Voltage sag is a serious power quality problem affecting domestic, industrial and commercial customers. Voltage sags may either decrease or increase in the magnitude of system voltage due to faults or change in loads. In this paper a switch mode AC BuckBoost regulator is proposed to maintain voltage across a medium size domestic appliance constant during long period of voltage deviation from th...

A high PSRR full on-chip and area efficient low dropout voltage regulator (LDO), exploiting the nested miller compensation technique with active capacitor (NMCAC) to eliminate the external capacitor and improve the high performance. A novel technique is used to boost the important characteristic for wireless applications regulators PSRR. The idea is applied to stabilize the Low dropout regulato...

This paper presents an integrated AM/FM active antenna for car radio with on-board battery voltage regulator. The proposed system uses a minimum number of external components, thus reducing cost and increasing yield. The prototype fabricated in a 0.8 μm double-metal, double-poly BiCMOS process, consumes 30 mA from the 5 V regulated supply and exhibits an IP3 better than –60 dBc with two 100 dBμ...

The application of the average current mode control (ACMC) to a new type of very efficient post-regulators is studied in this paper. This post-regulator, called series-switching post-regulator (SSR), has recently been proposed to improve the dynamic response series-switching of power factor correctors (PFC). The post-regulator exhibits very high efficiency due to the fact that only a part of th...

Today’s Voltage Regulator Modules (VRMs) face increasing design challenges as the number of transistors in microprocessors increases per Moore’s Law. These challenges have recently become even more demanding as microprocessors operate at sub voltage range at significantly high current. This paper presents a new multiphase topology with cell configuration for improved performance in low voltage ...

This paper presents a customized wireless power management microsystem for endoscopic capsule robot. The microsystem is composed of a rectifier, a regulator, a battery charger and A low Dropout (LDO) regulator. The electromagnetic energy signal received from a self-resonant coil is rectified and then regulated to generate a stable DC voltage for charging the Li-ion battery. Stable DC voltage is...

Wang Liang (Department of Control Science and Control Engineering, Huazhong University of Science and Technology, WuHan, 430074, P.R.China, E-mail: [email protected]) [Abstract] Climate modification measures to counteract global warming receive some more new attentions in these years. Most current researches only discuss the impact of these measures to climate, but how to design such a clima...

Avhandlingen baseras på följande arbeten: I Rung JP, Carlsson A, Rydén Markinhuhta K, Carlsson ML (2005) (+)-MK-801 induced social withdrawal in rats; a model for negative symptoms of schizophrenia. Carlsson ML (2007) Effects of (-)-OSU6162 and ACR16 on motor activity in rats, indicating a unique mechanism of dopaminergic stabilization (submitted). The dopaminergic stabilizers (-)-OSU6162 and A...

In this article we propose a new algorithm for time synchronization in wireless sensor networks. The algorithm is based on linear regression to achieve long-term synchronization between the clocks of different network motes. Since motes are built using low-cost hardware components, usually their internal local clocks are not very accurate. In addition, there are other effects that affect the cl...

For many years, the importance of active feedback control of large space structure (LSS) have been widely recognized. This paper presents results on studying the attitude control problem for an LSS typified by the ETSVI (Engineering Test Satellite-VI) spececraft. The attitude control system based on the statefeedback control is proposed. The control law is designed by using the turn over design...