[sdiy] power supply

[woody]

Hi, 
I'm trying to replace the power supply in my 
Chroma and have not much expirience in making circiuts to regulate the supply.
The Chroma needs +5 analog 2.5 A
                             +5 digital
                            +12 1 A
                             -12 0.7 A
The +5 anlog needs a reg
The +5 dig needs a reset circuit
The +12/-12 needs a reg
I have seen the rhodes chroma site that discusses how to build one 
But the power sup that I have outputs + 5 3.2 A
                                                       +15 1.5 A
                                                       -15 0.4 A
Any help on how I would go about regulating the supply I have would be most welcome.
Thanks
Greg
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