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STC03DE220HV
STC03DE220HV

... The STC03DE220HV is manufactured in a hybrid structure, using dedicated high voltage bipolar and low voltage MOSFET technologies, aimed to providing the best performance in ESBT topology. The STC03DE220HV is designed for use in aux flyback SMPS for any three phase application. ...
Direct current / alternating current (DC / AC)
Direct current / alternating current (DC / AC)

... Direct current / alternating current (DC / AC) The types of sources used in a circuit determine everything about the currents and voltages that we see in the circuit. DC → does NOT change with time. DC sources lead to circuit current, voltage, and power that are constant – unchanging with time. Ther ...
ENHANCING FUEL BURNING EFFICIENCY BY REGULATE SPARK
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... optimal fuel efficiency and to get desired dynamic performance at the same time [11]. Other than that, in [12] in order to get the improvement of fuel economy, Gerald J. Rohwein [12] has conducted research entitles an efficient, power enhanced ignition system. Spark ignition engines typically have i ...
LR Phono Preamps - Pete Millett`s DIY Audio pages
LR Phono Preamps - Pete Millett`s DIY Audio pages

... than that of a smaller one, you may think that the larger inductor in my design would be the problem here However, I used the same inductor in both locations. The inductor is tapped – I use the full winding for the 50Hz pole and only a part of it for the 2122Hz pole. But the rest of the coil is stil ...
LT1208/LT1209 - Dual and Quad 45MHz, 400V/µs Op Amps
LT1208/LT1209 - Dual and Quad 45MHz, 400V/µs Op Amps

... taken in board layout in order to obtain maximum performance. Key layout issues include: use of a ground plane, minimization of stray capacitance at the input pins, short lead lengths, RF-quality bypass capacitors located close to the device (typically 0.01µF to 0.1µF), and use of low ESR bypass cap ...
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electromagnetIc detectIon of Iron tracers for monItorIng partIcles

... achieve this goal, an apparatus to detect and measure iron particles dispersed in red mud at a concentration level of 0.5 g/L has been designed, put together in our laboratory and successfully tested in an industrial settler. The working principle of the apparatus makes use of the electromagnetic in ...
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... A STATCOM is connected at the midpoint of the transmission line. The transmission line discussed in the previous section has been again taken in this case. The PSCAD/EMTDC simulation diagram of a STATCOM connected to transmission line at the midpoint line through a coupling transformer and a smoothi ...
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... High-impedance sensors can output signals of interest in either current or voltage form. The MAX9945 interfaces to both current-output sensors such as photodiodes and potentiostat sensors, and high-impedance voltage sources such as pH sensors. For current-output sensors, a transimpedance amplifier i ...
Aalborg Universitet Study of High Voltage AC Underground Cable Systems
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... in the other two, and this can be verified in Fig. 14 where are shown the simulation plots. Notice that while in the first phase to be disconnected (Phase A) there is no overvoltage in the second (Phase C) the voltage goes up to 1.16pu. In the analyzed case the mutual inductances were all equal, but ...
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... All units are shipped to the customer in the tripped position. The status of the display cannot be changed mechanically in handling. After the unit is installed, the energized system will reset the reflective target from the tripped position to the normal position. Installation is quick and easy. No ...
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... power factor. Equivalent circuit of transformer: Let R1 & X1 are resistance and leakage reactance of primary windings and R2 & X2 are resistance and leakage reactance of secondary windings respectively. I1 X1 ...
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TLE6363 – Picking the Right Components

ADR293 数据手册DataSheet 下载
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... voltage of the reference is bootstrapped across RSET, which sets the output current into the load. With this configuration, circuit precision is maintained for load currents in the range from the reference’s supply current, typically 15 μA to approximately 5 mA. VIN ...
MAX8686 Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase General Description
MAX8686 Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase General Description

... The MAX8686 offers the ability to start up monotonically even when there is a prebias output voltage. In addition, an adjustable soft-start capability allows for a controlled turn-on. The MAX8686 features an accurate 1% reference and offers a reference input that allows for a higher accuracy referen ...
Junction Field Effect Transistor (JFET)
Junction Field Effect Transistor (JFET)

... physically two gate diffusions, they are tied together and act as a single gate terminal. The other two contacts, the drain and source, are placed at either end of the channel region. The JFET is a symmetric device (the source and drain may be interchanged), however it is useful in circuit design to ...
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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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