How to Convert Battery Powered Electronics to Run on AC Power

We use a lot of battery power electronics. And they go through a lot of batteries. But some of them don't necessarily need to be powered by batteries. If your electronics tend to stay in the same general area, then there is no reason why they couldn't be powered by AC. This would let you save a lot of batteries and money. Here is how to do it.

Instructable: http://www.instructables.com/id/Convert-Battery-Powered-Electronics-to-Run-on-AC/