12v Supply for MCP and CDU's

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zillmer99
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Location: Yorkshire, UK

12v Supply for MCP and CDU's

Post by zillmer99 »

Hi,

A quick question regarding power supplies for the MCP and CDU's. As supplied they come with individual 12V adapters. Behind my MIP I also have a 12V Bus Bar supplied by a 20A rated 12V transformer which is supplying the LED Strips and the Autothrottle solenoid on the MCP.

I am considering powering the MCP and CDU normal 12V feeds from my Bus Bar rather than the individual switched power supplies.

There is plenty of headroom in the bus bar, so I can't see any problem with this, but I just wanted to check that this seems sensible before I start cutting wires...

Regards

Simon

jackpilot
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Post by jackpilot »

Most of my modules are powered from the PSU

Just make sure you identify correctly the + and - wires beforehand
I always doublecheck with a multimeter as the markings on the wires may differ.
Jack
Full B737-800 DSTD/Sim-Avionics P3d4
ALL FDS & OEMs (+custom TQ)

Jetcos
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Post by Jetcos »

That will work, follow what Jack has suggested.

Positive is the center pin on the plug.
Steve Cos
Vice President and Tech Support
Flightdeck Solutions (FDS)

Stein Aasheim
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Joined: Mon Sep 26, 2016 6:52 pm
Location: ENVA-Norway

Post by Stein Aasheim »

Will it be ok to take 12v from an PSU and connect to the interface cards too?Instead of using the adapters that come with interfacecard (FDS Sys cards) You have one slot for 3 wires beside connector of the adapters.
From left=12V positive
Center=No wire
Right=Ground (Common)
Can someone please confirm on this.

Regard
Stein aasheim

Jetcos
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Post by Jetcos »

Yes that can be done. Board is clearly marked.
Steve Cos
Vice President and Tech Support
Flightdeck Solutions (FDS)

Stein Aasheim
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Joined: Mon Sep 26, 2016 6:52 pm
Location: ENVA-Norway

Post by Stein Aasheim »

Thanks Steve for the quick answear.
Save me some wiring up to the overhead.

Stein

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