If you ever wondered what type of Power Supply can operate Lionel Electric Switches, or how much power they consume when the position is changed, you will find this video informative. This video shows a Lionel #1121 Switch is operated from both a ZW Transformer and a DC Laboratory Supply while voltage and current are simultaneously measured. Last, an 8-cell battery pack is shown activating the switch, and the resulting limitations are noted. Our Books are available for purchase at www.ChooChooVille.com or directly from Amazon.com--Key words: Lionel Electric Switch, O-gauge, operating train details, vintage model train, run toy train, track test, computer control, battery power