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XR33052/53/55/58
XR33052/53/55/58

... The XR33052, XR33053, XR33055, and XR33058 (XR3305x) are a family of high performance RS-485/RS-422 devices designed for improved performance in noisy industrial environments and increased tolerance to system faults. The analog bus pins can withstand direct shorts up to ±60V and are protected agains ...
effects of concrete on touch and step voltages in substations
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... comparison with slab having no reinforcement (Pad 1). As concrete dries, ungrounded rebars become less effective with characteristics similar to Pad 1. Voltage equalizing characteristics of wire meshes remain the same.  Voltages reduce significantly when rebars or wire meshes are connected to grid. ...
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... resistance to the flow of charge in the bulb? 28. In many homes, 75-watt incandescent light bulbs are common. In one home there are 10 lights, and each light is on 90 hours per month. If the power company charges 15 cents per kilowatt-hour of energy, how much money will be saved each month if all th ...
AD5320 数据手册DataSheet 下载
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... The reference for AD5320 is derived from the power supply inputs and thus gives the widest dynamic output range. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to zero volts and remains there until a valid write takes place to the device. The part contains ...
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... driver can operate to at least 5Mbps. ...
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... The HMC981LP3E has an integrated negative voltage generator to synthesize negative voltages required to drive depletion mode amplifiers. If an external negative supply is already available or an enhancement mode device is targeted, the negative voltage generator can be disabled. The HMC981LP3E achie ...
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... 45nm technology nodes) and/or by utilizing low power design techniques (e.g., using clock gating and static voltage scaling techniques). However many opportunities for reducing energy dissipation at the system level exist. For example, modern circuit design technologies allow a number of different c ...
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... In recent years, the use of organic electronics to regulate functions of biological systems has received increasing attention13 . Transistors4, 5, electrodes6-8, and diodes9 have successfully been explored to selectively sense and regulate a vast array of processes of eukaryotic cell systems. Organi ...
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... If these pins are powered out of sequence, and there are no current limiting resistors, then it is possible to forward bias a PN junction on the chip (which should always be reverse biased). If this occurs, damage to the chip can occur. ...
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... To ensure a safe installation, the Class 1000 meter requires an external switch mechanism, such as a circuit breaker, be installed on the Class 1000 MAINS input wiring. The switch mechanism must be installed in close proximity to the meter and easily reachable for the operator. This device must also ...
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... Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Inf ...
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ADM6819 数据手册DataSheet 下载

... below the undervoltage threshold, ensuring that the FET is held off. When VCC1 or VCC2 is above UVLO and the primary supply is above the desired level dictated by the resistor divider to the VSET pin, the external FET is driven on after the delay has expired. An internal charge pump enhances the ext ...
MAX2121EVKIT.pdf
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... The EV kit can serve as a guide for PCB layout. Keep RF signal lines as short as possible to minimize losses and radiation. Use controlled impedance on all high-frequency traces. The exposed pad must be soldered evenly to the board’s ground plane for proper operation. Use abundant vias beneath the e ...
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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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