[simpits-tech] 5v AC for lighting?

[Cris Harrison]

On 3/2/2012 2:06 AM, dabigboy at cox.net wrote:
> I have run into a slight dilemma.......all the lighting on the radios/instruments I've managed to get my hands on seem to require 5v AC, rather than DC. One of the units is that TA 7900 Omega CDU I mentioned a couple days ago, and it has integral lighting for the keypad, so changing bulbs/circuits really isn't an option. What's the best way to get 5v AC? Is there a simple/safe way to reduce the AC coming out of the wall? What frequency should it be at? 400hz like the instruments?
>
> Ideally I'd like to make an inverter that runs off 12v DC.....my electronics skills are very limited, I *may* be able to modify one of the 12vdc to 120vac circuits available online to only put out 5v, but I still don't know what frequency it's supposed to be. I sure don't want to toast the lighting on my real airplane gear.
>
> I even tried ebay for aircraft inverters...plenty of 14v, 28,, 30v, 115v, etc, but no 5v. Makes me wonder how it's actually driven in real aircraft.
>
> Matt
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one more thought.. try and get the manual for the beast.. Tracor is now 
BE Systems in VA 703-312-6100
if all else fails... Get out the cutters and make an abortion!
looks like from the shape that it is a CRT needs very high voltages 
(1500v) try and replace it with a LCD and then figure out the keyboard.. 
look at my posts..
http://phoenixcomm.wordpress.com/2011/05/01/arduino2/
http://phoenixcomm.wordpress.com/category/ps2-keybaord/