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Test 2774 - Edison International
Test 2774 - Edison International

UM10589 SSL2129AT 12 W 230 V flyback mains dimmable LED
UM10589 SSL2129AT 12 W 230 V flyback mains dimmable LED

Aalborg Universitet Real Time Monitoring and Wear Out of Power Modules
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IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... known as voltage/Hz, with neglected the stator impedance, can be maintained constantan rated value. After the stator frequency, known as the base frequency, the volts/Hz ratio, and hence the stator flux linkage, will be lower than its rated value that is due to fixed dc-link voltage magnitude. The o ...
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... circuits [8]. NBTI gradually increases the threshold voltage (Vth ) of pMOS transistors when they are negatively biased, leading to delay degradation and potential timing violations. The degradation rate increases with the time during which a pMOS transistor is stressed. NBTI could cause about 25% p ...
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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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