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lec25
lec25

BD677
BD677

... time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the S ...
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... Figure 10. Inductive load switching time Figure 11. Resistive load switching time ...
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LAB#7 - SIUE
LAB#7 - SIUE

Input Leakage Current in High Speed Applications
Input Leakage Current in High Speed Applications

... input leakage specifications of 200 nA (AD7738) and 5 nA (AD7739). Without these buffers, the user would be exposed to the load presented by an unbuffered -. However, even with these buffers, there are other input currents caused by channel changing and system chopping. A block diagram to illustra ...
Synchronous Buck Converter with Programmable Output
Synchronous Buck Converter with Programmable Output

... The SC190 has four device variants (SC190A, SC190B, SC190C, SC190D) each with a distinct range of output voltages. The output voltage of each variant has four predetermined values which can be individually selected by the correct programming of the VID0 and VID1 pins. (See “Programmable Output Volta ...
Series and Parallel Circuits
Series and Parallel Circuits

... will go DOWN (lights will dim) If you remove a light bulb or one burns out—all go out! ...
SP6644/6645 Evaluation Board Manual
SP6644/6645 Evaluation Board Manual

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Short Form Catalog Electrical Measuring Instruments

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Your first driver - Laser Pointer Forums

... The driver of the laser diode (LD) is a small scheme, which sets the power mode laser. it follows that the current through the LD does not exceed the level exhibited. The fact that the LD semiconductor component, and so terribly non-linear ... ie the LD current increases not directly proportional to ...
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Current-Mode Control Stability Analysis For DC

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university of california at berkeley - Berkeley Robotics and Intelligent

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< 1 ... 1960 1961 1962 1963 1964 1965 1966 1967 1968 ... 2646 >

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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