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Danny Well you have possibly told me something i did not know. I thought you were quite wrong about 7V DC operating LGB switchdrives but as i have never tried i cannot argue with you. However when you use track contacts they pulse it across with half wave DC, as result of putting a sigle diode in series with an AC supply of about 22V. So i guess that is DC at about 12V very roughly. How long have you been doing it for and have you had any ill effects? Do you have DC across the motor all the time and how do you get a reversal of direction for the switch; reverse your polarity? You learn something new every day or even, you realise something you should have known all along. I can tell you what they will not work off and that is DCC! Rgds ian
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