Abstract: A floating hanger for assembling a vehicle body roof sets a roof panel at a home position of a roof surface of a vehicle body which is transferred to a work position along a transfer line. The floating hanger includes: i) a fixing frame fixed to an arm of a robot; ii) a hanger frame configured to restrict the roof panel and installed at the fixing frame to be floatable in a width direction of the vehicle body, and iii) a position corrector installed at the hanger frame and configured to float the hanger frame to a set position of the roof panel by using pressure which is applied to both sides of the roof panel in a width direction.

Abstract: A smart talk mechanism provides feedback information from a driver to a DC-to-DC converter, enabling the DC-to-DC converter to adjust an input voltage for at least one illumination source backlighting the display for increasing the power efficiency.

Abstract: A smart talk mechanism provides feedback information from a driver to a DC-to-DC converter, enabling the DC-to-DC converter to adjust an input voltage for at least one illumination source backlighting the display for increasing the power efficiency.

Abstract: A power amplifier comprises first and second power transistor stages that receive first and second supply voltages, respectively. First and second bias circuits provide the biasing for the first and second power transistor stages, respectively, in response to a reference voltage and a bias voltage.

Abstract: A detecting apparatus of a development cartridge used with an image forming machine which can perform a printing process after detecting whether an appropriate development cartridge is mounted. The detecting apparatus includes a pressing portion formed on a lower surface of the development cartridge, an operation member disposed in the guiding portion to unidirectionally pivot by a predetermined angle by the pressing portion when the development cartridge is mounted on the guiding portion, and a sensor operating when the operation member pivots by a predetermined angle, wherein the detecting apparatus recognizes that the development cartridge is mounted when the sensor operates. The operation member includes a detecting portion pressed by the pressing portion, and a rotation shaft to support the detecting portion to pivot by a predetermined angle, and the sensor is operated by the detecting portion.