Patent ID: 6891454

Claim:
A switch for switching over a signal propagation path by contacting or non-contacting a movable member to or from an electrode, the switch comprising: an input port for inputting a signal; a movable member connected to the input port; a first electrode for propagating the signal; a first control power supply connected to the first electrode and for generating a first control signal; a second electrode for blocking off the signal; and a second control power supply connected to the second electrode and for generating a second control signal; the first control power supply provides said first control signal to the first electrode, the movable member being displaced by a driving force generated based on a potential difference between the movable member and first electrode and a potential difference between the movable member and the second electrode, thereby being contacted to the first or second electrode, the movable member is vibrated in a state contacted on the first electrode or the second electrode, the first or second control signal is controlled to apply to the movable member a force in one direction corresponding to a magnitude of an overshot that the movable member displaces beyond a predetermined position.