Mallampati et al, proposed a grading system to anticipate difficult intubation, which considers visualization of faucial pillars, soft palate and base of uvula. 4 The upper lip bite test (ULBT) was proposed as a simple bed side technique by Khan et al, which involves the assessment of jaw subluxation and presence of buck teeth. 9 Savva et al, proposed sternomental distance (distance from the su...

Nobel citation makes clear, Buck and Axel not only and Molecular Pharmacology solved the mystery of the olfactory receptors but, in a University of California, San Francisco remarkable series of subsequent experiments, outlined San Francisco, California 94143 the basic organizational principles of the vertebrate ol2 Howard Hughes Medical Institute factory system. More generally, the discovery o...

In this digest, we will present a methodology that allow us to accommodate the conducted Electromagnetic Interference (EMI) generated by power factor correctors to international standards in the design step. EMI filter design considerations and EMI predictive procedures are presented. The predictive procedures are based in a family of curves that allows us to determine the conducted Electromagn...

An integrated buck converter that operates under low voltage environment with fast transient response is presented. The designed buck regulator employs derivative output ripple voltage for sensing current. It is targeted to be fabricated with 180nm UMC technology at 2MHz switching frequency. The response time is less than 2.2μ Sec. The regulator provides an output voltage of 1.8V against the ba...

This paper studies two kinds of simple switched dynamical systems with piecewise constant characteristics. The first one is based on the single buck converter whose periodic/chaotic dynamics are analyzed precisely using the piecewise linear phase map. The second one is based on a paralleled system of the buck converters for lower voltages with higher current capabilities. Referring to the resul...

Dynamic response of a converter plays an important role in many applications which change load in a rapid manner, especially in PoL(Point of load)applicat ions. Here a new method for improving the dynamic response of a converter is presented. Here separate control schemes are implemented during steady state as well as transient load conditions. A three level buck converter topology with fast tr...

This paper presents comparative performance between Analog and digital controller on DC/DC buck-boost converter four switch. The design of power electronic converter circuit with the use of closed loop scheme needs modeling and then simulating the converter using the modeled equations. This can easily be done with the help of state equations and MATLAB/SIMULINK as a tool for simulation of those...

Discrete Pulse Width Modulated controller for buck converter is described. The key building blocks are Analog to Digital converter, compensator, and digital pulse width modulator is introduced to meet the requirement of perfect output voltage regulation, high-speed dynamic response, and programmability. The discrete controller method bypasses errors related to the conversion from the continuous...

D1 D2 S2 Abstract—This paper proposes two types of non-isolated direct AC-DC converters. First, it shows a buck-boost converter with an H-bridge, which requires few components (three switches, two diodes, one inductor and one capacitor) to convert AC input to DC output directly. This circuit can handle a wide range of output voltage. Second, a direct AC-DC buck converter is proposed for lower o...

This paper presents a study of resonant converter topologies targeted for CMOS integration. An improved new method to design efficient monolithic Quasi-Square-Wave converters is proposed. A power loss model of the power stage including the driver circuits used on the design method permits to optimize the design parameters for the power stage and conclude about the technology limitations. Based ...