold, 5 F or -15 C, to work on the plane. So I conducted this unscientific
test:
Input voltage to Deslumpifier: 11.62
Output voltage: 11.37
Load: Incandescent lamp part number 7219 draws 58 milliamp
Applied power, then disconnected input to Deslumpifier.
Lamp immediately dimmed slightly.
Output voltage dropped to 10 volts within 2 seconds.
After one full minute, voltage had dropped to 5.8, lamp filament glowed dimly.
After two minutes, voltage had dropped to 3.3, lamp glowed very dimly.
Conclusion: The Deslumpifier has lots of capacitance. :)
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=477076#477076
Message 6
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| Subject: | Re: EFIS/EMS Brownout/Reboot: =?ISO-8859-1?Q?=9CVoltage?= |
Slump =?ISO-8859-1?Q?Eliminator=9D?
Thanks, Joe, youre very kind. Im just a hobbyist, not a pro. The glue is Bobs
favorite, Shoe Goo, as it was taking an absurd length of time for an order of
E6000 to arrive. Probably a better choice anyway, as it comes from the tube
quite a bit thicker than E6000.
The dimming you observed upon disconnecting power is because output from the capacitor
bank passes through an additional diode, creating an immediate small voltage
drop when the input slumps.
Im glad to hear the device is working. I mailed one to Bob as well, and hes planning
to do some instrumented tests when he has a chance; Im sure hell post the
results here in due course. Hopefully it will live up to the hype!
Eric
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=477079#477079
Message 7
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Message 8
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| Subject: | Re: Testing Battery Capacity... |
At 04:12 PM 1/1/2018, you wrote:
>Greetings,
>
>I've built up the capacity tester documented by
>Bob N. in:=C2
><http://www.aeroelectric.com/articles/battest.pdf>http://www.aeroelectric.c
om/articles/battest.pdf
>and thought folks might want to see what it
>looks like in the flesh.=C2 I've attached a
>picture but let me know if it fails to show
>up.=C2 Since I only get the digest version of the
>postings, I won't get it (I never see any
>attachments).=C2 If anyone else who gets the
>digest want a copy, just email me direct with
>the request and I'll send the pic back in my reply.
Got it. Looks good!
>The two resistors, the zener and the transistor
>are all on the little piece of prototyping
>circuit board zip-tied to the top of the
>relay.=C2 For me it was easier to come up with a
>3 ohm 100W power resistor than the 55W 12V lamp shown in Bob's schematic.
Of course, that gives you an initial discharge
~4A at startup which tapers to ~3.66A at end of
test.
>I tested the 17AHr AGM battery (Werker, from
>Batteries Plus) which I pulled out of my Longeze
>this last summer (after two years of service)
>and, at ~18 degreesF, it ran for 2hrs 35 minutes.
Assuming an average drain of 3.8A x 2.6 hours
yields 9.8 Ampere-Hours. Just for grins, let's
go look at the specs on new Odyssey products
Emacs!
The PC535 (14.8 a.h. at 20 hour
rate) will deliver about 12 a.h. at
a 2.5 hour rate.
This suggests that your existing battery
delivers less snort than a new 15 a.h.
battery. Comparing to a PC625 (18 a.h.
at 20 hour rate), a 4A load should
be supported for about 4 hours with
a delivery of 15.6 a.h.
Emacs!
This is on example of how the po' boy's
cap checker can be used to evaluate a
battery . . . your test article is down
to about 65% of new capacity. Time to toss
in the towel.
>=C2 I've yet to test the battery I replaced it with.
Would like to see that data . . .
>=C2 This is no where near long enough to match my
>max duration (which is no surprise since my max
>duration at economy cruise at altitude is almost
>12 hrs...) but it good enough to provide enough options.
Have you considered installing Z13/8?
UNLIMITED endurance at 8A worth of system
loads without up-sizing the existing
battery.
Thanks for sharing this!
Bob . . .
Message 9
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| Subject: | Re: Testing Battery Capacity... |
>I tested the 17AHr AGM battery (Werker, from Batteries Plus) which I
>pulled out of my Longeze this last summer (after two years of
>service) and, at ~18 degreesF, it ran for 2hrs 35 minutes.
Just noticed the temperature callout . . . this
was battery temperature at the beginning of
the test?
You might want to put it on a precision
charger/maintainer and retest at room
temp . . . you may well see a lot of
improvement.
Bob . . .
Bob . . .
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