In the following paper, a new innovative design in which simple and effective components are utilized in a circuit that enhances the capabilities of the portable power banks available in the market is discussed. Components such as DC voltage regulators and USB cable have been used to create a circuit that has more utility compared to products available in the market. It offers additional advant...

This paper presents a multi-story power delivery scheme which shows significant reduction of supply noise and power consumption compared to conventional power delivery scheme. To maximize the effectiveness of the proposed scheme, a digital voltage regulator is designed to balance the current dissipation of circuits in different voltage domains. Data transfer circuits based on capacitive couplin...

This paper examines the proper application of three phase induction motors when supplied by unbalanced voltage. To analyze the effects of unbalanced voltage on torque of the induction motors, it has defined 32 unbalanced points, with 8 different types of voltage unbalance, and four levels of Voltage Unbalanced Factor, measured with Symmetrical Components method. In each unbalanced point the Tor...

In this paper, an analytical threshold-voltage (Vt) model derived from Poisson equation for NMOS devices with a strained-silicon channel is described in terms of band, material, doping, and structure parameters and validated with Medici simulations. The model equations are derived based on bulk reference to preserve the symmetry of the model, and extended to short-channel devices based on previ...

• The circuit used for the phase angle control in triac-based single-phase ac regulators (ac to ac voltage converters) • The operation of the various blocks used in the circuit, along with the waveforms • The harmonic analysis of the output voltage of a single-phase ac regulator with resistive load

Unbalanced voltages are unequal voltage values on 3-phase circuits that can exist anywhere in a power distribution system. Unbalanced voltages can cause serious problems, particularly to motors and other inductive devices. Perfectly voltage-balanced circuits are not possible in the real world. However, assuming perfectly balanced voltages are possible, branch circuit voltages on a 480/277V supp...

The “Power Quality” term is widely used in recent years in power system field. Voltage sags is one of the power quality issue, which is also known as dips, are important to industrial reliability. This paper presents a power world simulation approach to find the voltage sag magnitudes in power system network. In this paper, investigations have been conducted on a sample distribution system mode...

Modern power system networks use active power filters for compensation of harmonic currents generated by non linear loads. In this paper a new method for generating reference currents for harmonic and reactive power compensation is proposed. The proposed method has the advantage that it generates the reference currents irrespective of the supply voltage and load conditions. So the source has to...

We start this lecture by providing an optimization view of electrical flows in terms of an energy minimzation problem over voltages. While in the last lecture, we fixed the current going from s to t, we are now going to fix the voltage gap between s and t to one. In this scenario, always assuming G is connected, some current will flow from s to t, inducing some voltages over G. It turns out tha...

Portable, embedded systems place ever-increasing demands on high-performance, low-power microprocessor design. Dynamic voltage and frequency scaling (DVFS) is a wellknown technique to reduce energy in portable systems, but DVFS effectiveness suffers from the fact that voltage transitions occur on the order of tens of microseconds. Voltage regulators that are integrated on the same chip as the m...