This Power Supply is suitable for use with VCOs and more "analog" modules. It is of course quite capable of driving the noisier digital modules too.
Note: this project may require wiring a transformer to the A.C mains. This is best left to people who are qualified to do so. Where possible, use a plug-pack, wall-wart or line-lump, or other product where the mains wiring has already been done.
CGS66 Datasheet and Build Guide