A direct-current to three-phase alternating-current inverter system includes a three-phase motor, a plurality of switching elements, an inverter circuit for the three-phase motor, a capacitor, a direct-current power source and a control circuit. A railcar stop is selectively movable between a first position wherein the railcar is free to travel along the rails, and a second position wherein the railcar stop is configured to engage the tread of the at least one of the wheels to thereby stop and prevent travel of the railcar in at least a first direction along the rails. The proposed DRXDTX configuration schedules transmission andor reception times for a mobile device so that packets for non-real time services are transmittedreceived immediately after packets for real time services. An ink image formed on an intermediate recording medium 7 by a first heating section 500 is re-transferred to the card by the second heating section 300. Processing determines the electrical parameter of the natural medium adjacent to the antenna.