Today's Message Index:
----------------------
1. 01:29 PM - Low voltage warning light (Peter Pengilly)
2. 02:22 PM - Re: Low voltage warning light (Charlie England)
3. 02:41 PM - Re: Low voltage warning light (Bill Boyd)
4. 03:57 PM - Static On GTN-650 (William Hunter)
5. 03:59 PM - Re: Low voltage warning light (user9253)
6. 04:58 PM - Re: Static On GTN-650 (user9253)
7. 05:04 PM - Re: Static On GTN-650 (Sebastien)
8. 05:04 PM - Re: Static On GTN-650 (Sebastien)
Message 1
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| Subject: | Low voltage warning light |
I'm looking for a low voltage warning light that illuminates at around 13.2
to 13.5 volts, can anyone recommend one?
I like having a large, bright, low voltage warning light in my panel that
indicates when the battery is supporting the electrical loads.
A few years ago I bought a self-contained large LED from Perihelion Design,
but that is no longer available and I have sold that aeroplane.
My current aeroplane does not have a good warning system so I would like to
buy another.
I could build one from an op amp and a couple of resistors, but I'm not that
great with electronics and I've got too much other stuff to do right now.
The Perihelion unit was well packaged and easy to install. I would like to
buy something similar. Can anyone recommend anything?
Peter
Message 2
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| Subject: | Re: Low voltage warning light |
On Fri, Dec 17, 2021 at 3:34 PM Peter Pengilly <Peter@sportingaero.com>
wrote:
> I=99m looking for a low voltage warning light that illuminates at a
round
> 13.2 to 13.5 volts, can anyone recommend one?
>
>
> I like having a large, bright, low voltage warning light in my panel that
> indicates when the battery is supporting the electrical loads.
>
> A few years ago I bought a self-contained large LED from Perihelion
> Design, but that is no longer available and I have sold that aeroplane.
>
> My current aeroplane does not have a good warning system so I would like
> to buy another.
>
> I could build one from an op amp and a couple of resistors, but I
=99m not
> that great with electronics and I=99ve got too much other stuff to
do right
> now. The Perihelion unit was well packaged and easy to install. I would
> like to buy something similar. Can anyone recommend anything?
>
>
> Peter
>
Hi Peter,
Dan Horton (posts on Van's Air Force, and sometimes on HBA) recommended
these modules, or a similar product, from TomTop:
https://www.tomtop.com/p-e1021.html#flow_qa
I bought a couple to play with a couple of years ago, but have never taken
the time to experiment with them. The site says they're currently out of
stock, but you might be able to find a similar product on the site. You'd
still need to add your own display lamp or LED; the device just provides a
set of 'dry' relay contacts.
Depending on which alternator you're using, it may well have built-in low
voltage detection; all you'd need to do in that case is hook up a wire to
your warning light (the alternator drives an 'idiot light').
Charlie
Message 3
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| Subject: | Re: Low voltage warning light |
I have a spare yellow incandescent light from B&C designed to be used with
their regulators. I used a pair of these regulators for my two-alternator
design, and have the low voltage warning light powered only by the
regulator for the backup alternator wired so that it extinguishes as long
as the main alternator is online, putting out its higher set voltage.
If you are using B&C or similar regulators, this bulb might be just what
you need. Yours for an SASE if it can be of help to your project.
Should show ok in this pic.
-Bill B
On Fri, Dec 17, 2021 at 5:26 PM Charlie England <ceengland7@gmail.com>
wrote:
>
>
> On Fri, Dec 17, 2021 at 3:34 PM Peter Pengilly <Peter@sportingaero.com>
> wrote:
>
>> I=99m looking for a low voltage warning light that illuminates at
around
>> 13.2 to 13.5 volts, can anyone recommend one?
>>
>>
>>
>> I like having a large, bright, low voltage warning light in my panel tha
t
>> indicates when the battery is supporting the electrical loads.
>>
>> A few years ago I bought a self-contained large LED from Perihelion
>> Design, but that is no longer available and I have sold that aeroplane.
>>
>> My current aeroplane does not have a good warning system so I would like
>> to buy another.
>>
>> I could build one from an op amp and a couple of resistors, but I
=99m not
>> that great with electronics and I=99ve got too much other stuff to
do right
>> now. The Perihelion unit was well packaged and easy to install. I would
>> like to buy something similar. Can anyone recommend anything?
