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Lecture Notes - Signals and Spectra File
Lecture Notes - Signals and Spectra File

Lecture 31 Slides - Digilent Learn site
Lecture 31 Slides - Digilent Learn site

... • Which can be decomposed into two plots: ...
Adaptive Voltage Regulation and Equal Current Distribution of
Adaptive Voltage Regulation and Equal Current Distribution of

... In order to accomplish the equal current distribution and the regulated output voltage, many different switching control design approaches have been proposed for parallel operations of the converters [3-9]. All these approaches have tried to reach this goal with a minimum of technical complexity in ...
ECEN5817L38
ECEN5817L38

... current-bidirectional switch See Vinciarelli patent (1982) for use in forward converter Related to other half-bridge ZVS circuits Can be added to the transistor in any PWM converter Not only adds ZVS to forward converter, but also resets transformer better, leading to better transistor utilization t ...
Lecture 31 slides - Digilent Learn site
Lecture 31 slides - Digilent Learn site

Rad Hard 190K Used Gates 0.5 um CMOS Sea of Gates
Rad Hard 190K Used Gates 0.5 um CMOS Sea of Gates

Noise Sniffer
Noise Sniffer

... • Will detect any changes made to a circuit from household appliances or heavy equipment that may be reflecting noise back into the power line. ...
batteries, interference and grounding
batteries, interference and grounding

PQube 3 Specifications
PQube 3 Specifications

2. Art of Op-Amp design
2. Art of Op-Amp design

... blocks of simple two-stage Op–amp is shown below. Each box in the figure can be replaced with an actual circuit implemented in modern VLSI technology. The topologies which a designer chooses are very much dependent upon the type of application he or she is looking for. However it may also depend on ...
L25.ppt
L25.ppt

... • Conductors have “free electrons” that roam around randomly  no current • To push these free electrons through a conductor, i,e., to make a current, some external force must be applied to the conductor • This external force must be continually applied because the electrons experience a resistance ...
L25.ppt - University of Iowa Physics
L25.ppt - University of Iowa Physics

... • Conductors have “free electrons” that roam around randomly  no current • To push these free electrons through a conductor, i,e., to make a current, some external force must be applied to the conductor • This external force must be continually applied because the electrons experience a resistance ...
In contrast to thermocouples, Pt100 resistances (platinum RTDs with a
In contrast to thermocouples, Pt100 resistances (platinum RTDs with a

... In the present design, accurate temperature injection of 1 mA was accomplished using a LT1460-2.5 voltage reference source (Linear Technology) that gave a 2.5 V voltage output from the FAC-6628 ±15 V-1 A dual power supply (Promax) with 0.075 nominal accuracy. This output voltage was coupled to the P ...
Electric current - University of Iowa Physics
Electric current - University of Iowa Physics

... Power  P = I V or I2  R   Power is measured in Watts = amps  volts One Watt is one Joule per second Wires are rated for the maximum current that  can be handled based on how hot it can get • To carry more current you need wire of a larger  diameter  this is called the wire gauge, the  lower the ...
dmm - ground bond high voltage - insulation resistance
dmm - ground bond high voltage - insulation resistance

... desirable to make a distinction between real and total current. Total current is the vector sum of resistive and capacitive leakage current (see picture on the right). If the tester monitors only the total current, a substantial change in real current can often go undetected. The ability to separate ...
Basic Electricity
Basic Electricity

... them are called "conductors". • Although some are better than others, most metals are good conductors of electricity. Silver, Gold, and Platinum are very good conductors but are expensive, so they are not often used. • Copper and Aluminum are reasonably good conductors and are fairly inexpensive. • ...
AC circuit
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... example, your voice is transmitted over telephone wires by time-varying voltages, which cause a membrane in the speaker at the other end of the line to vibrate, thus recreating your voice. In audio equipment, the information about sound is encoded as numbers on a compact disk, but can only be played ...
Sample Curriculum
Sample Curriculum

... Now  ensure  all  switches  are  closed  and  the  applied  power  is  still  6VDC.    In  order  to   make  a  current  measurement  with  an  ammeter,  you  must  break  the  circuit  and   install  the  meter  so  all  the  c ...
213Lab11-transformer
213Lab11-transformer

... A transformer is a device that changes the AC voltage and current. It works based on the electromagnetic induction principles, and consists of 2 coils: the primary coil and the secondary coil. Primary coil is connected to an AC power supply. The coil has a ferromagnetic core that enhances the magnet ...
Learning Basic DC Circuit Techniques
Learning Basic DC Circuit Techniques

... Resistivity (ρ)– Resistivity is the intrinsic property that accounts for the nature of a material. It is defined as the ability of a material to resist electrical conduction, with units ohm-meter (Ωm). The resistance of a material is related to its resistivity such that: R = ρ (L/A) where, ...
PHY252 Fall 2015 Practical Lab #1:  Ohm’s Law Objectives Apparatus
PHY252 Fall 2015 Practical Lab #1: Ohm’s Law Objectives Apparatus

... multimeters) reads 3.0 V. Record the current on the ammeter (the other multimeter) ...
XA SERIES - Nady Systems, Inc.
XA SERIES - Nady Systems, Inc.

... is necessary for compatibility with this input. Balanced input signals are recommended as they are less prone to AC hum. For long cable runs a source of less than 600 ohms output impedance is needed to avoid signal loss. For short cable runs an unbalanced signal input should be suitable. For stereo ...
How to Convert a Computer ATX Power Supply to a
How to Convert a Computer ATX Power Supply to a

... supply by hooking the orange wires to a post (making sure the brown wire remains connected to an orange wire) but beware that they share the same power output as the 5 volt, and thus you must not exceed the total power output of these two outputs. To get more room you can mount the fan on the outsid ...
chapter1
chapter1

SGA-4300 数据资料DataSheet下载
SGA-4300 数据资料DataSheet下载

... The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or ot ...
< 1 ... 1889 1890 1891 1892 1893 1894 1895 1896 1897 ... 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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