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20. Electric Charge, Force, & Field
20. Electric Charge, Force, & Field

... If one of them burns out, they all go out. Are they connected in series or in parallel? ...
RA06H8285M 数据资料DataSheet下载
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... 1. The specifications of mention are not guarantee values in this data sheet. Please confirm additional details regarding operation of these products from the formal specification sheet. For copies of the formal specification sheets, please contact one of our sales offices. 2.RA series products (RF ...
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TPA2000D1-Q1 数据资料 dataSheet 下载

... time at that voltage. The differential voltage swing is 2 × VDD, and the time at each voltage is half the period for the traditional modulation scheme. An ideal LC filter is needed to store the ripple current from each half cycle for the next half cycle, while any resistance causes power dissipation ...
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... When you are using mathematical formulas to decipher components of ohms law Amperage is symbolized by the Capital letter (I). Now you are wondering why use the letter (I) seeing as Current starts with a (C). The reason is back in the 1700’s most of the scientists that were working on experiments de ...
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< 1 ... 1968 1969 1970 1971 1972 1973 1974 1975 1976 ... 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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