Circuitron 800-5808 PL-8 Progressive Lamp Circuit

Circuitron Electronics for Model Railroads

The CIRCUITRON PL-8 and PL-12 circuits are used for moving sign- board applications. The sequence for both circuits is the same; only the maximum number of letters (and thus lamps) is different. Either circuit will light signs with fewer than the maximum letters without modifications to the circuit. The Progressive Lamp sequence lights each lamp in succession with all previous lamps remaining on until all lamps are lit. The step speed of the succession is adjustable. All lamps then remain on for a time period (adjustable). Then all the lamps go out for a set time period (adjustable). Finally, all the lamps come on together for a short time (adjustable) and then all go out. The sequence then repeats. The PL-8 and PL-12 include 8 and 12 lamps respectively (12 volt, 3 mm dia.) but other size and voltage lamps may be substituted for specific applications. Construction of the actual sign will depend upon the application and is left to the modeler. The PL-8 and PL-12 are constructed on 3” square printed circuit boards and require a 14 - 18 volt AC or DC supply.

Note: PL-12 shown