Example Signal Circuit

Published:2013/6/13 1:26:00 Author:muriel | Keyword: Example Signal Circuit | From:SeekIC

This circuit is designed to take its input from the switched contacts of two Tortoise® type switch machines that operate a double-slip turnout and covert these to 4 discrete outputs that control 4 sets of 3 aspect signals. One aspect on each signal will show on each signal head depending on how the turnout is set. Because there are four slip switch settings but only three LEDs per signal, one of the aspects on each signal is used twice. In this example the Red LED is used twice for each signal but the other colours could be use twice as well. For a crossover made with two turnouts the signals could be wired so that: Red shows for the blocked route, Green shows for the through route and Greeen/Yellow shows for a diverging route. It is possible to control the the adapter circuit directly from DPDT toggle switches or 556 switch machine driver outputs that operate the switch machine's motors. This would allow both sets of contacts on the machines to be used for frog power.



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