Some form of bench power supply like this: http://www.technobotsonline.com/13.8v-2 ... upply.htmlOriginally Posted by PJ-27
Or, provided you get one with the right voltage/current characteristics and make up appropriate connectors, a basic plug-in transformer would do: http://www.technobotsonline.com/9v-1.5a ... upply.html
Lastly, the method I use when the batteries are low, a modified PSU from an old computer:
[attachment=0:kihv0cmy]DSCN6203.JPG[/attachment:kihv0cmy]




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