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Motorola Radius CP200
Motorola Radius CP200

... Charging Specifications Ni-based Ni-based batteries are charged with a constant current. The charging starts when the battery is inserted into the holder or at power-on if the battery voltage and temperature is within valid limit. The normal charging termination is based on the rate of temperature r ...
MXT2576 Series SIMPLE SWITCHER 3A Step
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g Accelerometers ADXL78 i
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... if the resonant frequency of the sensor is low, the displacement per unit acceleration is high. The sensor may reach the mechanical limit of travel if the applied acceleration is high enough. This can be remedied by locating the accelerometer where it does not see high values of acceleration, and by ...
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IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
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... Abstract : Energy recovery is a technique originally developed for low power digital circuits. Energy recovery circuits achieve low energy dissipation by restricting current to flow across devices with low voltage drop and by recycling the energy stored on their capacitors by using an AC type supply ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... which informs the LOGICAL INVERTER how to drive the motor coil. Brushless DC motors usually come in fixed voltage types, such as 5V, 6V, 12V, 24V, 48Vetc, with one of the most common ones in use being the 12V type. When the rated voltage is applied to the motor it will rotate with maximum speed, but ...
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FPF2174 IntelliMAX™ Advanced Load Management Products FP F2
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LowXsupplyXopamps
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... maintain a constant current supplied to these two stings of LEDs. The circuitry of the LED drivers is shown below in Fig. 3 and Fig.4. The LM3401 uses a comparator-based voltage mode control to directly control switching. The LED currents are controlled by monitoring peak and valley voltages at the ...
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... coils like those used in MRI imagers, used to take images of the insides of a body without having to go inside. In chemistry labs an NMR spectrometer uses the same kind of signals in a different way to identify compounds. An electric motor converts electrical energy into kinetic energy. Modern elect ...
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... Direct torque control (DTC) induction motor drive is becoming more popular day by day due to its fast dynamic response and robustness to the variation of the machine parameters without using the current controller [1-4]. It is evident that the high torque ripple problems allied with the basic DTC sy ...
TLC393-Q1 数据资料 dataSheet 下载
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... A close approximation of the input offset voltage can be obtained by using a binary search method to vary the differential input voltage while monitoring the output state. When the applied input voltage differential is equal, but opposite in polarity, to the input offset voltage, the output changes ...
and wavelets
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...  The disturbance detection algorithm should be able to detect them as soon as possible, regardless of the nature of the voltage disturbance.  At the same time, the disturbance estimation algorithm should have a good selective accuracy. In all cases, in power quality, is necessary to detect not onl ...
EUP8057 Advanced 1A Linear Charge Management Controllers
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... When power is applied, the EUP8057 starts a charge-cycle if a battery is already present or when a battery is inserted. Charge qualification is based on battery temperature and voltage. The EUP8057 suspends charge if the battery temperature is outside the V(TS1) to V(TS2) range and suspends charge u ...
Direct Light-Triggered Solid-State Switches For Pulsed Power Applications  J. Przybilla
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... connected in parallel to each LTT in order to ensure equal voltage sharing of the total voltage applied to the stack assembly. The thread rods are made of carbon fibers and special care has been taken to avoid sharp edges because at such edges a large electric field strength can arise. In this appli ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... switches are S1(Sa1,Sa2),S2(Sc3,Sc4),S3(Sb1.Sb2),S4(Sa3,Sa4),S5(Sc1,Sc2) and S6(Sb3,Sb4) is analyzed with separation and link method. The separation in Source positive period is shown in figures 3(a) and the separation in Source negative period in figures 3(b) and which are then linked, found equal ...
PHY 142L Spr 2016 Lab 2
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... capacitors, inductors, diodes, transistors, and of course the wires that connect them. In this lab, we will examine some of the roles that resistors and capacitors can play, as these are the elements we can readily understand at this point in the course. (The theory of inductors requires an understa ...
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Power electronics



Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.The first high power electronic devices were mercury-arc valves. In modern systems the conversion is performed with semiconductor switching devices such as diodes, thyristors and transistors, pioneered by R. D. Middlebrook and others beginning in the 1950s. In contrast to electronic systems concerned with transmission and processing of signals and data, in power electronics substantial amounts of electrical energy are processed. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs start from a few hundred watts and end at tens of megawatts.The power conversion systems can be classified according to the type of the input and output power AC to DC (rectifier) DC to AC (inverter) DC to DC (DC-to-DC converter) AC to AC (AC-to-AC converter)
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