Today's Message Index:
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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
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| Subject: | 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
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| Subject: | Re: LED Ghosting |
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
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| Subject: | Re: LED Ghosting |
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
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| Subject: | Re: LED Ghosting |
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
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| Subject: | Re: LED Ghosting |
Good job Don
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=425335#425335
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