Pulse Service Documentation
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Switched-Mode Power Supply - Wikipedia, the Free Encyclopedia
Switched-mode power supply - Wikipedia, the free encyclopedia Log in / create account Article Discussion Read Edit Switched-mode power supply From Wikipedia, the free encyclopedia For other uses, see Switch (disambiguation). Navigation A switched-mode power supply (switching-mode Main page power supply, SMPS, or simply switcher) is an Contents electronic power supply that incorporates a switching Featured content regulator in order to be highly efficient in the Current events conversion of electrical power. Like other types of Random article power supplies, an SMPS transfers power from a Donate to Wikipedia source like the electrical power grid to a load (e.g., a personal computer) while converting voltage and Interaction current characteristics. An SMPS is usually employed to efficiently provide a regulated output voltage, Help typically at a level different from the input voltage. About Wikipedia Unlike a linear power supply, the pass transistor of a Community portal switching mode supply switches very quickly (typically Recent changes between 50 kHz and 1 MHz) between full-on and full- Interior view of an ATX SMPS: below Contact Wikipedia off states, which minimizes wasted energy. Voltage A: input EMI filtering; A: bridge rectifier; regulation is provided by varying the ratio of on to off B: input filter capacitors; Toolbox time. In contrast, a linear power supply must dissipate Between B and C: primary side heat sink; the excess voltage to regulate the output. This higher C: transformer; What links here Between C and D: secondary side heat sink; efficiency is the chief advantage of a switched-mode Related changes D: output filter coil; power supply. -
ON Semiconductor Is an Equal Opportunity/Affirmative Action Employer
ON Semiconductor Is Now To learn more about onsemi™, please visit our website at www.onsemi.com onsemi and and other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. onsemi reserves the right to make changes at any time to any products or information herein, without notice. The information herein is provided “as-is” and onsemi makes no warranty, representation or guarantee regarding the accuracy of the information, product features, availability, functionality, or suitability of its products for any particular purpose, nor does onsemi assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using onsemi products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by onsemi. “Typical” parameters which may be provided in onsemi data sheets and/ or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. onsemi does not convey any license under any of its intellectual property rights nor the rights of others. -
Corel DESIGNER
Mains Harmonics REO (UK) LTD, Units 2 - 4 Callow Hill Road, Craven Arms Business Park, Craven Arms, Shropshire SY7 8NT UK Tel: 01588 673411 Fax: 01588 672718 REO UK LTD Email: sales@ reo.co.uk W ebsite: www.reo.co.uk Contents W hat are mains harmonics? 1 2 Mains harmonics are voltages and/or Harmonics with numbers that are divisible W hat are mains harmonics? currents that occur in an AC mains by three (3rd, 6th, 9th, 12th, 15th, etc.) are 2 electricity power supply at multiples of the called zero sequence harmonics, because nominal mains frequency. 'Even-order' the fields they cause in a three-phase AC harmonic frequencies are those that occur motor are stationary 2 they do not rotate. How do mains harmonics occur? 3 at even-numbered multiples of the Odd-numbered 'zero-sequence' harmonics nominal mains frequency, whereas 'odd- (3rd, 9th, 15th, etc.) are called triplens. order' harmonics occur at odd-numbered W hy are harmonics an increasingly important issue? 7 multiples, as shown in Table 1. Table 1 Some examples of harmonics for four common AC power supply frequencies How mains harmonics cause harm 9 Harmonic Number Even Odd 16.667Hz 50Hz 60Hz 400Hz Order Order Relevant standards and codes on mains harmonics 28 1 (the fundamental 16.667Hz 50Hz 60Hz 400Hz mains frequency) Likely sources of harmonic interference 33 2 33.333 100 120 800 3 50 150 180 1.2kHz The influence of the mains distribution systems impedance 35 4 66.667 200 240 1.6kHz 5 83.333 250 300 2kHz 6 100 300 360 2.4kHz How can harmonics be detected and measured 37 7 116.667 350 420 2.8kHz 8 133.333 400 480 3.2kHz Testing for immunity to harmonically distorted mains supplies 42 9 150 450 540 3.6kHz 10 166.667 500 600 4kHz Prevention and avoidance measures 42 11 183.333 550 660 4.4kHz 12 200 600 720 4.8kHz 13 216.667 650 780 5.2kHz Harmonic mitigation products from REO 61 14 233.333 700 840 5.6kHz 15 250 750 900 6kHz References and further reading 63 ...etc.. -
Chapter 12 Three-Phase Controlled Rectifiers ∫
