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ICS844021-01 - Integrated Device Technology
ICS844021-01 - Integrated Device Technology

... As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. To achieve optimum jitter performance, power supply isolation is required. The 844021-01 provides separate power supplies to isolate any high switching noise from the outputs to the internal PLL. VDD and VDD ...
Single-Phase Full-Wave Rectifier as an Effective Example to Teach
Single-Phase Full-Wave Rectifier as an Effective Example to Teach

A High Gain Input-Parallel Output
A High Gain Input-Parallel Output

... output during the switch-off period. Unfortunately, the input current is pulsed from the experimental results. In addition, it should be noticed that the low-level input voltages usually cause large input currents and current ripples to flow through ...
Lab #2 Test Bench - Northern Arizona University
Lab #2 Test Bench - Northern Arizona University

Protronic 100 Versatile controller for various requirements
Protronic 100 Versatile controller for various requirements

... The Protronic 100 process controller is the basic model of the Protronic series. It can be operated as a process-specific single unit or in conjunction with higher-level systems. ...
DQ12A
DQ12A

... Discussion Question 12A P212, Week 12 Power in AC Circuits (i) In part (c), you probably used the average-power formula

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Lectures 10-11 Effect of source inductance on phase controlled AC
Lectures 10-11 Effect of source inductance on phase controlled AC

Lecture 6. 555 Timer
Lecture 6. 555 Timer

MAX16910C9 Evaluation Kit Evaluates: MAX16910C General Description Features
MAX16910C9 Evaluation Kit Evaluates: MAX16910C General Description Features

... to 3.3V or 5V using jumper JU3. To configure the EV kit circuit for fixed output mode, install a shunt across pins 2-3 on jumper JU2. Place a shunt across pins 1-2 on JU3 for the 5V preset output. Place a shunt across pins 2-3 for the 3.3V preset output. In adjustable output-voltage mode, the output ...
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... We can write an equation that looks like Ohm's law by defining V*: V* = V0 sin(ωt + π /2) ☞ the relationship between the voltage and current in C looks like: V* = IC / ωC ...
MAX2242EVKIT.pdf
MAX2242EVKIT.pdf

... This section lists the test equipment recommended to verify operation of the MAX2242. It is intended as a guide only, and some substitutions are possible: • One RF signal generator capable of delivering at least +10dBm of output power at the operating frequency with 802.11b comparable source • One R ...
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Study the characteristics of negative feedback amplifiers and design
Study the characteristics of negative feedback amplifiers and design

Electricity Notes, Part I
Electricity Notes, Part I

... one ______________, the atom gets a ____________________ charge and is called an ________. An object can become charged by touching another charged object (charging by _______________), or through friction. Certain materials like rubber and plastics tend to gain electrons, acquiring a ______________ ...
LM111/LM211/LM311 Voltage Comparator
LM111/LM211/LM311 Voltage Comparator

... feedback) around a comparator, to prevent oscillation, and to avoid excessive noise on the output because the comparator is a good amplifier for its own noise. In the circuit of Figure 2, the feedback from the output to the positive input will cause about 3 mV of hysteresis. However, if RS is larger ...
Full Article
Full Article

... converters. However, the voltage-lift circuit definitely has an unavoidable influence on the overall converter performance. It is attempted to clarify such an effect. Four converters with voltage-lift circuit are analysed: positive output self-lift Luo converter, positive output super-lift converter ...
MC34262, MC33262 Power Factor Controllers
MC34262, MC33262 Power Factor Controllers

... legislation on line−current harmonic content, there is an ever increasing demand for an economical method of obtaining a unity power factor. This data sheet describes a monolithic control IC that was specifically designed for power factor control with minimal external components. It offers the desig ...
ECE3155_Ex_4_Nonlinear_Ckts
ECE3155_Ex_4_Nonlinear_Ckts

STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY CANTON, NEW YORK
STATE UNIVERSITY OF NEW YORK COLLEGE OF TECHNOLOGY CANTON, NEW YORK

... H.   CATALOG DESCRIPTION: Basic theory and circuit applications of silicon, germanium, zener, light emitting (LED) and Schottky diodes, bipolar and field effect transistors (FET) is presented. The student is introduced to half wave and full wave DC power supplies and associated ripple filters. Zener ...
Buck Current/Voltage Fed Push-Pull PWM
Buck Current/Voltage Fed Push-Pull PWM

Push-Pull Topology
Push-Pull Topology

Presentation Title Here
Presentation Title Here

... • Internal ESD circuits may sufficiently handle EOS • Be aware of unique EOS situations such as power up and input slewing • External EOS protection circuits will be required if device damage is likely to occur without it ...
I2731
I2731

Electricity and Magnetism Web Quest Name
Electricity and Magnetism Web Quest Name

... transformers is based on the principal of mutual inductance. A transformer usually consists of two coils of wire wound on the same core. The primary coil is the input coil of the transformer and the secondary coil is the output coil. Mutual induction causes voltage to be induced in the secondary co ...
Frequency Dither Circuit for Electronic Ballast EMI Reduction Abstract
Frequency Dither Circuit for Electronic Ballast EMI Reduction Abstract

< 1 ... 1880 1881 1882 1883 1884 1885 1886 1887 1888 ... 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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