MODEL_RAILROAD_TRACK_CONTROL_SIGNAL

Published:2009/6/23 4:30:00 Author:Jessie | From:SeekIC

When a train passesS1 (a red switch), a small magnet glued to the underside operates Sl and causes UI to generate a pulse, activating relay K1 and changing the signal from green to red. After a time determined by RI and C1 (see table), the relay de-energizes and the signal goes back to green.



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