CHAPTER 12 THREE-PHASE CONTROLLED RECTIFIERS Author : Juan Dixon (Ph.D.) Department of Electrical Engineering Pontificia Universidad Católica de Chile Vicuña Mackenna 4860 Santiago, CHILE. 12.1 INTRODUCTION Three-phase controlled rectifiers have a wide range of applications, from small rectifiers to large High Voltage Direct Current (HVDC) transmission systems. They are used for electro-chemical process, many kinds of motor drives, traction equipment, controlled power supplies, and many other applications. From the point of view of the commutation process, they can be classified in two important categories: Line Commutated Controlled Rectifiers (Thyristor Rectifiers), and Force Commutated PWM Rectifiers. 12.2 LINE COMMUTATED CONTROLLED RECTIFIERS. 12.2.1 Three- phase hal - wavef rectifie r The figure 12.1 shows the three-phase half-wave rectifier topology. To control the load voltage, the half wave rectifier uses three, common-cathode thyristor arrangement. In this figure, the power supply, and the transformer are assumed ideal. The thyristor will conduct (ON state), when the anode-to-cathode voltage vAK is positive, and a firing current pulse iG is applied to the gate terminal. Delaying the firing pulse by an angle a does the control of the load voltage. The firing angle a is measured from the crossing point between the phase supply voltages, as shown in figure 12.2. At that point, the anode-to-cathode thyristor voltage vAK begins to be positive. The figure 12.3 shows that the possible range for gating delay is between a=0° and a=180°, but in real situations, because of commutation problems, the maximum firing angle is limited to around 160°. -
Checking out the Power Supply the Power Supply Must Be Carefully Checked out a Good Many Australian-Made Sets from the Mid 1930S-1950 Era
Checking out the power supply The power supply must be carefully checked out a good many Australian-made sets from the mid 1930s-1950 era. Fig.1 before switching on a vintage radio. The shows a typical circuit configura- components most likely to be at fault are the tion but there are other variations. electrolytic capacitors, most of which should be For example, some rectifiers re- quire a cathode voltage of 6.3V AC, replaced as a matter of course. not 5V. Similarly, not all radio valves use Although only a few parts are in- (equivalent to 570 volts, centre- 6.3V heater supplies. There are volved, the power supply is a com- tapped). 2.5V valves, 4V valves and 12V mon source of problems in vintage The 5V and 6.3V AC supplies are valves in some late model sets. In radios. It should be carefully check- wired straight from the trans- these radios, the low tension ed out before power is applied, as a former to the filaments and voltages on the transformer will be fault here can quickly cause heaters. However, the high tension different — but that's about all. damage to critical components. supply must be rectified to give a The high tension voltage will still be Most mains-operated valve high-tension DC supply for the well in excess of 250 volts. radios have three separate secon- anodes and screens for the various The output from the rectifier dary windings on the power receiving and output valves. A valve will not be pure DC but does transformer. -
Tube Ultragain T1953
Users Manual ENGLISH Version 1.2 December 2002 T1953 TUBE ULTRAGAIN TUBE ULTRAGAIN T1953 SAFETY INSTRUCTIONS CAUTION: To reduce the risk of electric shock, do not remove the cover (or back). No user serviceable parts inside; refer servicing to qualified personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. This symbol, wherever it appears, This symbol, wherever it appears, alerts alerts you to the presence of you to important operating and mainte- uninsulated dangerous voltage inside nance instructions in the accompanying the enclosurevoltage that may be literature. Read the manual. sufficient to constitute a risk of shock. DETAILED SAFETY INSTRUCTIONS: All the safety and operation instructions should be read before the appliance is operated. Retain Instructions: The safety and operating instructions should be retained for future reference. Heed Warnings: All warnings on the appliance and in the operating instructions should be adhered to. Follow instructions: All operation and user instructions should be followed. Water and Moisture: The appliance should not be used near water (e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool etc.). Ventilation: The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings, or placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. -
Bremner, Duncan James (2015) 25 Years of Network Access Technologies: from Voice to Internet; the Changing Face of Telecommunications
