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1. The current in the secondary coil of a step
1. The current in the secondary coil of a step

... * 9. Which one of the following statements concerning diodes is false? * A. A diode connected to an ac source allows current to flow only in one direction. * B. A diode is fabricated by forming junctions between on n-type and two p-type semiconductors or on p-type and two n-type semiconductors. * C. ...
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AMERITRON AL-811H
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... associated with power supply electrical operation, 3) verify that the data acquisition system functions properly in the presence of the power circuit induced magnetic fields, and 4) verify that data system control of the power supplies functions properly. The procedure will initially test one PS at ...
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... Know Your Power Power Supply Notes All low-current Ground-Fault Sensors are sensitive devices that require reasonable care in system design to avoid false trips caused by high electrical noise levels. Keep in mind that the best way to reduce noise in a system is to suppress it at its source. 1. Keep ...
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504e - İnfotek

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OP4005B - Murata

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MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 _______________General Description
MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 _______________General Description

... 150mA. The output voltage is preset to voltages in the range of 2.5V to 5.0V, in 100mV increments. The MAX8867 and MAX8868 are pin-compatible with the MAX8863 and MAX8864, except for the BP pin. Designed with an internal P-channel MOSFET pass transistor, the MAX8867/MAX8868 maintain a low 100µA supp ...
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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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