Today's Message Index:
----------------------
0. 05:46 AM - A List Contribution - It's Your Personal Squelch Button... (Matt Dralle)
1. 11:11 AM - LEDs light mystery (Carlos Trigo)
2. 11:26 AM - Re: LEDs light mystery (Sebastien)
3. 01:59 PM - Re: LEDs light mystery (Charlie England)
4. 03:35 PM - Pilgrimage to AeroMeca . . . (Robert L. Nuckolls, III)
Message 0
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | A List Contribution - It's Your Personal Squelch Button... |
There is an automatic "squelch button" of sorts for the Fund Raiser messages.
Here's how it works... As soon as a List member makes a Contribution through
the Matronics Fund Raiser web site, their email address is automatically added
to this year's Contributor List and they instantly cease to receive further Fund
Raiser messages for the rest of the month! Its just that simple! :-)
I really do appreciate each and every one of your individual Contributions to support
the Lists. It is your support that enables me to upgrade the hardware
and software that are required to run a List Site such as this one. It also goes
to pay for the commercial-grade Internet connection and to pay the huge electric
bill to keep the computer gear running and the air conditioner powered
on. I run all of the Matronics Email List and Forums sites here locally which
allows me to control and monitor every aspect of the system for the utmost in
reliably and performance. Your personal Contribution matters because, when combined
with other Listers such as yourself, it pays the bills to keep this site
up and running. I accept exactly ZERO advertising dollars for the Matronics
Lists sites. I can't stand the pop-up ads and all other commercials that are
so prevalent on the Internet these days and I particularly don't want to have
it on my Email List sites.
If you appreciate the ad-free, grass-roots, down-home feel of the Matronics Email
Lists, please make a Contribution to keep it that way!!
http://www.matronics.com/contribution
or, you can send a personal check to the following address:
Matronics / Matt Dralle
581 Jeannie Way
Livermore, CA 94550
Thank you!
Matt Dralle
Matronics Email List Administrator
[Note that there are certain circumstances where you might still see a Contribution
related message. For example, if someone replies to one of the messages,
when using the List Browse feature, or when accessing List message via the Forum.
The system keys on the
given email address and since most of these are anonymous public access methods,
there is no simple way to filter them.]
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | LEDs light mystery |
=EF=BB
=EF=BBDear electronics wizards
I have installed, in the baggage compartment of my RV-10, a couple of these L
EDs lights
I want that these lights are lit whenever the baggage door is open, like we h
ave in our cars.
Therefore I connected the lights to the microswitch which already was used t
o indicate that the door is open, in one of the alarm features available in t
he Garmin G3X system.
This alarm feature requires that the microswitch used to indicate the open d
oor is connected through a ground circuit, i.e, this microswitch is a N.O. o
ne, and connects the circuit to ground whenever the baggage door is open.
So, these 2 LEDs lights are permanently connected to +, and get ground only w
hen the microswitch is open, simultaneously when the door is open.
Now, when the baggage door is open, the lights are On, which is good.
The mystery (at least for me, as I am a bit electronics challenged) is that w
hen the door is closed, these LEDs lights are dimmed lit...
This has an explanation, of course, but I don=99t know it.
Why these LEDs lights emit some light, although down dimmed, when they have p
ower in the red wire but no ground in the black wire?
I suppose that this dimmed light represents some battery power consumption, s
o, is there a solution for my problem? Any diode to be put in the ground wir
e?
Thanks
Carlos
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LEDs light mystery |
If the microswitch opens the ground circuit when the door is closed, your
lights are not being grounded through that ground. They are being grounded
through the OTHER wire, the one going to the G3X. I don't know if this can
damage your G3X, but I don't think it is a good idea. You could perhaps put
a diode in the G3X wire, but a better idea might be to keep these two
separate systems separate and put in a second microswitch for the lights.
