Power Supply

The power consumption of a flight simulator installation can become quite high, depending on the number of computers, monitors, projectors and other consumers. Supplying all of them via a single power cable and a daisy chain of multiple socket outlets might not a very good idea. The wiring might get hot and problems can occur including fire. Hence the projection of the electricity supply should be a mandatory part of a flight simulator project. Another aspect for safety is a correct protective earth wiring.

Electrical Setup
The power supply of the complete installation is subdivided into several 230V AV circuits. From the house fuse panel 3 dedicated power lines, each fused with a 16A B-Type circuit breaker, are available exclusively for the flight simulator room:

Line 1: Flight deck
Line 2: Computer rack and projectors
Line 3: Power-line network adapter

Plugging the power-line network adapter to a dedicated power line increased the data throughput by approx. 25%. 

Flight Deck Power Supply
Inside the electronic compartment of the flight deck the 230V power line is subdivided into 2 circuits. Each of the circuits has its own 10A automatic circuit breaker. The circuit breakers are followed by an electrical contactor. This contactor acts as the main power switch of the flight deck. The contactor is controlled by a RF hand remote control. So I can switch on / off the flight deck very comfortable just by pressing a small pushbutton on the remote control. Other channels of the remote control or used for different purposes, e.g. to control the ambient light.

10 A circuit breakers, control light, contactor and RF receiver for remote control (upper right corner of the image)

Multi-outlet power strips with 230V. One of them provides permanent voltage and the other one gets activated with the battery switch 'ON'.

The internal power supplies are providing the following voltage ranges:

230V AC
+12 V DC
+5 V DC

+5V / +12V DC
The +5V and the +12V DC power supplies are available twice each.  I use 2 standard ATX PC power supplies for that purpose. With activating the flight deck one of the ATX power supplies gets immediately active and supplies the interfaces boards and some other circuits. The second ATX power supply gets active with the battery switch of the overhead in its 'ON' position and supplies e.g. the backlit of the MIP and AFT electronic panels, and cooling fans..

230V AC
The same applies to the 230V AC circuits: One becomes active immediately, the second one gets activated with the battery switch in the 'ON' position. Physically the 230V are switched by a 25 ampere semiconductor relay.

Conrad: http://www.conrad.de/ Search for 'Elektronisches Lastrelais CW-Serie Crydom CWD2425', Best.-Nr.: 505184 - 62

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Last Change: August 2011