The present invention displays the light transmissionreception level, the usable amount of remaining power of a utility, or the like, and by means of viewing the display, a user becomes able to easily make a determination, thus increasing the operability of a television camera device. Auxiliary causes transfer of power from first primary to first secondary winding and operation without saturation. The drive device has a multiplicity of constant-current drivers, a selection circuit, and a control circuit. When the temperature of the ballast approaches the Curie temperature of the ferrite core, its permeability, and thus inductance, drops dramatically, causing an increase in operating frequency in the inverter circuit. The method can also include logging an amount of occasions the market participant does not respond within a pre-specified amount of time.