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Voltage Reference Scaling Techniques: Increase the Accuracy of
Voltage Reference Scaling Techniques: Increase the Accuracy of

... Thermocouples are low impedance, voltage output devices requiring a temperature reference or compensation point. No voltage or current excitation is required, which is a plus; however, their sensitivity is very low. For example, the K-Type thermocouple has an approximate 40-μV/°C sensitivity to chan ...
IQ: What it is, what it isn`t, and how to use it
IQ: What it is, what it isn`t, and how to use it

... any IC, the specified IQ is not guaranteed when the input voltage is above the recommended maximum (but less than the absolute maximum) or when the input voltage is below the recommended minimum (but above the UVLO level). For a buck converter, IQ is valid only when the input voltage is greater than ...
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IECON05_Boost_Integr..
IECON05_Boost_Integr..

... The porpoise of this paper is to report the development of low cost single stage HPF electronic ballast for HPS lamps. The design criteria will be presented in this work for the proposed circuit. There are many kind of high-pressure lamps; however, this work will focus only the high-pressure sodium ...
PFC FrontEndTM Power Factor Corrected AC-DC FrontEnd
PFC FrontEndTM Power Factor Corrected AC-DC FrontEnd

... modular connectivity. They also house four separate control lines that provide disable and enable for Vicor DC-DC converters connected to the PFC FrontEnd. Upon start-up, all 4 of these lines are held low to disable the external converters until the PFC FrontEnd comes up properly. After that, contro ...
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Drive Solutions for the Global Cement Industry
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... A logic low on EN forces the TPS6205x devices into shutdown. In shutdown, the power switch, drivers, voltage reference, oscillator, and all other functions are turned off. The supply current is reduced to less than 2 µA in the shutdown mode. When the device is in thermal shutdown, the bandgap is for ...
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... panel depends upon the continuous varying environmental conditions such as temperature and solar radiations. The major problem with the existing solar energy MPPT harvesting technologies is that, the efficiency of solar power system is still very low and the PV system does not operate on its best ef ...
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... Output Capacitor In order to insure stability while the device current limit is active, a small capacitance of approximately 1µF should be used on each output. When either output of the AAT4626 is activated using the EN(A/B) function, there are no momentary current transients, as in the case when a ...
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... and zero-sequence networks of the power system under study, based on which one further needs to work out the impedance of three thevenin equivalent circuits as viewed from faulty point. Then the positive-, negative- and zerosequence components of phase-a faulty-point-toground current can be calculat ...
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... adjustable through the selection of an external resistor connected to ISET. Information for selecting the resistor is found in the Application Info section. The FPF2165R has no current limit blanking period so it will remain in a constant current state until the ON pin is deactivated or the thermal ...
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... factor of only 12.5 percent, enabling power savings by putting much of the baseband circuitry into standby mode in between transmit cycles. In baseband circuits, the load often transitions virtually instantaneously from 100µA to 100mA. To meet this load requirement, the LDO must react very quickly w ...
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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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