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MAX16839 Evaluation Kit Evaluates: General Description Features
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... each channel can be reconfigured to provide down to 50mA of current. The EV kit operates from a 5V to 40V rated power supply providing up to 300mA and the EV kit can withstand a 45V load-dump condition. The input supply is filtered by common-mode choke L1 and capacitor C1, while battery-reverse prot ...
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... Electrical Resistance • You and a friend are trying to illuminate a space that has very poor lighting. You both have several feet of wire, two batteries and several light bulb systems to work with. Your friend strings together three light bulbs in a series. You decide set up a one bulb circuit. Who ...
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... clocked in and the programmed function is executed (i.e., a change in DAC register contents and/or a change in the mode of operation). At this stage, the SYNC line may be kept low or be brought high. In either case, it must be brought high for a minimum of 33 ns before the next write sequence so tha ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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