Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Re: Master switch warning

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List
View previous topic :: View next topic  
Author Message
ykibuess(at)bluewin.ch
Guest
PostPosted: Sun Jan 08, 2006 12:54 pm    Post subject: Re: Master switch warning Reply with quote

Bob,
The warning for main and e-bus is installed as you suggest. However
there is also the always hot battery bus, which feeds the clock in the
MicoMonitor (some few milliamps) and the cabin lights (condiserably more
power). If these lights are left on - it shouldn't happen, but it will
some day - then the battery will be emptied. Thus the idea of a buzzer
that alerts me if the battery bus distributes more than some few
milliamps. Is this a better explanation of the (not so important)
problem?
Thanks,
Alfred
-----Ursprngliche Nachricht-----
Von: owner-aeroelectric-list-server(at)matronics.com
[mailto:owner-aeroelectric-list-server(at)matronics.com] Im Auftrag von
Robert L. Nuckolls, III
Gesendet: Sonntag, 8. Januar 2006 19:47
An: aeroelectric-list(at)matronics.com
Betreff: AeroElectric-List: Re: Master switch warning
--> <nuckollsr(at)cox.net>
At 04:53 PM 1/8/2006 +0100, you wrote:
<ykibuess(at)bluewin.ch>
The buzzer idea sounds great! Lights and other devices fed by the
always hot battery bus will empty the battery one day if that bus is
not supervised by an intelligent warning system. Any specialist in
electronics out there who is able and willing to invent and build such
a warning (buzzer) system?

I'm not understanding your question. If one wants a
master switch warning, the goal is to sense when the
main bus is hot and the alternator is not supporting
the bus, i.e., engine is not running or alternator is
OFF.
Such a warning device would not require any power from
an always-hot battery bus. The low voltage warning runs
totally from the main bus and the oil-pressure switch
driven warning/hobbs circuit suggested at:
http://www.aeroelectric.com/PPS/Engine/Gaging/Oil P Warn.pdf
. . . gets Hobbs power from the battery bus and warning power
from the e-bus. This arrangement provides Switch-left-on
warning for BOTH the master and the e-bus alternate feed switches
and takes no power from the battery bus when the airplane is
parked.
I'm not understanding where either active notification
of low volts (which you need for other reasons) and/or oil
pressure warning + buzzer (which are also used for other reasons)
would not also serve, individually or collectively to let
you know that you've walked away leaving the master switch
on. Except that low-volts warning does not watch the e-bus
alternate feed switch. However, the oil-p warning does.
Bob . . .

- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
 
nuckollsr(at)cox.net
Guest
PostPosted: Mon Jan 09, 2006 6:30 am    Post subject: Re: Master switch warning Reply with quote

At 09:53 PM 1/8/2006 +0100, you wrote:
<ykibuess(at)bluewin.ch>
Bob,
The warning for main and e-bus is installed as you suggest. However
there is also the always hot battery bus, which feeds the clock in the
MicoMonitor (some few milliamps) and the cabin lights (condiserably more
power). If these lights are left on - it shouldn't happen, but it will
some day - then the battery will be emptied. Thus the idea of a buzzer
that alerts me if the battery bus distributes more than some few
milliamps. Is this a better explanation of the (not so important)
problem?

Understand. Utility items like courtesy lights can
be fitted with on-limit timers. We have these on
some of our bizjets for baggage compartment lights.
More than one important trip was delayed or canceled
because of a light being left on and the battery was
completely flat at pre-flight.
Very light draws you mentioned are continuous,
necessary and generally tolerated if the airplane
is flown often enough. If stored for long periods
of time, disconnecting the battery or installing
a maintainer jack seems useful.
We'll have a programmable on-limit timer in the
new bevy of products coming to aeroelectric.com
Our first two new products are nearing the field
testing phase. I'll see if we can do the on-limit
timer as project #3.
Bob . . .

- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
 
nuckollsr(at)cox.net
Guest





PostPosted: Mon Jan 09, 2006 8:17 am    Post subject: Re: Master switch warning Reply with quote

At 09:53 PM 1/8/2006 +0100, you wrote:
<ykibuess(at)bluewin.ch>
Bob,
The warning for main and e-bus is installed as you suggest. However
there is also the always hot battery bus, which feeds the clock in the
MicoMonitor (some few milliamps) and the cabin lights (condiserably more
power). If these lights are left on - it shouldn't happen, but it will
some day - then the battery will be emptied. Thus the idea of a buzzer
that alerts me if the battery bus distributes more than some few
milliamps. Is this a better explanation of the (not so important)
problem?

Understand. Utility items like courtesy lights can
be fitted with on-limit timers. We have these on
some of our bizjets for baggage compartment lights.
More than one important trip was delayed or canceled
because of a light being left on and the battery was
completely flat at pre-flight.
Very light draws you mentioned are continuous,
necessary and generally tolerated if the airplane
is flown often enough. If stored for long periods
of time, disconnecting the battery or installing
a maintainer jack seems useful.
We'll have a programmable on-limit timer in the
new bevy of products coming to aeroelectric.com
Our first two new products are nearing the field
testing phase. I'll see if we can do the on-limit
timer as project #3.
Bob . . .
AdmID:41E6B28D44CBDC74A30A230B3EA5CBA0

- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
 Back to top
 
nuckollsr(at)cox.net
Guest





PostPosted: Mon Jan 09, 2006 9:52 am    Post subject: Re: Master switch warning Reply with quote

At 09:53 PM 1/8/2006 +0100, you wrote:
<ykibuess(at)bluewin.ch>
Bob,
The warning for main and e-bus is installed as you suggest. However
there is also the always hot battery bus, which feeds the clock in the
MicoMonitor (some few milliamps) and the cabin lights (condiserably more
power). If these lights are left on - it shouldn't happen, but it will
some day - then the battery will be emptied. Thus the idea of a buzzer
that alerts me if the battery bus distributes more than some few
milliamps. Is this a better explanation of the (not so important)
problem?

Understand. Utility items like courtesy lights can
be fitted with on-limit timers. We have these on
some of our bizjets for baggage compartment lights.
More than one important trip was delayed or canceled
because of a light being left on and the battery was
completely flat at pre-flight.
Very light draws you mentioned are continuous,
necessary and generally tolerated if the airplane
is flown often enough. If stored for long periods
of time, disconnecting the battery or installing
a maintainer jack seems useful.
We'll have a programmable on-limit timer in the
new bevy of products coming to aeroelectric.com
Our first two new products are nearing the field
testing phase. I'll see if we can do the on-limit
timer as project #3.
Bob . . .
AdmID:41E6B28D44CBDC74A30A230B3EA5CBA0
AdmID:BF5DDB365800AB851D53AA458BCC54BB

- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
 Back to top
 
nuckollsr(at)cox.net
Guest





PostPosted: Mon Jan 09, 2006 12:00 pm    Post subject: Re: Master switch warning Reply with quote

At 09:53 PM 1/8/2006 +0100, you wrote:
<ykibuess(at)bluewin.ch>
Bob,
The warning for main and e-bus is installed as you suggest. However
there is also the always hot battery bus, which feeds the clock in the
MicoMonitor (some few milliamps) and the cabin lights (condiserably more
power). If these lights are left on - it shouldn't happen, but it will
some day - then the battery will be emptied. Thus the idea of a buzzer
that alerts me if the battery bus distributes more than some few
milliamps. Is this a better explanation of the (not so important)
problem?

Understand. Utility items like courtesy lights can
be fitted with on-limit timers. We have these on
some of our bizjets for baggage compartment lights.
More than one important trip was delayed or canceled
because of a light being left on and the battery was
completely flat at pre-flight.
Very light draws you mentioned are continuous,
necessary and generally tolerated if the airplane
is flown often enough. If stored for long periods
of time, disconnecting the battery or installing
a maintainer jack seems useful.
We'll have a programmable on-limit timer in the
new bevy of products coming to aeroelectric.com
Our first two new products are nearing the field
testing phase. I'll see if we can do the on-limit
timer as project #3.
Bob . . .
AdmID:41E6B28D44CBDC74A30A230B3EA5CBA0
AdmID:BF5DDB365800AB851D53AA458BCC54BB
AdmID:B609605276A005FCEBF50EEF2B5549D3

- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
 Back to top
 
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group