>>
>>
>>
>> Peter
>>
>
> Hi Peter,
>
> Dan Horton (posts on Van's Air Force, and sometimes on HBA) recommended
> these modules, or a similar product, from TomTop:
> https://www.tomtop.com/p-e1021.html#flow_qa
>
> I bought a couple to play with a couple of years ago, but have never take
n
> the time to experiment with them. The site says they're currently out of
> stock, but you might be able to find a similar product on the site. You'd
> still need to add your own display lamp or LED; the device just provides
a
> set of 'dry' relay contacts.
>
> Depending on which alternator you're using, it may well have built-in low
> voltage detection; all you'd need to do in that case is hook up a wire to
> your warning light (the alternator drives an 'idiot light').
>
> Charlie
>
Message 4
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| Subject: | Static On GTN-650 |
Hi everyone,
I bought some LED landing lights from Amazon Aircraft Supply and they
seem to produce some static noise on the GTN-650. I have conformed by
turning on/off the landing light switch that the LEDs are the appliance
that is producing the static and I have confirmed that the GTN is the
radio that I am hearing the static through because if I select the
second radio or the third selection (that does not have a radio) on the
SL-15 audio panel the static stops. I do not believe the static sound
is the squelch mode.
The airplane is fiberglass and the power and ground wires are not run
together with the GTN wiring.
The power for the lights comes from a copper bus bar and a KLIXON CB.
Is there some kind of way to filter out the noise?
THANKS for your help and advice!!!
Bill
Message 5
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| Subject: | Re: Low voltage warning light |
I don't have one of these but saw it on eBay for $23 plus $4 shipping.
eBay Item number: 302192182702
Description says, "blinking red indicator". Monitor trip voltage 11.9 volt +/-
10%, adjustable 10-14 volts.
Set at the factory, let us know what you need after you buy.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505294#505294
Message 6
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| Subject: | Re: Static On GTN-650 |
Are audio jacks mounted with insulating washers to prevent them from being grounded
locally?
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505296#505296
Message 7
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| Subject: | Re: Static On GTN-650 |
Another thing is we ordered about twice as many lights as needed and picked
the ones with the lowest noise.
On Fri, Dec 17, 2021 at 5:03 PM Sebastien <cluros@gmail.com> wrote:
> We had the same problem with our amazon lights making noise in the
> intercom. Better headsets helped, finding one wiring problem in the
> intercom wiring helped, but the biggest fix was adding some noise filters
> to the lights. Here's the little filter box I made. It's not a great
> diagram, the box around the electronics is not wiring, it's a box.
>
> On Fri, Dec 17, 2021 at 4:02 PM William Hunter <billhuntersemail@gmail.com>
> wrote:
>
>> Hi everyone,
>>
>> I bought some LED landing lights from Amazon Aircraft Supply and they
>> seem to produce some static noise on the GTN-650. I have conformed by
>> turning on/off the landing light switch that the LEDs are the appliance
>> that is producing the static and I have confirmed that the GTN is the radio
>> that I am hearing the static through because if I select the second radio
>> or the third selection (that does not have a radio) on the SL-15 audio
>> panel the static stops. I do not believe the static sound is the squelch
>> mode.
>>
>> The airplane is fiberglass and the power and ground wires are not run
>> together with the GTN wiring.
>>
>> The power for the lights comes from a copper bus bar and a KLIXON CB.
>>
>> Is there some kind of way to filter out the noise?
>>
>> THANKS for your help and advice!!!
>>
>> Bill
>>
>>
>>
>>
>>
>>
Message 8
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| Subject: | Re: Static On GTN-650 |
We had the same problem with our amazon lights making noise in the
intercom. Better headsets helped, finding one wiring problem in the
intercom wiring helped, but the biggest fix was adding some noise filters
to the lights. Here's the little filter box I made. It's not a great
diagram, the box around the electronics is not wiring, it's a box.
On Fri, Dec 17, 2021 at 4:02 PM William Hunter <billhuntersemail@gmail.com>
wrote:
> Hi everyone,
>
> I bought some LED landing lights from Amazon Aircraft Supply and they seem
> to produce some static noise on the GTN-650. I have conformed by turning
> on/off the landing light switch that the LEDs are the appliance that is
> producing the static and I have confirmed that the GTN is the radio that I
> am hearing the static through because if I select the second radio or the
> third selection (that does not have a radio) on the SL-15 audio panel the
> static stops. I do not believe the static sound is the squelch mode.
>
> The airplane is fiberglass and the power and ground wires are not run
> together with the GTN wiring.
>
> The power for the lights comes from a copper bus bar and a KLIXON CB.
>
> Is there some kind of way to filter out the noise?
>
> THANKS for your help and advice!!!
>
> Bill
>
>
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