On Sat, Nov 9, 2019, 11:17 Carlos Trigo <trigo@mail.telepac.pt> wrote:
> =EF=BB
> =EF=BBDear electronics wizards
>
> I have installed, in the baggage compartment of my RV-10, a couple of
> these LEDs lights
>
>
> I want that these lights are lit whenever the baggage door is open, like
> we have in our cars.
> Therefore I connected the lights to the microswitch which already was use
d
> to indicate that the door is open, in one of the alarm features available
> in the Garmin G3X system.
> This alarm feature requires that the microswitch used to indicate the ope
n
> door is connected through a ground circuit, i.e, this microswitch is a N.
O.
> one, and connects the circuit to ground whenever the baggage door is open
.
>
> So, these 2 LEDs lights are permanently connected to +, and get ground
> only when the microswitch is open, simultaneously when the door is open.
>
> Now, when the baggage door is open, the lights are On, which is good.
> The mystery (at least for me, as I am a bit electronics challenged) is
> that when the door is closed, these LEDs lights are dimmed lit...
> This has an explanation, of course, but I don=99t know it.
> Why these LEDs lights emit some light, although down dimmed, when they
> have power in the red wire but no ground in the black wire?
>
> I suppose that this dimmed light represents some battery power
> consumption, so, is there a solution for my problem? Any diode to be put
in
> the ground wire?
>
> Thanks
> Carlos
>
>
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LEDs light mystery |
On 11/9/2019 1:09 PM, Carlos Trigo wrote:
>
> Dear electronics wizards
>
> I have installed, in the baggage compartment of my RV-10, a couple of
> these LEDs lights
>
>
> I want that these lights are lit whenever the baggage door is open,
> like we have in our cars.
> Therefore I connected the lights to the microswitch which already was
> used to indicate that the door is open, in one of the alarm features
> available in the Garmin G3X system.
> This alarm feature requires that the microswitch used to indicate the
> open door is connected through a ground circuit, i.e, this microswitch
> is a N.O. one, and connects the circuit to ground whenever the baggage
> door is open.
>
> So, these 2 LEDs lights are permanently connected to +, and get ground
> only when the microswitch is open, simultaneously when the door is open.
>
> Now, when the baggage door is open, the lights are On, which is good.
> The mystery (at least for me, as I am a bit electronics challenged) is
> that when the door is closed, these LEDs lights are dimmed lit...
> This has an explanation, of course, but I dont know it.
> Why these LEDs lights emit some light, although down dimmed, when they
> have power in the red wire but no ground in the black wire?
>
> I suppose that this dimmed light represents some battery power
> consumption, so, is there a solution for my problem? Any diode to be
> put in the ground wire?
>
> Thanks
> Carlos
>
>
Do they light up with the door open if the EFIS isn't powered up? I'd
bet they don't.
If they don't...
Consider that the EFIS must supply a a voltage to the microswitch
(likely around 5V and very current-limited) in order to detect that the
switch has closed. With the switch open (door closed), and the EFIS
powered up, there's a potential difference between your 12V battery
supply, and the <5V?> source voltage from the EFIS.
Try removing the line to the EFIS temporarily and see if the light goes
out completely when the door is closed.
Of course, I could be wrong. :-)
Just saw Sebastian's post; as he mentioned, a diode in the EFIS sense
line (pointed toward the switch) might work, as long as the diode's
leakage current isn't high enough to light the LED, and its forward
voltage drop isn't high enough to keep the EFIS from seeing switch
closure. a Schottky diode might help that issue.
Charlie
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Pilgrimage to AeroMeca . . . |
Dr. Dee and I pulled into the drive about an
hour ago. After 26 hours of asphalt mania and
an amazing and humbling two hours at the
EAA Museum, we're home in good stead.
The barely teenaged grandson seems to have
behaved himself reasonably. No smoking
ruins . . . no cop cars out front when we
drove up.
Got snowed on in OSH but it's 66 degrees and
sunshine in cow town.
Over all, wouldn't have missed it were it
twice the effort. I'll update you all . . .
tomorrow when the center-line-glaze has cleared . . .
Bob . . .
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|