AeroElectric-List Digest Archive

Tue 06/11/13


Total Messages Posted: 8



Today's Message Index:
----------------------
 
     1. 04:29 AM - Re:12V Batteries (Mark Banus)
     2. 06:23 AM - Re: Indicator light circuit with push to test (Eric M. Jones)
     3. 06:53 AM - Re: Indicator light circuit with push to test (donjohnston)
     4. 07:22 AM - Re: Re: Indicator light circuit with push to test (Stuart Hutchison)
     5. 07:50 AM - Re: Re:12V Batteries (Robert L. Nuckolls, III)
     6. 08:14 AM - Re: Re: Indicator light circuit with push to test (Vern Little)
     7. 09:33 AM - Re: Indicator light circuit with push to test (donjohnston)
     8. 05:13 PM - Re: Re: Indicator light circuit with push to test (Vern Little)
 
 
 


Message 1


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    Time: 04:29:56 AM PST US
    From: Mark Banus <mbanus@hotmail.com>
    Subject: RE:12V Batteries
    Bob, I have a Subaru EJ-25 with a duel battery system. A&B Bus' with both or either powering the Essential bus. Mark


    Message 2


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    Time: 06:23:37 AM PST US
    Subject: Re: Indicator light circuit with push to test
    From: "Eric M. Jones" <emjones@charter.net>
    Push-to-Test circuits are testament to the poor reliability of tungsten filament lamps. They are not needed in LED systems. Granted, some allowance could be made if it made sense, but it would be a stretch to think of one. One design note: The enormous decrease in the cost of tiny video systems means they could be put almost anywhere. Think of the possibilities: Fire detection, Ice detection, landing gear position and lock condition, In-tank fuel level indication, rear traffic monitor, FLIR Binocular altitude detection. There are endless possibilities. Anyplace you would like to see can now be seen. -------- 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=402479#402479


    Message 3


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    Time: 06:53:05 AM PST US
    Subject: Re: Indicator light circuit with push to test
    From: "donjohnston" <don@numa.aero>
    > I think there is a bit of focus on testing the lamps. Its not the only function for the PTT function. > I use the PTT to set the dimmer level for night operations. Press the button, dial in the light level you want and you wont be dazzled when a warning lamp comes on. Awww. Crap! I didn't think about dimming. :( How the heck am I going to be able to dim all the indicators with a single knob? I used Eric's EGPAVR for panel and interior lights. And that would work with the ground switched indicators, but not the device driven indicators. BTW, After reading the responses, I've elected to forgo the PTT function. The indicators will be tested by activating the associated devices. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=402486#402486


    Message 4


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    Time: 07:22:00 AM PST US
    From: "Stuart Hutchison" <stuart@stuarthutchison.com.au>
    Subject: Re: Indicator light circuit with push to test
    Kinda like the F-35, which employs a Distributed Aperture System (DAS) to amalgamate video in the pilot's helmet for vision past the airframe in all directions. Yes, imagine if you could peer inside the fuel tanks ... yay! Although, this will probably become affordable just before the demise of fossil fuels & electrolyte won't be quite so entertaining :-) Kind regards, Stu F1 Rocket VH-FLY http://www.mykitlog.com/RockFLY www.teamrocketaircraft.com -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Eric M. Jones Sent: Tuesday, June 11, 2013 11:23 PM Subject: AeroElectric-List: Re: Indicator light circuit with push to test --> <emjones@charter.net> Push-to-Test circuits are testament to the poor reliability of tungsten filament lamps. They are not needed in LED systems. Granted, some allowance could be made if it made sense, but it would be a stretch to think of one. One design note: The enormous decrease in the cost of tiny video systems means they could be put almost anywhere. Think of the possibilities: Fire detection, Ice detection, landing gear position and lock condition, In-tank fuel level indication, rear traffic monitor, FLIR Binocular altitude detection. There are endless possibilities. Anyplace you would like to see can now be seen. -------- 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=402479#402479


    Message 5


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    Time: 07:50:08 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: RE:12V Batteries
    At 06:29 AM 6/11/2013, you wrote: > >Bob, >I have a Subaru EJ-25 with a duel battery system. A&B Bus' with >both or either powering the Essential bus. > >Mark > Okay, I guess it's a matter of personal philosophies. If it were my airplane, I think I would be inclined to purchase the most economical batteries in the class. Replace one of them at first annual and the other one at second annual then replace oldest battery every year thereafter. Thus you have no battery more than two years old and one battery always less than one year old. Absolute 'quality' of a battery is only loosely related to service life and reliability. Poor battery treatment will cause premature failure of the 'best' battery. Reasonable preventative maintenance can wring exceptional value from the least expensive batteries. I would counsel a quest for confidence based on good working knowledge of your battery's maintenance than to risk being spoofed into a false confidence for having installed the Cadillac of batteries. I think your cost of ownership will be less with exceptional reliability. Bob . . .


    Message 6


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    Time: 08:14:03 AM PST US
    From: "Vern Little" <sprocket@vx-aviation.com>
    Subject: Re: Indicator light circuit with push to test
    ... That's why I developed the IL-4A lamp controller in 2004. Now available from MakerPlane. It supports the dimming and ptt for both active high and active low signals... Vern -----Original Message----- From: donjohnston Sent: Tuesday, June 11, 2013 6:52 AM Subject: AeroElectric-List: Re: Indicator light circuit with push to test > I think there is a bit of focus on testing the lamps. Its not the > only function for the PTT function. > I use the PTT to set the dimmer level for night operations. Press the > button, dial in the light level you want and you wont be dazzled when a > warning lamp comes on. Awww. Crap! I didn't think about dimming. :( How the heck am I going to be able to dim all the indicators with a single knob? I used Eric's EGPAVR for panel and interior lights. And that would work with the ground switched indicators, but not the device driven indicators. BTW, After reading the responses, I've elected to forgo the PTT function. The indicators will be tested by activating the associated devices. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=402486#402486 ----- No virus found in this message. Checked by AVG - www.avg.com


    Message 7


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    Time: 09:33:59 AM PST US
    Subject: Re: Indicator light circuit with push to test
    From: "donjohnston" <don@numa.aero>
    > That's why I developed the IL-4A lamp controller in 2004. Now available > from MakerPlane. It supports the dimming and ptt for both active high and > active low signals... > > Vern > > -- I looked at that. But I couldn't find any documentation. I'm not keen on buying something if I can't see the documentation up front. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=402508#402508


    Message 8


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    Time: 05:13:43 PM PST US
    From: "Vern Little" <sprocket@vx-aviation.com>
    Subject: Re: Indicator light circuit with push to test
    It's all there: http://107.22.231.30/redmine/projects/il-4a/documents Thx, Vern -----Original Message----- From: donjohnston Sent: Tuesday, June 11, 2013 9:33 AM Subject: AeroElectric-List: Re: Indicator light circuit with push to test > That's why I developed the IL-4A lamp controller in 2004. Now available > from MakerPlane. It supports the dimming and ptt for both active high and > active low signals... > > Vern > > -- I looked at that. But I couldn't find any documentation. I'm not keen on buying something if I can't see the documentation up front. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=402508#402508 ----- No virus found in this message. Checked by AVG - www.avg.com




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