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8.  Electric Power AP1000 Design Control Document
8. Electric Power AP1000 Design Control Document

... The main ac power system is a non-Class 1E system and does not perform any safety-related functions. It has nominal bus voltage ratings of 6.9 kV, 480 V, 277 V, 208 V, and 120 V. Figure 8.3.1-1 shows the main generator, transformers, feeders, buses, and their connections. The ratings of major ac equ ...
LL4148 Small Signal Diode LL4 148
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... cause the failure of the life support device or system, or to affect its accordance with instructions for use provided in the labeling, can be safety or effectiveness. reasonably expected to result in a significant injury of the user. ANTI-COUNTERFEITING POLICY Fairchild Semiconductor Corporation's ...
A Simple Computational Electromagnetic Analysis Example
A Simple Computational Electromagnetic Analysis Example

... switch ON both inhibits # 2 and # 3, which could then be followed by the tiring of the NSI if the appropriate Vgs voltage for each HEXFET was present. Preventing this scenario from happening involves keeping the Vgs of the HEXFET to a low value of no more than 4V. In Figure 2 this is accomplishedby ...
lecture1423723848
lecture1423723848

... Transformers: Single phase transformer, Constructional details, Core, windings, Insulation, principle of operation, emf equation, magnetising current and core losses, no load and on load operation, Phasor diagram, equivalent circuit, losses and efficiency, condition for maximum efficiency, voltage r ...
Lighting and Heating control
Lighting and Heating control

... For control of incandescent lamps to 1840 W halogen lamps to 1840 W, low voltage halogen lamps with ferromagnetic transformer. The interval of the delay setting is 2 seconds to 12 minutes. The time switch must have a blue LED tracking. Standard push buttons can also be used for manual control of the ...
Chapter 5 – Linking Forces to Momentum and Energy
Chapter 5 – Linking Forces to Momentum and Energy

FMR19N60E - Fuji Electric America
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... Introduction  In the design of electronic systems the need frequently arises for signals having prescribed standard waveforms.  There are 2 distinctly different approaches for the generation of sinusoids, most commonly used for the standard waveforms.  Employing a positive-feedback loop that con ...
Low PIM Switch Unit - LPSU
Low PIM Switch Unit - LPSU

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Chapter 9 AC Sweep and Signal Analysis

... .DISTO Statement — AC Small-Signal Distortion Analysis The .DISTO statement causes Star-Hspice to compute the distortion characteristics of the circuit in an AC small-signal, sinusoidal, steady-state analysis.The program computes and reports five distortion measures at the specified load resistor. T ...
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DuraNET 30-2020

LED, LCD characteristics, Tunnel diode, Schottky diode
LED, LCD characteristics, Tunnel diode, Schottky diode

Ambient RF Energy-Harvesting Technologies for
Ambient RF Energy-Harvesting Technologies for

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TS3DV520 数据资料 dataSheet 下载

... NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of t ...
Microwave Engineering - Universiti Sains Malaysia
Microwave Engineering - Universiti Sains Malaysia

... 2. Maximize reactive energy by means of a high RF voltage across the resonator. Use a low LC ratio. 3. Avoid device saturation and try to use anti parallel (back to back) tuning diodes. 4. Choose your active device with the lowest NF (noise figure). 5. Choose a device with low flicker noise, this ca ...
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... generator or possibly another pulse generator, this pulse generator now under consideration must be capable of accepting wide ...
THROTTLE POSITION SENSOR (TPS)—FUNCTION
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... information from these three (3) areas based on vehicle load to generate three (3) independent values. The three (3) independent values will be continuously monitored by the PCM. If one (1) of the values differs significantly from the others during normal vehicle operation, a Continuous Memory Diagn ...
EMI EMC pt 4
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... • The internal inductance of a surface mount technology (SMT) capacitor itself is typically 1–2 nH, the interconnecting PCB traces and vias add 5 to 20 nH or more according to the layout, and the internal lead frame of the IC may have 3 to 15 nH of inductance according to the type of IC package. The ...
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Gary W. Chang - Working Group
Gary W. Chang - Working Group

... bus voltage supplying a harmonic source is distorted, the harmonic source will inject harmonic currents that are different from the non-distorted case. The new current has two characteristics. One is called diversity. It means that the phase angles of the harmonic currents are changed, which may lea ...
Side-channel Issues for Designing Secure Hardware
Side-channel Issues for Designing Secure Hardware

... light, X-rays, laser, camera flash, etc.). They can be semiinvasive or invasive. For the former type of fault insertions the best results were achieved by depackaging the chip (as for invasive attacks), but the passivation layer of the chip i.e. the shield covering the chip remains intact. More prec ...
POTs - ONSemi
POTs - ONSemi

... RL is the low end terminal of the potentiometer. It is not required that this terminal be connected to a potential less than the RH terminal. Voltage applied to the RL terminal cannot exceed the supply voltage, VCC or go below ground, GND. RL and RH are electrically interchangeable. CS: Chip Select ...
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... 1. Active region (or linear region): Base-emitter junction is forward biased. Base-collector junction is reverse biased. 2. Cut off region: Base-emitter junction and base-collector junction are reverse biased. 3. Saturation region: Base-emitter junction and base-collector junction are forward biased ...
if on the Internet, Press  on your browser to
if on the Internet, Press on your browser to

... around a "secondary" coil that would be positioned inside the diameter of the primary. This "secondary" was composed of a flat "pancake" style core of many more turns than the primary. The wire used in the secondary was much thinner than in the primary. He matched the total weight of the primary and ...
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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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