dim/bright led when testing

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atlas149
Posts: 2
Joined: Mon Feb 14, 2011 6:38 am

dim/bright led when testing

Post by atlas149 »

Hi
connected and tested the IT. I got dim leds when testing.How to get thoses leds bright .Is it a soft or hardware PB
thanks

Jetcos
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Post by Jetcos »

Are we talking B737 OH Dual Brightness annuciators?
Steve Cos
Vice President and Tech Support
Flightdeck Solutions (FDS)

atlas149
Posts: 2
Joined: Mon Feb 14, 2011 6:38 am

dim leds

Post by atlas149 »

Hi
I talking about the ALL leds in 737ng front panel:gear,autobrake ;annonciators,master caution ect...................

JanP
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Post by JanP »

Hi,
any news here?
Jan
Visit my project on Facebook and become a fan http://www.facebook.com/homecockpit

jskibo
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Joined: Thu Jul 15, 2010 11:32 am
Location: Florence, KY

Post by jskibo »

The MIP shouldn't have dual brighness LED's That's the overhead.
John

Jetcos
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Post by Jetcos »

I haven't seen dim LED's here when we build them on the AN1 boards. Are you using our LED's. We use the same ones here and just finished several MIP setups and B737 OH's. No trouble.

We also use a small 3V watch type battery to test each completed AN1 before going on to the next one.
Steve Cos
Vice President and Tech Support
Flightdeck Solutions (FDS)

fly_ebos
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Joined: Thu Jun 18, 2009 6:02 am
Location: Belgium

Post by fly_ebos »

I have solderd my dual brightness annunciators and when I test them with a 3 volt battery, only the dim lights go on.

How can I test the bright is working properly?

GDR
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Post by GDR »

With dim/bright you have 2 wires linked for ground, 1 for the dim state and 1 for the bright state.

So briefly, for standard you need one wire for the ground and one for the led to be lit up. For the dim/bright you have one wire for the ground, one for the dim state and one for the bright state.

http://flightsim737.dyndns.org:8081/Doc ... V2_PCB.pdf

Hope this helps you further. :wink:

Geert.
Geert.

Full B737-MAX DSTD - ALL FDS
Sim-Avionics V1.965
P3D v4.5.13.32097
FSUIPC v5.154

What goes up, must eventually come down!
http://www.flightsim737.be
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http://www.flightsim737ng.be

Jetcos
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Post by Jetcos »

Thanks Geert.

Geert has created a great document to assist with the dim/bright of an AN1.

Did you install the diode in the right direction? The diode is like a "one-way" valve and only allows power to travel one direction (for anyone who didn't know). This eliminates any power back-feeding to the LED's and allows the resister to lower the voltage to the LED giving the Dim lighting.

Hope this also helps?
Steve Cos
Vice President and Tech Support
Flightdeck Solutions (FDS)

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