The human fungal pathogen Candida albicans can switch between two cell types, "white" and "opaque," each of which is heritable through many cell divisions. Switching between these two cell types is regulated by six transcriptional regulators that form a highly interconnected circuit with multiple feedback loops. Here, we identify a seventh regulator of white-opaque switching, which we have name...

Electronic systems became an essential component of our lives. The demand for increased functionality is satisfied by higher integration which, however, make the design process more complex and introduces new problems. These problems must be considered in every step involved in the design of electronic systems. One of these steps is verification checking, whether what is manufactured will work ...

S mall-signal analysis of switching dc-dc converters determines their specific transfer functions, for example, for stability analysis or design of a proper input filter. Transfer functions of interest for switching dc-dc converters are input impedance , output impedance, duty cycle (or control voltage) to output voltage, and input voltage to output voltage. Two pieces of literature about accom...

In this paper, a new soft switching three phase inverter with a quasi-resonant dc-link is presented. The proposed inverter has a dc-link switch and an auxiliary switch. The inverter switches are turned on and off under zero voltage switching condition and all auxiliary circuit switches and diodes are also soft switched. The control utilizes PWM and the auxiliary switch does not require an isola...

The application of MATLAB/SIMULINK is developed for simulation and learning feedback controller design of dc–dc switching converters. With the help of its intuitive graphical user interface and some basic circuit theories, the corresponding SIMULINK models of the switching converter circuits can be easily constructed. Students can then use these models to learn and evaluate the closed-loop beha...

Zero-current (ZC) switching pulse-widthmodulated (PWM) flyback DC-DC converter is an extended version of the single switch flyback converter with an additional active circuit. The purpose of the active circuit is to turn-off the main switch with zero-current switching (ZCS) condition to reduce the turn-off switching loss. This paper presents an overview of the ZCS flyback PWM DCDC converters. T...

The coupling between a 3D modified magnetic vector potential formulation discretized by the Finite Integration Technique and an electrical circuit containing switching elements such as diodes is presented. The changes in the state of the switching elements (“conducting” or “blocking”) are introduced as changes in the topology of the circuit part of the model which results in a structural change...

This paper discuss about PV cell energy based space-vector pulse width modulation (SVPWM) control methods applied for an H-bridge inverter feeding a 3-phase permanent magnet synchronous machine (PMSM) in electric-vehicle (EV) applications. EVs require a high degree of availability continuity of service. Advantages using svpwm minimization of switching losses, balancing of switching rate between...

Technology decomposition and technology mapping are two potential stages for minimizing circuit power during logic synthesis. Since power in CMOS circuits is directly dependent on the extent of circuit switching activity, we present a novel procedure to construct a low-activity circuit structure in the technology decomposition stage. This would result in low-power circuits when mapped. The algo...

This paper studies dynamics of a delta modulator for PWM control. In order to analyze the circuit dynamics we derive a onedimensional return map of switching time. The map is equivalent to a circle map in wide parameter region and its nonperiodic behavior corresponds to undesired asynchronous operation of the circuit. We then present a simple stabilization method of the system operations by mea...