----------------------------------------------------------
                           AeroElectric-List Digest Archive
                                      ---
                     Total Messages Posted Mon 06/23/14: 5
           ----------------------------------------------------------
 
 
Today's Message Index:
----------------------
 
     1. 06:01 AM - Re: How to decide if a heat sink is required for a Rect Bridge  (Robert L. Nuckolls, III)
     2. 06:28 AM - Re: LED Ghosting  (user9253)
     3. 07:00 AM - Re: LED Ghosting  (donjohnston)
     4. 09:35 AM - Re: LED Ghosting  (donjohnston)
     5. 11:06 AM - Re: LED Ghosting  (user9253)
 
 
 
________________________________  Message 1  _____________________________________


Time: 06:01:21 AM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: RE: AeroElectric-List: How to decide if a heat sink is     required for
a  Rect Bridge

At 11:07 PM 6/22/2014, you wrote:
>I wanted to have one for each device in case the 
>device eat the diode or the diode eat itself ( I 
>might get power for the diodes from the two 
>regular busses as well instead of the battery 
>busses but then that means I must have a relay 
>energized with just battery power
>Here=99s a clip but I have attached pdf of what 
>I have thus far on the layout=85.
>  p;
>[]
>
>

     Okay. I'm thinking that your present 'state of the system' is
     a bit over-complicated. The purpose of the diode pairs in Z-19
     is to improve on reliability of available power to SINGULAR
     critical loads. I.e. a single ECU has power available from
     two sources which are isolated from each other by the diode
     -OR- pair.

     In your diagram you show two fuel pumps. There's no value in
     providing multiple power sources for both pumps . . .
     your stacking redundancies. Recommend you eliminate
     the lower two diode pairs. Run one pump from engine bus
     through what ever automated controls are available;
     run second pump from main bus with its own, dedicated
     on/off switch.

     This leaves only one diode -OR- pair to boost power
     source integrity for the ECU/IGN systems.


   Bob . . . 

________________________________  Message 2  _____________________________________


Time: 06:28:00 AM PST US
Subject: AeroElectric-List: Re: LED Ghosting
From: "user9253" <fransew@gmail.com>


Dan,
Good going getting your project working to your satisfaction.  
The readers of this forum would love to see a picture of your finished circuit
board and display.
Joe

--------
Joe Gores


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=425318#425318


________________________________  Message 3  _____________________________________


Time: 07:00:20 AM PST US
Subject: AeroElectric-List: Re: LED Ghosting
From: "donjohnston" <don@velocity-xl.com>


Details on the annunicator panel are here:

http://www.velocity-xl.com/blog/2013/08/03/13-99-annunicator-panel/

http://www.velocity-xl.com/blog/2013/08/15/13-99-annunicator-panel-3/


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=425323#425323


________________________________  Message 4  _____________________________________


Time: 09:35:59 AM PST US
Subject: AeroElectric-List: Re: LED Ghosting
From: "donjohnston" <don@velocity-xl.com>


Mission accomplished!

The analyzer alarm LEDs will go out before the others at around 15% brightness.
But above that, those LEDs are the same brightness as the others. I played around
with different resistance values and determined that 18K between the source
and gate provide the widest range and relative brightness.  

Thanks all!!!


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=425328#425328


Attachments: 

http://forums.matronics.com//files/annun_small_165.jpg


________________________________  Message 5  _____________________________________


Time: 11:06:07 AM PST US
Subject: AeroElectric-List: Re: LED Ghosting
From: "user9253" <fransew@gmail.com>


Good job Don

--------
Joe Gores


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=425335#425335


 

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