Circuit arrangement for producing an A.C. voltage

专利名称：Circuit arrangement for producing an A.C.

voltage for driving a pane or panel having avariable light transparency

发明人：Stephan Schulz,Christian Dehnke申请号：US08/759260申请日：19961202公开号：US05724238A公开日：19980303

摘要：A power supply circuit generates an alternating driving voltage for switching apane or panel between a transparent state and a substantially opaque state. The pane orpanel is, for example, a window with a variable transparency in an aircraft cabin divider.The circuit converts a D.C. voltage that is available, for example, from the aircraft's on-board power supply, into a positive and negative D.C. voltage. These voltages passthrough a push-pull output amplifier that is under the control of a clock signal generatorto produce the alternating driving voltage at the output of the push-pull amplifierconnected to transparent electrodes of the pane or panel that contains liquid crystals.Status sensors may influence the operation of the clock signal generator and/or of thepush- pull amplifier.

申请人：DAIMLER-BENZ AEROSPACE AIRBUS GMBH

代理人：W. G. Fasse,W. F. Fasse

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