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Lab 16 - ece.unm.edu
Lab 16 - ece.unm.edu

... The common source and common drain JFET amplifiers are shown in Figure 16-1 and 16-2 respectively. The JFET CS and CD amplifiers are comparable in operation to the MOSFET CS and CD configurations. The amplifier characteristics of the JFET CS and CD circuits can also be compared to the BJT CE and CC ...
Microsoft Word - PHY 204 Exp. 1 Electric Field Mapping
Microsoft Word - PHY 204 Exp. 1 Electric Field Mapping

... During the original B -field build-up the charges were pushed (by P.S.) against an extra ...
Using Electricity - Summary Notes.CWK (DR)
Using Electricity - Summary Notes.CWK (DR)

... Section 1 - From the Wall Socket Electrical Energy and Power Ratings Batteries and the mains are sources of electrical energy. Electrical appliances can then convert this into other forms of energy. ...
- aes journals
- aes journals

... harmonics in the input current and output voltage; low input power factor especially at low output voltage since these conventional rectifiers draw nonsinusoidal currents from the grid. Since power devices demand reactive power in addition to active power, a charger with low power factor increases b ...
New Approaches to CATV System Powering
New Approaches to CATV System Powering

... 16 amps at 60 volts (960 VA). The 60 volt AC power is rectified, filtered, and regulated to provide the one or more DC voltage(s) required to operate the active components within the amplifier. Recent amplifier power supply designs utilize high frequency switchmode technology to provide high convers ...
FAN6862 Highly Integrated Green-Mode PWM Controller
FAN6862 Highly Integrated Green-Mode PWM Controller

... is detected, switching is terminated and the MOSFET remains off. This causes VDD to fall because no more power is delivered from auxiliary winding. When VDD falls to VDD-OFF (8.5V), the protection is reset and the operating current reduces to startup current, which causes VDD to rise. FAN6862 resume ...
Frequency Dither Circuit for Electronic Ballast EMI Reduction Abstract
Frequency Dither Circuit for Electronic Ballast EMI Reduction Abstract

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Stepper Motor Driver MC3479

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RF Safety Discussion

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HJ2212831287

Isolated 4 to 20 mA Transmitters For Demanding Applications
Isolated 4 to 20 mA Transmitters For Demanding Applications

... applied across the input or output leads for 1 minute for all models with voltage or thermocouple inputs. Reverse polarity of 400 Vp may be applied across the output leads indefinitely. These exceptionally high NMV overvoltage ratings provide further protection against possible electrical faults and ...
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2159

... Surge Protection Made Simple™ for Coaxial Data Cables UL Listed 497B In-line Surge Protective Device for BNC Connector Cable Systems Description ...
G1SLE Mk2 Repeater control connections Interconnection with the
G1SLE Mk2 Repeater control connections Interconnection with the

... 2. Discriminator audio. This input should be connected to the repeater receiver un-muted unprocessed discriminator audio output. Input is buffered and appears as approximately 220k impedance. A level of 100 to 500mV p-p at 300hz deviation is desirable, should it be necessary the buffer amplifier fee ...
AD633 Low Cost Analog Multiplier
AD633 Low Cost Analog Multiplier

... scale factor error, and nonlinearity in the multiplying core. The input and output offsets can be eliminated by using the optional trim of Figure 2. This scheme reduces the net error to scale factor errors (gain error) and an irreducible nonlinearity component in the multiplying core. The X and Y no ...
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MM74HCT138

... 2. A critical component in any component of a life support 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) suppor ...
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Full-text

... Focus here is on an efficiency enhancement method for the quasi-impedance-source based (qZS-based) DC/DC converter. According to earlier papers [1-6], the qZS converter has many advantages over other DC/DC converters, such as voltage step-up property in a single stage, continuous input current, exce ...
Circuits Test #2 - Review
Circuits Test #2 - Review

... 23. If a light in your house (120V) draws 0.5 amps, how much resistance is in the bulb? R = V/I = (120V)/(0.5A) = 240Ω 24. If a light bulb uses 6V and has a resistance of 12Ω, what is the current it draws? I = V/R = (6V)(12Ω) = 0.5A Fill-in-the-Blanks: 25. Ohm’s Law states “For a given resistor at a ...
BDTIC Power-Factor Controller (PFC) TDA 4862 IC for High Power Factor
BDTIC Power-Factor Controller (PFC) TDA 4862 IC for High Power Factor

... A one quadrant multiplier is the crucial circuitry that regulates the gate driver with respect of the DC output voltage and the AC haversine input voltage of the preregulator. Both inputs are designed for good linearity over a wide dynamic range, 0 V to 4.0 V for the MULTIN and 2.5 V to 4.0 V for th ...
AD633 - Department of Electrical Engineering at the University of
AD633 - Department of Electrical Engineering at the University of

WS1050 Tunable RF Capacitor
WS1050 Tunable RF Capacitor

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Datasheet - New Jersey Semiconductor

LectNotes1-CircuitBasics
LectNotes1-CircuitBasics

... (I can't guarantee that the value gm = 250 is correct.) The first thing to note in this circuit is that the value of the resistor in the transistor model does not affect the analysis, since vbe will be equal to the source voltage 5 mV (unless there is a short circuit). Next, note that the current pr ...
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Chapter 4 - Series Circuits

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ADR510 数据手册DataSheet 下载
ADR510 数据手册DataSheet 下载

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Programmable Gain Amplifier
Programmable Gain Amplifier

< 1 ... 1881 1882 1883 1884 1885 1886 1887 1888 1889 ... 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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