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September 2009 - 3mm × 3mm, 16-Bit ADC Brings Accurate, Precise High Side Current Sensing to Tight Spaces
September 2009 - 3mm × 3mm, 16-Bit ADC Brings Accurate, Precise High Side Current Sensing to Tight Spaces

... Power monitoring circuits are increasingly used throughout automotive, industrial, communications and computing applications as electronics designers strive to continually improve thermal performance, increase efficiency and generally make their products more “green.” The problem is that power monit ...
PP20-SP20_pdf - Acuity Brands
PP20-SP20_pdf - Acuity Brands

... requires 40 mA during the on state. Low voltage remote sensors typically require 3 mA when detecting occupants, and 0.15 mA when in standby. Therefore, each transformer can handle up to 3 relays (including the relay(s) inside the power pack). For example, one PP20 can power its relay (40 mA) and 110 ...
Supply Voltage Drop on Fast Current Demand
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... allow the same voltage reference for all circuits, the output connection from the output capacitor to the different loads must be done in star configuration. To prevent short input voltage switch-off, an additional large size input capacitor can be used with a serial diode between the input voltage ...
Download T2400 Datasheet
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... The T2400 3-Phase Dual Overcurrent Relay includes two combined overcurrent relays, designed for protection or monitoring of generators and power transmissions. A typical application is to use one of the overcurrent functions to trip the generator circuit breaker, and the other overcurrent function t ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,

... users of electric power have to become familiar with the signatures of different waveform distortions produced by specific harmonic sources. This will facilitate the establishment of better methods to confine and remove them at the sites where they are produced. In doing this, their penetration in t ...
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Types of DR Island Systems - IEEE Standards working groups

...  Full load pickup can be up to 6x normal load  May require load control and/or the ability to parallel multiple generators before load connection  Could have systems that carry through on grid fail, but cannot perform a cold load pickup  Turbines have little peak capability.  Recip machines typ ...
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A Simple Fuzzy Excitation Control System for Synchronous Generator

...  The stable systems mean the ability of the system to damp the power oscillatory to a new steady state in finite time. The addition of power system stabilizer is to damp the oscillation of power system. This is shown by the result of the simulation. By comparing the output active power for differen ...
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Prime: kW 35 kVA 44 Ratings Range — 60 Hertz Operation Genset

... RATINGS: All three-phase units are rated at 0.8 power factor. All single-phase units are rated at 1.0 power factor. STANDBY RATINGS: Standby ratings apply to installations served by a reliable utility source. The standby rating is applicable to varying loads for the duration of a power outage. There ...
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Trayer Switchgear Offers Utilities Optional 10 Cycle- or 10

... Due to the high cost of energy failures and the increasing reliance of consumers on uninterrupted service, utilities are increasingly integrating SCADA and automation functionality into the existing grid—as evidenced by a significant trend among hospitals, manufacturers, universities and other premi ...
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... is small => develop a linear r/ship between ac vBE and ac iB.  This r/ship corresponds to the slope of curve at Q-point.  Slope at Q-point is inversely proportional to a small-signal ...
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Interharmonics - Working Group

... Cycloconverters can be thought of as a special case of a more general class of power electronic device - the Static Frequency Converter. Static frequency converters transform the supply voltage into ac voltage of frequency lower or higher that the supply frequency. They consist of two parts, the ac- ...
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Electrical engineering presentation

... – Power is supplied from traction substations to trains by means of the overhead wiring (OHW) system – Trains collect current through pantographs sliding under the contact wire – Current returns to the substations via traction rails ...
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... When installed in the end-use equipment, consideration shall be given to the following: 1 - These devices must be mounted in a suitable end-use enclosure. 2 - The terminals have not been evaluated for field wiring. 3 - Low voltage circuits are intended to be powered by a circuit derived from an i ...
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Physics 517/617 Experiment 6A Digital Circuits
Physics 517/617 Experiment 6A Digital Circuits

... OR Gate (7432), and Exclusive OR Gate (7486). Use the lamp switches on the DIGI designer to signal a high or low state. What is the output voltage of a high or low state? 2) Verify the truth table for the JK flipflop (74S112) including reset and clear options. 3) Using 3 J-K flipflops build a circui ...
KB ELECTRONICS, INC. 12095 NW 39th Street, Coral Springs
KB ELECTRONICS, INC. 12095 NW 39th Street, Coral Springs

... Low voltage leads such as potentiometers, inhibit and enable circuits, start/stop and reversing commands can be further divided into two groups, switching and analog signals. These leads can be run together as long as the analog signals (potentiometer or voltage following) are shielded from the swit ...
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1321TH 13 GHz Bandwidth 2 GS/s THA

... The 1321TH track-and-hold amplifier is designed for high precision sampling of wideband signals with multi-GHz frequency content. The master-slave architecture integrates two track-and-hold (T/H) circuits, clock mode selection logic, and a 50 Ω differential output buffer. Sample rates up to 2 GS/s a ...
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SpiceAss[2] - simonfoucher.com

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Will Reducing The Line Voltage Save Energy?

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implementation of 5-level cascaded h-bridge multilevel inverter with
implementation of 5-level cascaded h-bridge multilevel inverter with

< 1 ... 1113 1114 1115 1116 1117 1118 1119 1120 1121 ... 1265 >

Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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