Abstract: A T-shaped blade, or one or more hollow tubes, are vibrationally excited by one or more piezoelectric elements to generate an airflow from a free end of the blade or tube(s). The airflow may be directed to, or drawn away from, an electronic component to cool the electronic component.

Abstract: A T-shaped blade, or one or more hollow tubes, are vibrationally excited by one or more piezoelectric elements to generate an airflow from a free end of the blade or tube(s). The airflow may be directed to, or drawn away from, an electronic component to cool the electronic component.

Abstract: A T-shaped blade, or one or more hollow tubes, are vibrationally excited by one or more piezoelectric elements to generate an airflow from a free end of the blade or tube(s). The airflow may be directed to, or drawn away from, an electronic component to cool the electronic component.

Abstract: A system is disclosed for controlling multiple input devices, such as VCRs, DVD players and videoconferencing equipment, and at least one output device, such as a projector and a monitor, in a video presentation system. The system includes a processor connected to a user control interface, the multiple input devices and the at least one output device. The user interface is a unified control system for the input and out put devices. A user can select through the user control interface one of the input devices. The processor can determine and control an operating state of the input device, and control the operating state of the at least one output device. The processor can also control the connection of the input device to the output device.