Steven E. Monsey
A Touch-Tone Relay Controller for Special Effects
You’re the master electrician on a production that involves the use of many special effects, including smoke, lights, horns, bells, and whistles. The director insists that all effects be controlled by the Stage Manager, who is located 200 feet from the stage. Your heart sinks at the thought of running separate control wires for each effect. What do you do?
As long as there can be a split second between the execution of any two effects’ cues, the solution to your problem may be a Touch-Tone Relay Controller. Through only a singe pair of wires, this controller can activate up to sixteen different devices. The schematic of the system is illustrated in Figure ...