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TD class note 3
TD class note 3

... phase in construction, in contrast to the low voltage polyphase units used for industrial application. About 1960 control electrodes were added to silicon diodes, giving siliconcontrolled-rectifiers (SCRs or Thyristors). In 1961 the cross channel link between England and France was put into operatio ...
45 MHz Test Model - Brounley RF, Inc.
45 MHz Test Model - Brounley RF, Inc.

... magnitude of the VSWR. It is used for RF generators that excite plasma chambers or ICP torches. Referring to Figure 18, the output power of the RF generator is controlled by the B+ output of a switching regulator. A 0-10 volt control voltage is connected to the + input of operational amplifier A. Th ...
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english - KEK Concept GmbH

... Willich-Münchheide, August 25, 2016 LAPIS Semiconductor, a member of the ROHM group, has announced the development of the ML620130 family of 16bit low power MCUs, optimized for compact industrial equipment requiring battery drive in noisy environments, featuring superior processing capability with l ...
CH26 LAB Capacitors
CH26 LAB Capacitors

... plates which are thin sheets of metal separated by a dielectric, insulating material. For this reason, the schematic symbol of a capacitor is has two vertical lines a small distance apart (representing the capacitor plates) connected to two lines representing the connecting wires (or leads). ...
OhmsLaw - OCExternal
OhmsLaw - OCExternal

Lecture note from 21-26 Lecture 21 Problem Solving 1) A single
Lecture note from 21-26 Lecture 21 Problem Solving 1) A single

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OPA349, OPA2349 - Texas Instruments
OPA349, OPA2349 - Texas Instruments

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A 78 pW 1 b/s 2.4 GHz Radio Transmitter for Near-Zero

... is electrically small at 2.4 GHz, and can therefore act as a highQ inductive element in the resonant LC tank of the oscillator itself [11]. Such a topology performs automatic impedance matching with the antenna, and as a result, eliminates the need for an additional output buffer or power amplifier, ...
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HMC860LP3E - Hittite Microwave Corporation

... performance is not critical for a particular output, the 100nF capacitor can be omitted for the respective regulator. In this case, noise spectral density will typically increase by a factor of 20X at 10kHz. The 1µF REF capacitor causes a 25ms typical turn-on start-up time. ...
1.Capacitance - Brock physics
1.Capacitance - Brock physics

... Your graph should display these points placed on one of several horizontal equally spaced lines that represent the the discrete voltage steps Vs of the converter output. From the graph and the corresponding data table values, select two adjacent voltage steps V1 and V2 , then determine the voltage r ...
ACDSee HP Version print job
ACDSee HP Version print job

... Due to the fact that the electrical utilities produce, in general, the electrical power as sinusoidal and positive sequence phase voltages, this has been established as reference condition in the supply. A resistive load, balanced and linear is considered as the ideal reference load. A reference vol ...
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see note 1
see note 1

... The HX3002 incorporates two trigger electrodes and there are two alternative methods recommended for triggering. Figs. 1a and 1b show the simplest method, where the applied pulse is shared between grid 1 and grid 2 with suitable series grid resistors. Fig. 1c shows an alternative method whereby a DC ...
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Exercise 4

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RF MEMS Charge Pump

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< 1 ... 1924 1925 1926 1927 1928 1929 1930 1931 1932 ... 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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