[Al Skierkiewicz]

There are various rules that may come into play on this one. Solenoid actuators and transmitting devices other than the radio modems and a specific signaling device for the hybrid mode are specifically prohibited under current rules. And as Alan has pointed out, R53 most certainly applies. As to some of the previous posts, Tesla coils included, all are fairly lossy devices and/or require rather large electromagnetic fields to operate. Although cool and an interesting way of supplying power to rotating mechanisms, they are likely just too inefficient for use on a robot. Please check into the 60 watt light bulb and look closely at the power input required to light the bulb.
BTW, the circuit used to keep the display from blanking for the Kilobytes is considered a custom circuit and does follow the robot rules in that is specifically does not control any motors or actuators on the robot and thus follows R53. In a similar fashion, the power supply that some teams use to power decorations like the CCFL tubes also modifies the power supply but does not connect to any control on the robot.