A circuit and corresponding method for controlling inrush current in an AC-DC power converter by providing a relay and a control circuit for limiting inrush current efficiently during cold startup, warm startup, and power line disturbance conditions. Current flowing into or out of the battery pack is monitored, and root mean square current is integrated over a time window and compared to a threshold to determine if power needs to be regulated in order to prevent damage to the cells in the battery pack. The player selects one of the categories so that the player controls which decision-making game is played. The first polycrystalline silicon layer remaining after the etch is then patterned to form an electrical interconnect. It is therefore proposed that a suction air or compressed air device be installed in the franking machine at least in the area near the printing head to protect it from dust-like foreign materials, etc.