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GEIGER COUNTER
GEIGER COUNTER

... 4. The scale of this instrument is calibrated in miliiroentgens per hour (abbreviated MR/HR). A milliroentgen is 1/1,000 or .001 roentgen. (A roentgen is the amount of radiation that will ionize one cubic centimeter of dry air at standard temperature, and pressure, to the extent of creating one stat ...
Document
Document

MMSTA06
MMSTA06

... No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Up ...
Document
Document

(DVR) Using Sinusoidal Pulse Width Modulation
(DVR) Using Sinusoidal Pulse Width Modulation

performance analysis of Unified Power Flow
performance analysis of Unified Power Flow

... The ultimate reason that we are interested in power quality is the economic value. There are economic impacts on utilities, their customers, and suppliers of load equipment. The quality of power can have a direct economic impact on many industrial consumers. There has recently been a great emphasis ...
RHRD4120, RHRD4120S
RHRD4120, RHRD4120S

... FIGURE 4. trr, ta AND tb CURVES vs FORWARD CURRENT ...
Measuring and testing equipments for substations P 6
Measuring and testing equipments for substations P 6

... They operate on the principle of injecting an adjustable alternating current into the circuit being tested via a cable loop in short circuit. Connecting an auxiliary contact to the switch being tested allows the trip time to be measured for each current selected. The test is very easily carried out ...
High Efficiency Motor Protection Industry White Paper
High Efficiency Motor Protection Industry White Paper

... The asymmetrical offset is dependent mainly upon at which point on the voltage wave the circuit is energized. If the circuit is energized at a voltage maximum, there is no asymmetrical offset and the inrush current is essentially the LRC for that current phase. However, if the circuit is energized w ...
A Single Phase Adiabatic Clock Generator
A Single Phase Adiabatic Clock Generator

... • Switches can therefore be relatively small and efficient. ...
KST55/ 56 PNP Epitaxial Silicon Transistor
KST55/ 56 PNP Epitaxial Silicon Transistor

... which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. ...
Lecture04 - madalina
Lecture04 - madalina

... Due to a different number of factors (technological factors, reduced costs etc) the real values of the parameters are near to the rated (target) values. By the selective measurements, the manufacturers offers only those components which have the parameters in the some specific limits around the rate ...
0-30 vdc stabilized power supply with current control
0-30 vdc stabilized power supply with current control

... supplies output will be directly proportional to the quality of the transformer). The AC voltage of the transformers secondary winding is rectified by the bridge formed by the four diodes D1-D4. The DC voltage taken across the output of the bridge is smoothed by the filter formed by the reservoir ca ...
SP6699
SP6699

... The SP6699 is a boost DC-DC converter which uses a constant frequency, current mode control scheme to provide excellent line and load regulation. Operation can be best understood by referring to the Figure 1 on the first page or Figure 18 below. At the start of each oscillator cycle, the SR latch is ...
IEEE Memphis Protection-Basics
IEEE Memphis Protection-Basics

Capacitor and EMI Considerations for New High Frequency
Capacitor and EMI Considerations for New High Frequency

... system noise problems if the system contained reasonable amounts of logic chips. The noise created by a microprocessor, databusses, clock drivers, etc. usually swamps out switcher noise. This can be seen very simply by connecting a linear regulator temporarily in place of the switcher. Radiated nois ...
TI P29 Ser ie s
TI P29 Ser ie s

Electrical Engineering Semester - VIII
Electrical Engineering Semester - VIII

docx - PAWS
docx - PAWS

... Discuss the results of the Tungsten lamp circuit. Compare initial lamp resistance with steady state lamp resistance. Compare in-rush (initial) current with steady state current. Is in-rush current higher or lower than steady state current? Explain why in term of initial and steady state lamp resista ...
7_Armando-Maldonado_7
7_Armando-Maldonado_7

... Method for location based on negative-sequence voltage profile along transmission line ...
examination parer electrical contractors
examination parer electrical contractors

06 Lecture #1 - Clarkson University
06 Lecture #1 - Clarkson University

... – 3.6 Long pants must be worn when soldering, using high voltage equipment, or using machine tools. They are recommended for all other activities in the laboratory ...
Using an ammeter
Using an ammeter

... 3. Click on the first site. We are now going to add a voltmeter to the circuit, leaving the ammeter in place. A voltmeter is an electrical device used to measure the potential difference (potential drop or gain) between any two points in a circuit. A voltmeter is wired in parallel with the device th ...
M24098107
M24098107

AU4101266270
AU4101266270

... reactance through this controller. The supplemental controller input (stabilizing) signals could be local (e.g. real power flows) or remote (e.g. load angles or speed deviations of remote generators). If a wide-area network of Synchronized Phasor Measurement (SPM) units is available, then the remote ...
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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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