Bremner, Duncan James (2015) 25 years of network access technologies: from voice to internet; the changing face of telecommunications. PhD thesis. http://theses.gla.ac.uk/6670/ Copyright and moral rights for this thesis are retained by the author A copy can be downloaded for personal non-commercial research or study, without prior permission or charge This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the Author The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the Author When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given. Glasgow Theses Service http://theses.gla.ac.uk/ [email protected] 25 years of Network Access Technologies: From Voice to Internet; the changing face of telecommunications Duncan James Bremner A Thesis submitted to School of Engineering College of Science and Engineering University of Glasgow in fulfilment of the requirements for the Degree of Doctor of Philosophy by published work May 2015 Abstract This work contributes to knowledge in the field of semiconductor system architectures, circuit design and implementation, and communications protocols. The work starts by describing the challenges of interfacing legacy analogue subscriber loops to an electronic circuit contained within the Central Office (Telephone Exchange) building. It then moves on to describe the globalisation of the telecom network, the demand for software programmable devices to enable system customisation cost effectively, and the creation of circuit and system blocks to realise this. -
Automatic Guitar Tuner Group 1
University of Central Florida Automatic Guitar Tuner Group 1 Trenton Ahrens, Alex Capo, Ernesto Wong 12-4-2014 EEL4919 Fall 2014 Group 1 - Trenton Ahrens, Alex Capo, Ernesto Wong Table of Contents 1 Executive Summary ....................................................................................... 1 2 Project Description ......................................................................................... 2 2.1 Motivation ................................................................................................ 2 2.2 Objectives ................................................................................................ 3 2.2.1 Tuning Time ...................................................................................... 3 2.2.2 Accuracy ........................................................................................... 3 2.2.3 Convenience ..................................................................................... 4 2.2.4 Budget .............................................................................................. 4 2.2.5 Experience ........................................................................................ 4 2.2.6 Knowledge Gain................................................................................ 4 2.3 Project Requirements and Specifications ................................................ 4 2.3.1 Accuracy ........................................................................................... 5 2.3.2 Tuning Preference ........................................................................... -
Users Guide for the Non-Inverted LM3875 Kit Written by Brian Bell and Sandy H
Users Guide for the Non-Inverted LM3875 Kit Written by Brian Bell and Sandy H. 1 (26) Users Guide for the Non-Inverted LM3875 Kit (also known as the Gainclone kit) 1 INTRODUCTION.......................................................................................................................................... 2 1.1 HISTORY ................................................................................................................................................... 3 1.2 TERMINOLOGY USED IN THIS DOCUMENT................................................................................................. 4 2 BUILDING INSTRUCTIONS FOR THE KIT ........................................................................................... 5 2.1 PREMIUM KIT CONTENTS ......................................................................................................................... 5 2.2 BASIC KIT CONTENTS............................................................................................................................... 5 2.3 SOLDERING TIPS ....................................................................................................................................... 6 2.4 ASSEMBLING THE AMPLIFIER PCB........................................................................................................... 7 2.5 ASSEMBLING THE RECTIFIER PCB ......................................................................................................... 13 2.6 PICTURE OF FINISHED PCBS .................................................................................................................. -
Carbone Monoxide (CO) Detection Device Based on the Nickel Antimonate Oxide and a DC Electronic Circuit
