[Milsurplus] ammo can power supply ideas

[jcoward5452 at aol.com]

Greatings Folks,
  About 2 months ago I was at the Dump tossing some scrap metal into the 
big bin,when a fellow recycler came over to me and offered me an ammo 
can (7.62mm) and said I looked like I could use it.(Looked like?) 
Well,of course I can use just about anything for free,so I accepted and 
thanked him for his gift.Well, at about the same time my VRC-7 project 
was coming together and I had a +24V DC Power/Mate Corp .supply to 
operate the radio and I thought the ammo can would make a great 
enclosure for the p.s. Well, time ran out and the West Coast MRCG event 
was upon me and I did not get this idea into the hardware 
stage.Interestingly enough there was a power supply in an ammo can at 
the meet so my idea was not original but now validated.
  Here's what I have in mind since I have a bit of junque box parts to 
put to good use:Supply will be mounted on a plywood base on standoffs 
with an operating panal above,all made up like a sandwich.I will use 
velcro to stick the module to the ammo can floor.(I don't want to drill 
any holes in the can).The panal will have the usual on/off switch,fuse 
holder,pilot lamp, output connector and a voltmeter that a coworker 
gave me yesturday( mil aviation type,full scale 30 volts,working).This 
should look quite Mil-ish when done and thus hide itself in a display 
environment by looking like it belongs there.
  Now, here's the question to the group having never tried this but 
maybe someone has:
  I would like to make this a more versitle supply by having two output 
voltages available: +12 V and +24 V.My thinking is that there are two 
115V AC primary windings so that in parralel one can operate on 115V AC 
or in series one can utilize 230V AC and get the +24 V DC out.If I 
connect in series and just apply 115V AC will the supply deliver +12V 
DC?  Does the regulator pcb need to be modified to do this? Has anyone 
tried this and what sort of trouble will I get myself into?I can accept 
ratings changes and all that.Just don't want to fry the supply trying 
to find out.
 Thanks,
            Jay KE6PPF