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... Switchyard means collection of electrical equipment where high voltage electricity is switched using of various component. Electrical switchyards are usually part of a substation where electricity is transformed from one voltage to another for the transmission, distribution. Or we can say that a swi ...
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LME49830 数据资料 dataSheet 下载

... ered optional. The RDS(on) of the devices serve a similar purpose. As the output stage is scaled up in number of devices the value of RE will need to be optimized for best performance. Typical values range from 0.1Ω to 0.5Ω. The value of the gate resistors affect stability and slew rate. The capaci ...
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... Modelica is a unified language specification for systems characterized by differential-algebraic equations taking into account discrete events for definition of discontinuous behaviour or sampled-signal systems. Olaf Enge-Rosenblatt, EOOLT, Berlin, July 30, 2007 ...
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... header and shunt. Installing a shunt in J3 in the Master position connects the M/S (master/slave) pin to VIN and programs the Master synchronization mode. The TPS40170 controller outputs a 50% duty cycle 3.3V SYNC signal to the SYNC I/O connector (J4). The rising edge of the SYNC signal is synchroni ...
Harmonics upstream of rectifiers in UPS
Harmonics upstream of rectifiers in UPS

350-mA, 6-MHz HIGH-EFFICIENCY STEP
350-mA, 6-MHz HIGH-EFFICIENCY STEP

... In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated. Maximum ambient temperature (TA(max)) is dependent on the maximum operating junction temperature (TJ(max)), the maximum power dissipation of the dev ...
ADM209 数据手册DataSheet 下载
ADM209 数据手册DataSheet 下载

... The EIA-232-E standard requires transmitters that will deliver ±5 V minimum on the transmission channel and receivers that can accept signal levels down to ±3 V. The ADM206–ADM211/ ADM213 meet these requirements by integrating step-up voltage converters and level shifting transmitters and receivers ...
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Stability Analysis of a Microgrid System with a Constant Power Load

... present paper studies stability properties in case such a microgrid operates in island mode. First, a simple model describing the behavior of the microgrid is studied. When considering a linear load or a Constant Power Load CPL, the static and the dynamic resistances are determined. Such a CPL consu ...
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... liquefied natural gas plants, water plants, marine propulsion, power generation, energy transmission, and powerquality devices, FACTS Devices [1-3]. Cascaded H-bridge converter topology is prominently used and particularly useful for renewable energy and DSTATCOM applications [4-5], [9]. While in co ...
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... transistors and the interconnects smaller, more circuits can be fabricated on each silicon wafer and therefore each circuit becomes cheaper. Miniaturization has also been instrumental in the improvements in speed and power consumption. Each time the minimum line width is reduced, we say that a new t ...
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... 260 can fully protect a multipurpose Instrument under all overload conditions. Overloads of such severity as to damage the Instrument despite all the built-in protection provided are possible when the Instrument is misused. The 260-8 has been designed to afford maximum instrument protection under ov ...
MAX1774 Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover General Description
MAX1774 Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover General Description

... Converter with Backup Battery Switchover (Figure 1, VIN = VINS = +12V, VINC = VCS- = VCS+ = +3.3V, VCORE = +1.8V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°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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