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After a discussion on basic kinematics and mechanics of Rzeppa type ball joints, the paper focuses on some design solutions provided by the patent literature. In particular a short patent review is carried out. Under ideal conditions the joint is homokinetic. However, geometry errors are inevitably present and nonhomokineticity induces torsional vibrations along the powertrain. For design purposes,...
The success of a new CPV prototype depends on modules quality and assembly compliance with existing Standards, such as IEC 62108, 62670, 62787, and others still under development/approval for performance evaluation. The overall CPV system reliability is based on the quality of the subcomponents such as the optics, the cells, the electronics and the assembly of the whole system, but there is a dramatic...
The design of a very low-current transconductance operational amplifier specifically optimized for a switched-capacitor LCD column driver is presented. Despite its stringent standby current requirements (lower than 700 nA), the amplifier exhibits a DC gain of about 80 dB and, working in class AB, provides a slew rate greater than 20 V/mus under a load capacitance of 500 fF. The gain-bandwidth product...
A new smart power switch for industrial, automotive and computer applications developed in BCD (Bipolar, CMOS, DMOS) technology is described. It consists of an on-chip 70 mΩ power DMOS transistor connected in high side configuration and its driver makes the device virtually indestructible and suitable to drive any kind of load with an output current of 2.5 A. If the load is inductive, an internal...
The device described in this paper is a new quad line driver to be used in the hostile and noisy industrial environment and developed in mixed technology (BCD: Bipolar, Cmos, Dmos). It consists of four independent line drivers, each of which has a rail-to-rail push-pull output stage realized with power DMOS transistors connected in half bridge configuration. Even though the device is designed to be...
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