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Non-Linear Op-Amp Applications
Non-Linear Op-Amp Applications

... This is only notable when very high impedance sources are used. In such cases, an alternative op-amp with lower bias current should be used. NB. Bias current is separate to input impedance. It is equivalent to a current source in parallel with the ...
LT3506/LT3506A - Dual Monolithic 1.6A Step
LT3506/LT3506A - Dual Monolithic 1.6A Step

... and L is in μH. With this value the maximum load current will be ~1.6A, independent of input voltage. The inductor’s RMS current rating must be greater than your maximum load current and its saturation current should be about 30% higher. To keep efficiency high, the series resistance (DCR) should be ...
Document
Document

... -Measuring instrument CT is expected to give accurate results up to a maximum of 125% of its normal full-load rated current. -Protective instrument CT is expected to be accurate for up to 20 times of its normal full-load rated current (about 2000% of its full-load rated current!!..??). • Based on th ...
Aalborg Universitet Drive Applications
Aalborg Universitet Drive Applications

MAX1757 Stand-Alone, Switch-Mode Li+ Battery Charger with Internal 14V Switch General Description
MAX1757 Stand-Alone, Switch-Mode Li+ Battery Charger with Internal 14V Switch General Description

... transition smoothly between voltage and current regulation. An additional control loop monitors the total current drawn from the input source (charging + system) and by automatically reducing battery-charging current prevents overload of the input supply, allowing the use of a low-cost wall adapter. ...
ADP1828 数据手册DataSheet 下载
ADP1828 数据手册DataSheet 下载

... other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Absolute maximum ratings apply individually only, not in combination. Unless otherwise specified ...
Highly Efficient, and Compact ZVS Resonant Full Bridge Converter
Highly Efficient, and Compact ZVS Resonant Full Bridge Converter

... the fact that it can use low-voltage stress devices with two series-connected, like a 600V MOSFET, to switch high-DC link input voltage. The TL DC/DC converter uses phase-shift control or resonant control to achieve soft-switching. However, this TL technique has some limitations. Firstly, it needs c ...
PSC30 - Eltek
PSC30 - Eltek

4.5V to 18V Input, 5A/5A Dual Synchronous Step
4.5V to 18V Input, 5A/5A Dual Synchronous Step

... TPS65279V also features a light load pulse skipping mode (PSM) that can be controlled by I2C or MODE pin configuration. The PSM mode allows a power loss reduction on the input power supplied to the system to achieve high efficiency at light loading. The TPS65279V is available in a 32-pin thermally e ...
Thyristor power controller TE10A Burst-firing Single
Thyristor power controller TE10A Burst-firing Single

PHY102Lab2-HK
PHY102Lab2-HK

... After we have finished this experiment, we have found out that the series circuit has a constant current, and the parallel circuit has a constant voltage across each bulb. The light bulbs are actually brighter in the parallel circuit compare with the series circuit. Moreover, we have concluded that ...
Lecture-5: Thyristors - Dr. Imtiaz Hussain
Lecture-5: Thyristors - Dr. Imtiaz Hussain

4.5V to 18V Input, 5A/5A Dual Synchronous
4.5V to 18V Input, 5A/5A Dual Synchronous

Clock driver
Clock driver

... said means for discharging said electrostrictive means Capacitor 30 is the electrostrictive element and is charged comprises a gas discharge tube, a resistance, said gas dis by the current flowing through resistor 31 from a source of voltage B+. Resistor 32 establishes the desired firing 30 charge t ...
Phase Relations in Active Filters
Phase Relations in Active Filters

... Filter design is a two-step process. First, the filter response is chosen; then, a circuit topology is selected to implement it. The filter response refers to the shape of the attenuation curve. Often, this is one of the classical responses such as Butterworth, Bessel, or some form of Chebyshev. Alt ...
Improving Voltage Profile in the Egyptian National Power System
Improving Voltage Profile in the Egyptian National Power System

A distributed voltage stability margin for power
A distributed voltage stability margin for power

MAX17094 Internal-Switch Boost Regulator with Integrated General Description
MAX17094 Internal-Switch Boost Regulator with Integrated General Description

... (TFT) liquid-crystal display (LCD) applications. The step-up DC-DC converter is a current-mode regulator that provides the regulated supply voltage for panel source driver ICs. The current-mode architecture provides fast-transient responses to pulsed loads typical of source driver loads. The high sw ...
Electronics manufacture-ESD control
Electronics manufacture-ESD control

3D ICs: An Opportunity for Fully-Integrated, Dense and - Hal-CEA
3D ICs: An Opportunity for Fully-Integrated, Dense and - Hal-CEA

... converter provides an intermediate power rail Vdd from the primary supply bus Vin e.g. from a chemical battery. An inductive-based switching converter is often used mainly to keep high efficiency over a large conversion ratio and at high current. Designing by power electronics community, the first s ...
MSC8122 and MSC8126 Power Circuit Design Recommendations
MSC8122 and MSC8126 Power Circuit Design Recommendations

AD584 - Analog Devices
AD584 - Analog Devices

... coefficient results in very low errors overtemperature without the use of external components. The AD584 can be operated in a 2-terminal Zener mode at a 5 V output and above. By connecting the input and the output, the AD584 can be used in this Zener configuration as a negative reference. The output ...
lecture1423722706
lecture1423722706

P1 Energy for the Home
P1 Energy for the Home

... forward biased diode changes as the potential difference across it is increased. What happened when the diode was reversed? What does this tell you about a diode? What was the purpose of the fixed resistor? ...
AD8476 数据手册DataSheet 下载
AD8476 数据手册DataSheet 下载

... The AD8476 is a very low power, fully differential precision amplifier with integrated gain resistors for unity gain. It is an ideal choice for driving low power, high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. It provides a precision gain of 1, com ...
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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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