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Radio-frequency power generation
Radio-frequency power generation

... output power from a single device is determined by the working voltage, the frequency and the technology employed. Other factors which are important in the specification of power amplifiers include reliability and, in some cases, bandwidth. The capital and running cost of an accelerator is strongly ...
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High Frequency, High Precision CMOS Half-Wave Rectifier Montree Kumngern and Kobchai Dejhan

... capability. Recently, a dual output CMOS half-wave rectifier circuit has been proposed in [10]. This circuit composed of two sections. The first is rectifier circuit uses the V-I converter to change the input voltage into currents, the diodes to rectify the currents, and the I-V converters to change ...
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... The main board will run over the range 6 to 15 Volts d.c. However, if the Relay extension board is being used the range is reduced to 10 to 15 Volts as the relays themselves have a nominal rating of 12 Volts. Current consumption is around 40mA excluding the power consumed by the satellite boards. Fo ...
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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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