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AP5101  1.5A Step-Down Converter with 1.4MHz Switching Frequency
AP5101 1.5A Step-Down Converter with 1.4MHz Switching Frequency

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Exclusive Technology Feature Synchronous Zeta Converter

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... 4. Adjust R47, R48, R66 & R67 values in case you cannot get to +/-20V regulated voltage. Reduce the resistance value by solder another 330k resistor in parallel with them in case the voltage is higher than 20V. 5. In fact, it is recommended to adjust the regulators from +/-20V to +/-18V dc so that t ...
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Three Phase Three Level DC/DC Converter Using Active

... switching frequency and at the full power of the main dc/dc converter. This Active Clamp Technology will reduce the duty cycle losses. It reduces the number of switches, the gate drivers, and PWM channels significantly, which greatly simplifies the circuit structure. All power switches sustain only ...
Aalborg Universitet connected via VSC-HVDC networks
Aalborg Universitet connected via VSC-HVDC networks

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... The MAX8569A and MAX8569B compact high-efficiency step-up converters feature low-quiescent supply current to ensure the highest possible efficiency over a wide load range. With a minimum 1.5V input voltage, these devices are well suited for applications with two alkaline cells, two nickel-metal-hydr ...
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Chapter 14

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Paper Title (use style: paper title)

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... We propose a Class D amplifier output stage as shown in Fig. 1. A full bridge arrangement is used with a phase shift between drive signals PWM1 and PWM2. We take the two output filter inductors found in a typical Class D amplifier configuration and combine them into a single component where the two ...
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... voltage operation and faster response to input line fluctuations for the PFC boost preregulator. For most designs, a voltage level of 1.5V on this pin should correspond to low line, and 4.7V for high line. The input range for this pin extends from 0 to 5.5V. ...
Control Strategies of Grid Connected PWM Voltage Source Inverter
Control Strategies of Grid Connected PWM Voltage Source Inverter

... control capabilities, improves power quality and their effect on power system stability. With recent advances of semiconductor switching devices, operating frequency and lower capacity of switch mode power converters are much improved. In these converters pulse width modulation (PWM) technique is wi ...
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... The operation of the flip-flop shown in Fig. 3 is as follows: suppose that the two independent inputs S , R are set to high, if Q is set to low state, then the output of down gate will set to the high state. In this case, the output of up NAND gate should wait a period of time until the output of do ...
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... mass and elimination of areas of current constriction will increase surge capability. Of the four types of resistors, the two that are most often used in surge applications are thick film and wirewound. When specifying any resistor for a specific application, it is important to consider not only the ...
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... with a focus on the demonstration of ACS™/Triac control with the STM8S-DISCOVERY kit. The demonstration board is aimed at applications where ACS and Triacs are used. It may particularly help appliance designs where only 2 AC switches are required, for example, coffee machines, bread makers, low-end ...
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Aalborg Universitet A generic inertia emulation controller for multi-terminal VSC-HVDC systems
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... transmission system provides constant frequency and voltage amplitude for the wind farm network. As long as the frequency and AC voltage amplitude are maintained constant, the power generated by the wind farm is automatically absorbed by the WVSC and transferred to the DC link [11]. The WVSC should ...
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... Unlike traditional current transducers, there is no danger from open-circuited secondaries. They cannot be damaged by large overloads. They are non-intrusive. They draw no power from the main circuit carrying the current to be measured. They are also light weighted and in some applications are light ...
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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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