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Presentations \Bremond
Presentations \Bremond

... with ITER environment would certainly required much effort, design work, mock-up validation, let alone manufacturing difficulties for making the real thing. 2. Vacuum window (primary safety barrier) is in an unmatched section - it has to withstand higher RF current / voltage (typically 35 kV / 1.6 k ...
LTC3704 - Wide Input Range, No RSENSE Positive-to
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... supply voltage at which the IC turns on and off (comparator C2 has 100mV of hysteresis for noise immunity). With the RUN pin below 1.248V, the chip is off and the input supply current is typically only 10μA. The LTC3704 can be used either by sensing the voltage drop across the power MOSFET or by con ...
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... Supply voltages below the specified levels can cause the REF31xx to momentarily draw currents greater than the typical quiescent current. This can be prevented by using a power supply with a fast rising edge and low output impedance. ...
5. Executive Summary The Automated Antenna Controller (AAC) is
5. Executive Summary The Automated Antenna Controller (AAC) is

... equipment from burns of both temperature and RF nature and electric shock. To comply with these constraints, these design options were selected. The PIC18F2520 microcontroller was chosen for its features and capabilities over other microcontroller offered by our customer, MFJ, Inc. The ADC is used t ...
BD9122GUL
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... High-Side Gate Driver Output. Connect DH to the gate of the external high-side N-channel MOSFET switch. DH is powered from the capacitor between SW and BST and its voltage swings between VSW and VBST. Power Switch Node. SW is the power switching node. Connect the source of the high-side N-channel MO ...
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Study of PTCR Behavior for Wide Voltage and Ambient Temperature

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A Broadband HF Amplifier Using Low-Cost Power MOSFETs

... During receive, TR relay K1 is deenergized. Signals from the antenna are connected to J2 and routed through K1 to a transceiver connected to J1. (This path loss is less than 0.3 dB from 1.8 MHz through 30 MHz.) In transmit, RF voltage from the transceiver is sampled by C17 and divided by R6 and R7. ...
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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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