Circuitron DT-4 Rolling Stock Detector

Circuitron DT-4 Rolling Stock Detector

The CIRCUITRON DT-4 is an advanced, integrated circuit detection circuit that can be used to actuate accessories, light panel lamps, etc. The DT-4 uses tiny OptoSensors mounted between the rails to detect a passing train. No modifications to rolling stock are necessary, and the DT-4 is completely bi-directional. The DT-4 has four independent detection circuits that can be used separately or together to spot rolling stock at various locations. The DT-4 outputs are also ideal for triggering and controlling many other CIRCUITRON items. Revision B of this circuit now has LED indicators on the board for easy adjustment of the sensitivity controls. The DT-4 is designed to provide simplified power supply connections when multiple boards are to be connected together by providing power supply input and output terminals on opposite sides of the board. A section of CIRCUITRON's Printed Circuit Mounting Track (PCMT) can be used to provide simple snap-in mounting of the DT-4 or the corner pads may be drilled out and screws and standoffs used. The DT-4 requires a 10 - 18 volt DC input for proper operation. A filtered DC supply is preferred. If a source of filtered DC is not available, a CIRCUITRON PS-1 or PS-2 can be used to convert the output from the accessory terminals of your power pack to DC. Each output on the DT-4 can control up to 250 ma. of DC current.