applied sciences Article Carbone Monoxide (CO) Detection Device Based on the Nickel Antimonate Oxide and a DC Electronic Circuit José Trinidad Guillen Bonilla 1,2,* ,Héctor Guillén Bonilla 3, Verónica María Rodríguez Betancourtt 4, Antonio Casillas Zamora 3, Jorge Alberto Ramírez Ortega 3, Lorenzo Gildo Ortiz 5, María Eugenia Sánchez Morales 6 , Oscar Blanco Alonso 5 and Alex Guillén Bonilla 7,* 1 Departamento de Electrónica, Centro Universitario de Ciencias Exactas e Ingenierías (C.U.C.E.I.), Universidad de Guadalajara, Blvd. M. García Barragán 1421, Guadalajara 44410, Jalisco, Mexico 2 Departamento de Matemáticas, Centro Universitario de Ciencias Exactas e Ingenierías (C.U.C.E.I.), Universidad de Guadalajara, Blvd. M. García Barragán 1421, Guadalajara 44410, Jalisco, Mexico 3 Departamento de Ingeniería de Proyectos, Centro Universitario de Ciencias Exactas e Ingenierías (C.U.C.E.I.), Universidad de Guadalajara, Blvd. M. García Barragán 1421, Guadalajara 44410, Jalisco, Mexico 4 Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías (C.U.C.E.I.), Universidad de Guadalajara, Blvd. M. García Barragán 1421, Guadalajara 44410, Jalisco, Mexico 5 Departamento de Física, Centro Universitario de Ciencias Exactas e Ingenierías (C.U.C.E.I.), Universidad de Guadalajara, Blvd. M. García Barragán 1421, Guadalajara 44410, Jalisco, Mexico 6 Departamento de Ciencias Tecnológicas, Centro Universitario de la Ciénega (CUCienéga), Universidad de Guadalajara, Av. Universidad No. 1115, LindaVista, Ocotlán C.P. 47810, Jalisco, Mexico 7 Departamento de Ciencias Computacionales e Ingenierías, Centro Universitario de los Valles (CUValles), Universidad de Guadalajara, Carretera Guadalajara-Ameca Km. 45.5, Ameca 46600, Jalisco, Mexico * Correspondence: [email protected] (J.T.G.B.); [email protected] (A.G.B.); Tel.: +52-(375)-7580-500 (ext. -
Design Approach for a MERUS™ MA12070 Based Musical Instrument Bass Amplifier DEMO BASSAMP 60W MA12070
AN_2005_PL88_2005_091616 Design approach for a MERUS™ MA12070 based musical instrument bass amplifier DEMO_BASSAMP_60W_MA12070 About this document Scope and purpose This document describes the practical and electrical design of a wall-adapter or battery-powered, 60 W, professionally featured and ultraefficient pocket-sized bass instrument amplifier. It is modeled after classic vacuum-tube bass amplifier topology. It utilizes the exceptional audio quality and best-in-class efficiency of Infineon’s MERUSTM amplifier technology to amplify every nuance of a genuine vacuum-tube pre-amplifier. Intended audience This document is for musical audio amplifier design engineers, audio system engineers and portable audio design engineers. Table of contents About this document ....................................................................................................................... 1 Table of contents ............................................................................................................................ 1 1 Introduction .......................................................................................................................... 2 2 Features and performance ...................................................................................................... 3 3 User interface ........................................................................................................................ 5 4 Amplifier topology ................................................................................................................ -
When Was the Last Time You Heard a Perfect Room? Home Theater Acoustical Problems and Equalization Solutions
® Technical Paper Number 108 When Was The Last Time You Heard A Perfect Room? Home Theater Acoustical Problems and Equalization Solutions by Frederick J. Ampel All Rights Reserved. Copyright 1995. Frederick J. Ampel is now active in or has been active in almost every aspect of the audio/video industry. He has an MS in Television Sciences with a BA in Music. He is the principal Editorial Consultant with Systems Contractor News and past editor of Sound and Video Contractor magazine. His career includes live sound reinforcement, broadcast production, recording studio design, and home theater system design, installation and equipment development. Price $1.00 ® 22410 70th Avenue West, Mountlake Terrace, WA 98043 (425) 775-8461 ® ® When Was The Last Time You Heard A Perfect Room? Home Theater Acoustical Problems and Equalization Solutions System designers, installers, and consultants face a constant series of problems in delivering the kind of Home Theater performance clients have a right to expect for their money. Each and every room is unique, and each one presents a different blend of physical, and electrical limitations that can make even the most expensive loudspeaker system function well below its potential. One of the most overlooked technologies for correcting, enhancing, and polishing the performance of loudspeaker systems used in multi-channel and distributed whole house audio applications is equalization. No, we are not talking about the ubiquitous, and essentially useless “tone controls” pro- vided on almost every preamplifier/receiver, or similar component. While having some application for the end users to adjust overall system tonality, these limited capability circuits simply cannot provide a sufficient range of control to modify the spectral content of the loudspeaker information presented to the room, and ultimately to the listener(s).