I use one of these.
http://www.mpja.com/Variable-Dual-0-30V-3A-and-Fixed-5V-3A-Benchtop-Supply/productinfo/29623+PS/
These go out of stock quickly, keep a eye on the link and get one as soon as they get them.
I use one of these.
http://www.mpja.com/Variable-Dual-0-30V-3A-and-Fixed-5V-3A-Benchtop-Supply/productinfo/29623+PS/
These go out of stock quickly, keep a eye on the link and get one as soon as they get them.