Today's Message Index:
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1. 08:12 AM - Re: Re: Alternator with no battery? (Bill Watson)
2. 09:39 AM - Re: power supply for testing (Jeff Page)
3. 01:45 PM - Re: Lighted Toggle Switch recommendation (DeWitt Whittington)
4. 05:57 PM - LED Light for SD-8 On Indication (rossmickey@comcast.net)
5. 05:59 PM - D-Sub connector use (Ken Ryan)
6. 08:13 PM - Re: LED Light for SD-8 On Indication (user9253)
Message 1
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| Subject: | Re: Alternator with no battery? |
It seems that the answer presented is that 'many' alternator
installations will continue to provide power but may be subject to being
'stalled' by heavy loads.
Specificity would seem to be required to take this further. The next
question would seem to be, "what components and configuration are you
curious about"?
So, I have (3) B&C LR3C-14 regulators controlling (2) B&C alternators.
Another question might be "Is there a difference between a battery
losing a cell (partial failure) and a 'broken battery cable' or (total
failure)"?
Bill "just following along out of curiosity" Watson
On 6/4/2015 10:37 PM, donjohnston wrote:
>
> Sigh... Let me try this again:
>
> Does anyone know what the impact of a loss of battery output (wire coming loose,
solenoid failing, battery falling out of the plane, being stolen in flight
by aliens, etc.) on the output of the alternator (with engine running at cruise
power)?
>
> It would seem to me that if the load is less than the output of the alternator,
it should continue to put out power as long as the engine is running.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=443059#443059
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
>
>
Message 2
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| Subject: | Re: power supply for testing |
I bought something like this. I don't remember which vendor.
This one has adjustable voltage. I bought one in this voltage range,
so that I could have 14.2V after dropping through a protection diode.
If the unit is not plugged in, but is "back fed" voltage from the
airplane battery, it will be damaged, so put an eBus diode in series,
then adjust the output voltage as desired.
http://tinyurl.com/lq7je4b
A computer power supply produces quite a lot of current at 5V, but not
so much as 12V. Some models require a load on the 5V output to
regulate properly.
Jeff Page
Dream Aircraft Tundra #10
> Time: 03:58:56 AM PST US
> Subject: Re: AeroElectric-List: power supply for testing
> From: A R Goldman <argoldman@aol.com>
>
> What about a power supply from an old computer?
>
> Thanks
>
> Rich
>
> Sent from my iPhone
>
>> On Jun 4, 2015, at 1:41 PM, "Robert L. Nuckolls, III" <nuckolls.bob@aeroel
> ectric.com> wrote:
>>
>> At 10:09 AM 6/4/2015, you wrote:
>>> Would this item be an acceptable choice for testing my electrical system?
> Could it be used without any battery in the system? My avionics etc. are al
> l Dynon.
>>>
>>> http://www.amazon.com/Universal-Regulated-Switching-Computer-Project/dp/B
> 00D7CWSCG/ref=sr_1_5?ie=UTF8&qid=1433430384&sr=8-5&keywords=12+vol
> t+DC+power+supply&pebp=1433430415435&perid=1MV8XVM71ACD3B1WWBYZ
>>>
>>> Thanks,
>>>
>>> Ken
Message 3
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| Subject: | Re: Lighted Toggle Switch recommendation |
One of my partners in the Sportsman sent me this information on our rocker
switches:
"We have Honeywell AML-24 series switches. (various models, depending on
function)"
Dee
DeWitt (Dee) Whittington
Richmond, VA
804-677-4849 iPhone
804-358-4333 Home
On Fri, Jun 5, 2015 at 7:11 PM, DeWitt Whittington <
dee.whittington@gmail.com> wrote:
> I'm still trying to find the exact part number, Hari, for our Honeywell,
> lighted rocker switches for our Sportsman. We bought them through John
> Stark in Columbus, Georgia, who built our panel. I'll see if Doug Hanson,
> my partner who is the electrical guru knows.
>
> Dee
>
> DeWitt (Dee) Whittington
> Richmond, VA
> 804-677-4849 iPhone
> 804-358-4333 Home
>
>
> On Thu, Jun 4, 2015 at 12:03 PM, Hariharan Gopalan <rdu.hari@gmail.com>
> wrote:
>
>> Hello Group
>>
>> Is anyone using lighted toggle switches? Looking for recommendations.
>>
>> Thanks
>> Hari
>>
>> *
>>
>>
>> *
>>
>>
>
Message 4
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| Subject: | LED Light for SD-8 On Indication |
I wanted to install an LED "ON" indicator light for when I switch on the SD-8 alternate
power supply. I rigged an LED so it works with the 12 Volt system and
tried it on the switch which goes to ground for ON. It works fine when it is
the only thing on the switch. When I hook up the SD-8 relay to it ( as wired for
the original Z-8 diagram with NO self excite) which is also a switch to ground
for on, the LED lights up even in the off position. Since the LED ground and
SD-8 relay ground share the same terminal, my only explanation is that the
LED is finding a ground somewhere along the SD-8 relay pathway. I have stared
at the drawing until my eyes are crossed and can't figure out what's happening.
Is my SD-8 wiring screwed up or is there actually a way for the LED to find a ground
along the pathway? If so, I guess I am SOL on hooking an on indicator light.
Ross
Message 5
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| Subject: | D-Sub connector use |
My left wing contains my Dynon ADAHRS module, which is normally connected
to the Skyview Network using a D-Sub 9 connector. The wing also has an Aveo
LED light that has 4 wires (nav power, strobe power, ground,
snynchronization). The nav light draws 0.6 amps and the strobe draws 3.2
amps (peak).
Wire sizes are 22 gauge for the ADAHRS and strobe sync wire, and 20 gauge
for the strobe power, nav power and ground.
I want a connector at the wing root to facilitate wing folding (or
removal). Can I use a D-Sub 15 connector for this purpose. I hope so
because I already spent the day completing it.
Message 6
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| Subject: | Re: LED Light for SD-8 On Indication |
Can you attach a drawing of your schematic showing how the LED is wired? I can
not visualize how the LED is connected. LEDs require very little current to
illuminate. Sometimes a solid state switch (when off) will leak enough current
to turn on an LED. A schematic will be very helpful to others who are trying
to answer your question.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=443199#443199
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