power supply mods

I've finished the standard "build yourself a adjustable power supply"
project and some small others. I was looking at this:
http://www.electronics-lab.com/projects/test/014/index.html

I'd like to try this and was wondering about actually adding it to the
power supply. The PS has two 24V center tapped transformers with the
primaries in parallel and the secondaries in series. Right now the
center taps are not used. Could I make use of the centers, couple of
resistors, add another bridge rectifier and supply the input for the
above voltmeter? It does require +-5 volts so I guess it would have to
resemble the schematic at the bottom where they use the 7805/7905 to
get the +-5V.

Just wondering if the above is a doable near future project.


TIA


H. Dixon
.

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