True2scale
True2scaleTrain modeling components
This circuit board controls the timing and lighting of traffic lights. Two sets
of outputs allow for the connections of traffic light posts. One set of
connections are for your North and Southbound lanes, who will be receiving a
Green light, while the other connections are for your East and Westbound lanes
who will be receiving a Red light.
After about 25 seconds, the green lights will change to a yellow (caution) signal for about 4 seconds, then to red at which time the crossing lanes will receive the green light. Timings are fixed and are made a little faster than prototypical lights, so that observers need not wait forever to view the effect.
The two leads at the center left (Red and Black) are the power leads. This circuit will require a 12 Volt DC source. Although 12 volts are recommended any power source from six to about twenty-four volts can be used. However, brightness and number of lights that can be powered will be affected by the power source being used. The red lead is for the +12V power input. The Black lead is power ground.
A single controller circuit is capable of controlling the lights at approximately three intersections. This assumes a twelve volt power supply and four lights at each intersection. If more than three intersections are to be supported, additional controller circuits will be required.
The circuit has been designed to allow for the use of light posts which use bulbs instead of the LED posts available from us. However, since bulbs draw more current, only one intersection of lights can be connected to a controller when bulbs are being used.