Hello Mike
I,m planning to use 2 traco top 60,s. Im planning to do another run of cases in april and i will use those in my projectors. they can deliver 2.7 amps max. You can tie the negative from the first with the positive fom the second and that is your common gnd.
The positive from the first is 24+ and the negative from the second traco is -24. I only use traco,s in my projectors. Xppower is also very good. There are allot more brands that have these 2" x 4" powersupplies. Personally i like traco and Xppower. The efficiency is very good from both brandsDigikey, farnell and RS sell them i think.
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