摘要:
An illuminating display apparatus has a flexible sheet formed with two independent recessed areas separated by a wall. The sheet is formed with a raised perimeter surface surrounding the recessed areas. A porous wall separates one of the recessed areas into a first and a second open compartments. A closed container of a frangible material is placed within one of the compartments and the container is filled with a first chemiluminescent fluid. A second rigid sheet has a first surface area portion that is either transparent or translucent; and a second surface area portion that is opaque. The two sheets are bonded together forming closed compartments within one of which the frangible container is held in place. The compartments are filled with a second chemiluminescent fluid. When the flexible sheet is pressed toward the rigid sheet, the frangible container is fractured releasing the first fluid which mixes with the second fluid to generate chemiluminescent illumination which is seen through the non-opaque portions of the first sheet by a viewer as a colorful and bright design.
摘要:
A cost effective circuit improves the cross regulation of multiple outputs converter, especially for that output chokes are coupled and a synchronous rectifier is applied to one of the outputs. A DC/DC converter includes a transformer having a primary winding and two secondary windings. The first secondary winding is coupled to a synchronous rectifier and a first output choke. The second secondary winding is coupled to a diode rectifier and a second output choke. The first output choke and the second output choke are coupled. A low power MOSFET switch is added to the diode rectifier for avoiding the diode rectifier operating in DCM when light loaded.
摘要翻译:成本有效的电路改善了多输出转换器的交叉调节,特别是对于输出扼流圈耦合,并且将同步整流器应用于其中一个输出。 DC / DC转换器包括具有初级绕组和两个次级绕组的变压器。 第一次级绕组耦合到同步整流器和第一输出扼流圈。 第二次级绕组耦合到二极管整流器和第二输出扼流圈。 第一输出扼流圈和第二输出扼流圈耦合。 低功率MOSFET开关被添加到二极管整流器,以避免二极管整流器在轻载时在DCM中工作。