A bipolar clamp for high-frequency surgery, in particular for coagulating tissue, having at least two bipolar clamping parts which are movable relative to one another, defining a grasping region between an open position and a coagulation position and having electrodes for coagulating tissue that is grasped by the clamping parts in the grasping region. The disclosure also pertains to a device that implements charging of a capacitive element according to said method. Furthermore, the disk drive apparatus of the present invention is configured so that the disk is held on both sides or one side thereof by using four or more projections or rubber sheets. In response to determining that the alert setting should be changed, the alert setting for the communication device is automatically changed. Further, an approximated liner line or an approximated curved line is determined from a plurality of frequencies determined for each of the linear line 72.