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- LJMU Research Online
- LJMU Research Online

... the amount of voltage available at the output. This is indeed perceived as the most favorable feature of this topology since it means that, for a given motor rated voltage, dc bus voltage has to be just over 50% of the value which would have been required in single-sided supply mode with, say, a thr ...
DCDC Converter SupIRBuck IR3846
DCDC Converter SupIRBuck IR3846

... optimizing the design in terms of size and performance. IR3846 provides precisely regulated output voltage programmed via two external resistors from 0.6V to 0.86*PVin. The IR3846 operates with an internal bias supply (LDO) which is connected to the VCC pin. This allows operation with single supply. ...
SLIC Devices
SLIC Devices

... path. This path is split between the signal transmission block and the two-wire interface block. The AC line voltage is sensed by differential amplifiers between the A and HPA leads, and between the HPB and B leads. The outputs of these amplifiers are equal to the AC metallic components of the line ...
improvement of thd using fuzzy logic based pwm modulation
improvement of thd using fuzzy logic based pwm modulation

... magnitude. Simulation result exhibits that the converter has following performance features: Both the input currents and output voltages are pure sine waveforms with the harmonics around or above the switching frequency. The converter is capable of operating at unity power factor. Four quadrant oper ...
Charge Pump Flash LED Driver
Charge Pump Flash LED Driver

... the cathode(s) of the LED package and a low resistance sense resistor (typically 1.25Ω). The ISET pin monitors the voltage at the cathode and signals the charge pump to increase or decrease the output current until the ISET voltage reaches the programmed setting. The resistor value is chosen to ...
Indonesia - SHS Specifications-Sept_2002
Indonesia - SHS Specifications-Sept_2002

... end-of-life will be determined when the battery capacity down to 1.75 V/cell at 25 degrees centigrade drops to less than 80 percent of the initial rated capacity. All warranties will start from the day the system is accepted by the user. 1.2. Nominal system voltage (rated voltage) shall be 12 Vdc. 1 ...
3 The MOS Transistor Inverter Dynamic Characteristics
3 The MOS Transistor Inverter Dynamic Characteristics

... 3.3 Transistor Turn-On and Inverter Fall-Time In this case, the transistor conducts and plays an active role in discharging the capacitance by drawing charge from it. The waveform of the output voltage is shown in Fig. 3.2. Initially the output voltage will be at the supply voltage, VDD, with the c ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

Charge Equalization Based-on Three-Level NPC Converter
Charge Equalization Based-on Three-Level NPC Converter

2_marks_with_ans_fe28f - e
2_marks_with_ans_fe28f - e

... register (SAR), to find the required value of each bit by trial & error. With the arrival of START command, SAR sets the MSB bit to 1. The O/P is converted into an analog signal & it is compared with I/P signal. This O/P is low or high. This process continues until all bits are checked. ...
MP26053 - Monolithic Power System
MP26053 - Monolithic Power System

... 3.0V CC-> CV) Figure 2 shows the typical charging profile for the MP26053. For a fully depleted battery with a terminal voltage lower ...
Evaluation Board User Guide UG-116
Evaluation Board User Guide UG-116

... By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the An ...
SERVICE Manual
SERVICE Manual

... for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections. (d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generati ...
gate solved paper - ee
gate solved paper - ee

Electrical Safety
Electrical Safety

... Equipment moved from cold room can get condensation on its internal electrical circuits. Avoid this movement, Use L.T. and give lots of time to ...
AAT4672 数据资料DataSheet下载
AAT4672 数据资料DataSheet下载

... and MAIN pin voltage is greater than the AUX pin voltage plus 200mV. The AUX pin connects to the OUT pin only when the MAIN pin voltage drops 0.2V below the AUX pin voltage and the AUX pin voltage is greater than the UVLO threshold. If both input supplies (MAIN/AUX) are below the UVLO threshold, the ...
AN-847 APPLICATION NOTE
AN-847 APPLICATION NOTE

... Referring to Figure 3, with a system supply value (VDD) of 3.2 V, the user can program the AD5933 output ac excitation voltage of the AD5933 to be one of four values (2 V p-p, 1 V p-p, 400 mV p-p, or 200 mV p-p) by setting Bit D10 and Bit D9 in the AD5933 control register (see the AD5933 data sheet ...
RS-485: Passive Failsafe for an Idle Bus
RS-485: Passive Failsafe for an Idle Bus

On the Loading of Power Modules in a Three Phase Voltage Source
On the Loading of Power Modules in a Three Phase Voltage Source

... The power module of Voltage Source Inverter (VSI) in an electric drive consists an IGBT with an anti-parallel free wheel diode (FWD). The module is highly optimized for inverter duty applications with an assumption that drive operates from moderately low to higher speed ranges of the motor and thus ...
LM1577/LM2577 SIMPLE SWITCHER Step-Up
LM1577/LM2577 SIMPLE SWITCHER Step-Up

SECTION `X` CONTENTS
SECTION `X` CONTENTS

Document
Document

... photovoltaic power generation, its status improves greatly. When the grid fails, the routine off-grid operations on large-scale PV power supply cannot meet the requirements of normal operation of power system. The State Grid Corporation of China has made explicit requirements for this problem in 201 ...
Electricity - Olds High School
Electricity - Olds High School

... around the work. This is due to current travelling in the same direction for a prolonged period of time. Arc blow is not a problem when welding with AC because the reversals in the direction of current flow prevent the accumulation of magnetic fields being set up around the work. If it is not possib ...
OPA2320-Q1 Precision, 20-MHz, 0.9-pA, Low
OPA2320-Q1 Precision, 20-MHz, 0.9-pA, Low

MAX8647/MAX8648 Ultra-Efficient Charge Pumps for General Description
MAX8647/MAX8648 Ultra-Efficient Charge Pumps for General Description

... Six White/RGB LEDs in 3mm x 3mm Thin QFN The MAX8647/MAX8648 drive up to six white LEDs or two sets of RGB LEDs with regulated constant current for display backlight and fun light applications. By utilizing an inverting charge pump and extremely lowdropout adaptive current regulators, these ICs achi ...
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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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