Today's Message Index:
----------------------
1. 01:41 AM - Z101 with two B&C Regulators (Jared Yates)
2. 05:41 AM - Re: Static On GTN-650 (Art Zemon)
3. 06:35 AM - Re: Low voltage warning light (John M Tipton)
4. 07:12 AM - Re: Re: Low voltage warning light (Robert L. Nuckolls, III)
5. 09:55 AM - Re: Z101 with two B&C Regulators (Robert L. Nuckolls, III)
6. 10:15 AM - Re: Low voltage warning light (user9253)
7. 04:16 PM - Re: Low voltage warning light (DANIEL PELLETIER)
8. 07:51 PM - Re: Static On GTN-650 (Paul Millner)
Message 1
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| Subject: | Z101 with two B&C Regulators |
If a person was going to use a B&C regulator for the standby alternator
(SD-20, now BC410-H) instead of the Ford regulator, would it be better to
use the LR3D or the SB1B?
Also, relating the old switch terminology to Z101, are the master/alt and
aux bus/aux alt switches what we would have called the 2-10, on-on-on?
Thanks!
Jared
Message 2
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| Subject: | Re: Static On GTN-650 |
Some LED lights are, indeed, incredibly noisy. My son discovered that they
pretty much trash garage door openers with RF interference. With cheap LED
bulbs installed in the garage door opener, it was well nigh impossible to
close the door using the remote in the car because the light was on. We
have both switched to a different brand of LED lights in our garage doors
and *voila!* both are now working properly again. Once again, the lesson
seems to be that you get what you pay for.
-- Art Z.
On Fri, Dec 17, 2021 at 7:29 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
>>
>>
>>
>>
>>
>>
--
My blog: CheerfulCurmudgeon.com
*The good is already there. Practicing gratitude means being fully aware of
the good that is already yours.*
Message 3
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| Subject: | Re: Low voltage warning light |
Hi Peter - Its a pity 'Bob' doesn't produce his AEC9005-201 'Low Voltage' module
any more, even the parts kit would be good for a home build project if it were
available - John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505303#505303
Message 4
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| Subject: | Re: Low voltage warning light |
At 08:34 AM 12/19/2021, you wrote:
><johntiptonuk@hotmail.com>
>
>Hi Peter - Its a pity 'Bob' doesn't produce his AEC9005-201 'Low
>Voltage' module any more, even the parts kit would be good for a
>home build project if it were available - John
There 'might' be a better option. I've ordered in a fist-full
of these critters:
https://tinyurl.com/y4nwk4at
They feature an LM358 dual operational amplifier
with a 30v operating voltage. Of couse we don't
yet know what the schematic looks like but the
chip ratings offer a glimmer of promise for
adequate functional characteristics . . . and
that 'transistor' next to the chip just 'might'
be a precision voltage reference . . . won't
know until they get here.
With the advent of popular LiFePO4 products
sold without battery management systems, some
builders may find value in having TWO low
voltage monitors: one for alternator failure
notification the second for battery over-discharge
notification.
Watch this space.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 5
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| Subject: | Re: Z101 with two B&C Regulators |
At 03:39 AM 12/19/2021, you wrote:
>If a person was going to use a B&C regulator for
>the standby alternator (SD-20, now BC410-H)
>instead of the Ford regulator, would it be
>better to use the LR3D or the SB1B?=C2
>
>Also, relating the old switch terminology to
>Z101, are the master/alt and aux bus/aux alt
>switches what we would have called the 2-10, on-on-on?
>
Suggest you use the cheapest one you can put
your hands on.
In the vast majority of installations, the s/b regulator
will never see service under duress. Alternator system
failures are rare. The s/b system is just that: 'stand by'.
It should be preflight tested every flight cycle
and then sit dormant the rest of the time.
The system has an EXPECTED service
life of thousands of hours but needed only
minutes over it's total existence in your
project. It is lightly used but often tested.
Likelihood that it would become unavailable
when needed is on the same order of probability
of being brought down by a failure of prop bolts.
A full-featured alternator controller in the s/b
system secures no benefit. That's why z101 suggests
a $15, Smiley Jack's Auto Parts regulator.
All that extra cash will buy you a couple
trips worth of fuel which is a positive
return on investment.
Yes, that symbol is unique to the on-on-on
function of a 2-10 switch.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 6
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| Subject: | Re: Low voltage warning light |
It would be nice if the LED blinked to get your attention.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505306#505306
Message 7
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| Subject: | Re: Low voltage warning light |
www.PerihelionDesign.com
Envoy=C3=A9 de mon iPad
> Le 17 d=C3=A9c. 2021 =C3- 17:58, Bill Boyd <sportav8r@gmail.com> a =C3=A9
crit :
>
> =EF=BB
> 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 d
esign, and have the low voltage warning light powered only by the regulator f
or the backup alternator wired so that it extinguishes as long as the main a
lternator is online, putting out its higher set voltage.
>
> If you are using B&C or similar regulators, this bulb might be just what y
ou 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> wr
ote:
>>
>>
>>> On Fri, Dec 17, 2021 at 3:34 PM Peter Pengilly <Peter@sportingaero.com> w
rote:
>>> 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 tha
t indicates when the battery is supporting the electrical loads.
>>>
>>> A few years ago I bought a self-contained large LED from Perihelion Desi
gn, 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=99
m not that great with electronics and I=99ve got too much other stuff t
o 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 t
hese 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 s
tock, but you might be able to find a similar product on the site. You'd sti
ll need to add your own display lamp or LED; the device just provides a set o
f '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 y
our warning light (the alternator drives an 'idiot light').
>>
>> Charlie
Message 8
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| Subject: | Re: Static On GTN-650 |
Art Zemon wrote: the lesson seems to be that you get what you pay for.
Hi Art!
That's never been the lesson. Though, it is true that you seldom get
MORE than you pay for. I think the LEDs were probably innocent...
rather, it's the poorly filtered power supplies for the LEDs that caused
the interference. Perhaps that is a distinction without a difference,
but the LED itself is pretty interference free... but beware the support
system!
Paul, Thailand remote
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