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Neutral Switching Transients
Neutral Switching Transients

... It is reasonable to ask about the likelihood of a ground fault occurring during the short time that the neutral contacts are overlapped. Certainly it is as likely as any other time, but perhaps it is slightly more likely during the period of the transition for the following reasons. As those who per ...
MAX9921 Dual, 2-Wire Hall-Effect Sensor Interface with Diagnostics General Description
MAX9921 Dual, 2-Wire Hall-Effect Sensor Interface with Diagnostics General Description

... two 2-wire Hall-effect sensors to a low-voltage microprocessor (µP). This device supplies and monitors the current drawn by two Hall-effect sensors, filters the sensed current level, and outputs the corresponding logic level. The MAX9921 includes input diagnostics and fault protection. These feature ...
Using Monolithic High Voltage Gate Drivers
Using Monolithic High Voltage Gate Drivers

... − IGBT gate-source leakage current (ILK_GE); − Floating section quiescent current (IQBS); − Floating section leakage current (ILK) − Bootstrap diode leakage current (ILK_DIODE); − Desat diode bias when on (IDS- ) − Charge required by the internal level shifters (QLS); − Bootstrap capacitor leakage c ...
How the voltage reference affects performance
How the voltage reference affects performance

... goal is to have a working design at the end of the day. Given the array of different components in a system, designers must have a complete understanding of not only the individual components but also their impact on the overall system performance. When a design has an analogto-digital converter (AD ...
CP900/1300/1500EPFCLCD User’s Manual K01-0000331-00
CP900/1300/1500EPFCLCD User’s Manual K01-0000331-00

GENERAL PRODUCTION TECHNOGEL
GENERAL PRODUCTION TECHNOGEL

... • The mixture is pumped at very high pressure (up to a maximum of 250 Bar) through a small orifice which, as a result of the extrusion, homogenizes the mixture. • The homogenizing portion (impact head and counter-head) is made from special abrasionresistant material. • The homogenization pressure is ...
IC design of low power, wide tuning range VCO in 90 nm CMOS
IC design of low power, wide tuning range VCO in 90 nm CMOS

... Figure 7 shows that the capacitance slope is greater between the tuning voltage values of 0.8 and 1.0 V; the external noise will degrade the phase noise easily. In order to suppress the effects of external noise, two 5 pF on-chip bypass capacitors are connected in parallel with the voltage control p ...
PowerFlex 750-Series Power Jumpers Installation
PowerFlex 750-Series Power Jumpers Installation

Transient analysis of mixed wind parks with different turbine types1
Transient analysis of mixed wind parks with different turbine types1

... source of energy for many people. In Brazil, wind is the fastest growing source of power generation with an installed capacity of 6 GW at the end of 2014, representing 4.5% of the country's total installed capacity [1]. There are two main popular wind power technologies in the world: fixed speed tur ...
lecture1423726011
lecture1423726011

S225-10-5
S225-10-5

... 55/65°C temperature rise rating of the regulator. The sealedtank system along with the 65°C rise winding insulation allows the regulator to be used at this dual rating. This provides an additional 12 percent capacity without loss of normal insulation life. The nameplate is stamped with pertinent rat ...
- WestminsterResearch
- WestminsterResearch

... have the same mathematical model, apart from their parameter differing. Even though the function of systems are different, their prognostics still can be assigned to each other on the basis of dual relationships found between the systems, along with having the same mathematical model with dual param ...
Chapter 8 Electrical Power 8.1 Introduction
Chapter 8 Electrical Power 8.1 Introduction

... protection using separate and independent current and control circuits. Normal and alternate preferred power conductors located between the Fermi 3 UATs and RATs and the 345 kV switchyard buses are protected by dual high-speed current differential schemes. The 345 kV switchyard circuit breakers are ...
Experiment #3
Experiment #3

... being measured and since elements in parallel have the same potential differences a small amount of current goes to the meter, enough for the meter to make a measurement. The remaining (larger amount) of current passes through the circuit element. To measure the current flowing through a circuit ele ...
current monitor - NRSGA National Railway Supply
current monitor - NRSGA National Railway Supply

... display) and turn the sensitivity adjustment slowly counterclockwise until the relay opens. Turn the sensitivity adjustment 1/8 of a turn clockwise from this switching point. If the relay will not open when turned fully counterclockwise, then just turn back 1/8 of a turn from that position. ...
Zahn, M., Transient Drift Dominated Unipolar Conduction Between Concentric Cylinders and Spheres, IEEE Transactions on Electrical Insulation, EI-11, 150-157, 1976
Zahn, M., Transient Drift Dominated Unipolar Conduction Between Concentric Cylinders and Spheres, IEEE Transactions on Electrical Insulation, EI-11, 150-157, 1976

... special importance when, for example, sufficiently high voltages are applied to insulators and electrical breakdown occurs. However, the breakdown begins after the voltage crest. This time delay to breakdown coupled to time-of-flight measurements of charge-carrier mobilities [4] , obtained from peak ...
IECSTD - Version 3 - المنظمة العربية للتنمية الصناعية والتعدين
IECSTD - Version 3 - المنظمة العربية للتنمية الصناعية والتعدين

... 712.433.1 Overload protection may be omitted to PV string and PV array cables when the continuous current-carrying capacity of the cable is equal to or greater than 1,25 times I SC STC at any location. 712.433.2 Overload protection may be omitted to the PV main cable if the continuous current-carryi ...
Ti-states: Processor Power Management in the Temperature
Ti-states: Processor Power Management in the Temperature

Optimum DC-Link Solution in HVDC Wind Park Actively
Optimum DC-Link Solution in HVDC Wind Park Actively

... impedance is big enough. For grid connections with lower reactance of the source impedance, as is often the case in distribution cables, the voltage level is not sensitive to changes in reactive power, but more depending on the active power flow [18]. If actively controlled, HVDC wind parks will be ...
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)

... Successive Approximation Register Analog-to-Digital Converter (SAR ADC) compares the input voltage and output voltage of an N-bit digital-to-analog converter (DAC) with only one comparator. The output voltage of DAC is used as a reference voltage; SAR ADC can get the final conversion result through ...
Solution original
Solution original

High Voltage Induction Motors
High Voltage Induction Motors

... insulated to prevent damage from circulating shaft currents. Where appropriate to suit output, duty, ambient conditions or customer-requested, oil lubricated sleeve bearings may be specified either as self-contained or force lubricated. Depending on frame size, sleeve bearings may be either endshiel ...
U6DNC Nixie Clock Kits - Sphere Research Corporation
U6DNC Nixie Clock Kits - Sphere Research Corporation

... capable of doing this level of assembly and testing. Once again, if you feel this does not describe you, please stop and return the kit for a refund. We would prefer to refund your money than have you lying unconscious on the floor, with your heart stopped, or some similar untimely end. Software: Th ...
Paper Title (use style: paper title) - Infoscience
Paper Title (use style: paper title) - Infoscience

... [2], authors find that it can achieve 1.8 times more GBW than a miller compensated amplifier for the same phase margin and power consumption. Another benefit of the cascodecompensated amplifier is its low area. This is because the compensation capacitor is relatively smaller than the one in the stan ...
ISL9K460P3 8 A, 600 V, STEALTH II Diode —
ISL9K460P3 8 A, 600 V, STEALTH II Diode —

... for low loss performance in high frequency hard switched applications. The STEALTH™ family exhibits low reverse recovery current (Irr) and exceptionally soft recovery under typical operating conditions. This device is intended for use as a free wheeling or boost diode in power supplies and other pow ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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