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VIR presentation File
VIR presentation File

... resistance. Insulators, such as glass, porcelain and rubber have a very high resistance. Semiconductors have a medium resistance, neither high or low. Resistance is measured in ohms. A short piece of copper wire has less than 1 ohm of resistance on the other hand a short piece of glass might have a ...
TRANSISTORS AND THYRISTORS
TRANSISTORS AND THYRISTORS

... • Thyristors are devices constructed of four layers of semiconductive material such as the silicon-controlled rectifier (SCR), the diac, and the triac • When turned on (triggered), they become low-resistance current paths and remain, although the trigger is removed, until the current is reduced to a ...
LC5901S DATA SHEET Rev.1.5
LC5901S DATA SHEET Rev.1.5

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Chapter_3_Lecture_PowerPoint

... Source transformations is a procedure that may be very useful in the computation of equivalent circuits, permitting, in some circumstances, replacement of current sources with voltage sources and vice versa. The Norton and Thévenin theorems state that any oneport network can be represented by a vol ...
AD8211 数据手册DataSheet 下载
AD8211 数据手册DataSheet 下载

... and the load (see Figure 25). An advantage of placing the shunt on the high side is that the entire current, including the recirculation current, can be measured because the shunt remains in the loop when the switch is off. In addition, diagnostics can be enhanced because shorts to ground can be det ...
STK534U3xx series  Application Note 1.  Product synopsis
STK534U3xx series Application Note 1. Product synopsis

... This application handbook is intended to provide practical guidelines for the STK534U3xx series use. The STK534U3xx series is Intelligent Power Module (IPM) based upon ONs Insulated Metal Substrate Technology (IMST) for 3-phase motor drives which contain the main power circuitry and the supporting c ...
OPT101: Monolithic Photodiode and Single
OPT101: Monolithic Photodiode and Single

... Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. ...
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... • Ensure proper grounding of all electrical equipment. • If inside an automobile, stay inside the automobile. • If in a small boat, lie down in the bottom of the boat. • If in a metal building, stay in the building and do not touch the walls of the building. • Wear rubber clothing if outdoors. • Avo ...
AND9038 - Efficiency Improvements Using DSN2 Schottky Diodes
AND9038 - Efficiency Improvements Using DSN2 Schottky Diodes

... “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ...
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... refrigerators, vacuum cleaners, freezers, etc. For household appliance, usually we prefer historical classic electric motor technologies such as single phase AC induction motor, including split phase, capacitor-start, capacitor–run types, and universal motor. These classic motors typically are opera ...
FJA4210 PNP Epitaxial Silicon Transistor F JA
FJA4210 PNP Epitaxial Silicon Transistor F JA

... SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: ...
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Metal halide lamps

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AN-9066  UniFET — Optimized Switch for Discontinuous Current
AN-9066 UniFET — Optimized Switch for Discontinuous Current

... Generally, power factor correction circuits have used a boost topology because it is simple and low costs. There are two modes of the power factor correction boost circuit operation. One is continuous current mode (CCM) that has continuous inductor current. This mode has many benefits, like lower co ...
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estimation of voltage ratio, vector - e
estimation of voltage ratio, vector - e

Excalibur Casino Free Drinks
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ADC-11 Terminal Board User`s Guide
ADC-11 Terminal Board User`s Guide

... Choose values of RA and RB so that VADC is approximately +2.5 V when VIN is at its highest. To minimise errors in the measured voltage, VADC, caused by loading of the source voltage VIN, ensure that the combined resistance of RA + RB is much greater than the resistance of the voltage source. If you ...
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ECE1250F14_HWC2new
ECE1250F14_HWC2new

... Use the above data to determine, as well as possible, values for output high (vTh
UG_Power Controller_GB
UG_Power Controller_GB

... intelligent power module contains self-protection function to effectively protect your vehicle power. When the car battery voltage reaches the cut off limit, this device will stop providing power for the NVR and related equipments in order to protect the car battery. Hence, the battery voltage is av ...
EE2003 Circuit Theory
EE2003 Circuit Theory

... 4.3 Superposition Theorem (1) It states that the voltage across (or current through) an element in a linear circuit is the algebraic sum of the voltage across (or currents through) that element due to EACH independent source acting alone. The principle of superposition helps us to analyze a linear ...
RT9363A - Richtek
RT9363A - Richtek

... current. The part integrates current sources and automatic mode selection charge pump. It maintains the high efficiency by utilizing an x1/x2 fractional charge pump and current sources. The small equivalent x1 mode open loop resistance and ultra-low dropout voltage of current source extend the opera ...
AL8807EV2 User Guide - Diodes Incorporated
AL8807EV2 User Guide - Diodes Incorporated

... In normal operation, when voltage is applied at +Vin, the AL8807 internal NDMOS switch is turned on. Current starts to flow through sense resistor R1, inductor L1, and the LED. The current ramps up linearly, and the ramp rate is determined by the input voltage +Vin and the inductor L1. This rising c ...
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Electrical ballast



An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.
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