Mm100 and Dp100 Tm High Definition Matchmaker
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Collins Broadcast Equipment Catalog 1969
~ COLLINS ~ Broadcast Equipment • • ' : • , • : • : •~ ' • • • ~ ' I • ' ' : '. : . ' . '', . : . , . I • • : ' < ' • ' ' ' I . ' , . : : . ' • : J ' ' • • ' ' I • . , . ' . www.SteamPoweredRadio.Com ,, Collins Broadcast Equipment Catalog No. 46 Table of Contents Collins Radio Company. 2 AM Transmitters 5 FM Transmitters . 13 FM Antennas . 30 Audio Equipment . 36 Audio Accessories . 62 Remote Equipment ......................... 71 Measuring-Monitoring-Remote Control .......... 75 Tables-Charts-Graphs . 83 Index by Description ........................ l 04 Index by Type Number ...................... 105 Sales Policy ............................... I 07 Equipment descriptions in this catalog are condensed so that the complete line of broadcast units supplied by Collins Radio Com pany can be shown. For more information on any of these units, you are invited to contact your Collins Broadcast Sales Engineer or Collins Radio Company, Broadcast Marketing, Dallas, Texas. Customers in countries other than the United States are invited to contact the nearest International Sales Omce or Collins Inter national Division, Dallas, Texas. All specifications contained within are subject to change without notice. ©Collins Radio Company 1969 523-056/3/6-001430, 4-1-69 Printed in U.S.A. www.SteamPoweredRadio.Com Collins Radio Company Collins Radio Company is an international elec tronics corporation combining communication, com putation and control equipment into total systems which acquire, transfer, store, extract, process and condense information -
BASS GUITAR PREAMP DESIGN Dave Sampson I’D Like to Dedicate This Work to My Long Term Partner Louise
BASS GUITAR PREAMP DESIGN Dave Sampson I’d like to dedicate this work to my long term partner Louise. Without her love, patience and encouragement this work would not have been possible. Audiodomain.blogspot.co.uk 1 @homewith_dave [email protected] TABLE OF CONTENTS Chapter 1 ........................................................................................................................ 7 1.1 History .............................................................................................................................. 7 1.2 Aims & Objectives ............................................................................................................. 7 1.3 Summary of Report Structure ........................................................................................... 7 Chapter 2 ........................................................................................................................ 8 2.1 Existing Solutions .............................................................................................................. 8 2.2 Input stage ........................................................................................................................ 8 2.2.1 Input Signal ................................................................................................................ 8 2.2.2 Attenuation ................................................................................................................ 9 2.2.3 Impedance Bridging .................................................................................................. -
High Performance Audio Power Amplifiers
High Performance Audio Power Amplifiers for music performance and reproduction Newnes An imprint of Butterworth-Heinemann Ltd Linacre House, Jordan Hill, Oxford OX2 8DP A division of Reed Educational and Professional Publishing Ltd OXFORD BOSTON JOHANNESBURG MELBOURNE NEW DELHI SINGAPORE First published 1996 Reprinted with revisions 1997 © Ben Duncan 1996 © B. D. 1997 All rights reserved. No part of this publication may be reproduced in any material form (including photocopying or storing in any medium by electronic means and whether or not transiently or incidentally to some other use of this publication) without the written permission of the copyright holder except in accordance with the provisions of the Copyright, Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London, England W1P 9HE. Applications for the copyright holder's written permission to reproduce any part of this publication should be addressed to the publishers TRADEMARKS/REGISTERED TRADEMARKS Computer hardware and software brand names mentioned in this book are protected by their respective trademarks and are acknowledged. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library ISBN 0 7506 2629 1 Typeset by P.K.McBride, Southampton Printed and bound in Great Britain High Performance Audio Power Amplifiers for music performance and reproduction Ben Duncan, A.M.I.O.A., A.M.A.E.S., M.C.C.S international consultant in live show, recording & domestic audio electronics and electro-acoustics. Foreword Ben Duncan is one of those rare individuals whose love and enthusiasm for a subject transcends all the usual limits on perception and progress. -
EEL 4914 Senior Design I Solar Powered Audio Amplifier with DSP Effects
EEL 4914 Senior Design I Solar Powered Audio Amplifier with DSP Effects Team # 16: Hugo Castellanos Sandra Muñoz Gretchen Rivera 1 Table of Contents 1 Technical objectives and requirements .......................................................................5 1.1 Audio Amplification Subsystem ............................................................................................5 1.2 Digital Signal Processing Subsystem ...................................................................................5 1.3 Power Management System....................................................................................................5 2 Technology Research ..........................................................................................................6 2.1 Previous Works / Similar Projects.......................................................................................6 2.1.1 Similar Projects......................................................................................................................................6 2.1.2 Commercial Amplifier Products.....................................................................................................8 2.2 Solar Panels............................................................................................................................... 11 2.2.1 Crystalline Silicon PVs ..................................................................................................................... 11 2.2.2 Thin film PVs....................................................................................................................................... -
Rf Energy Harvesting and Wireless Power Transfer
International Journal of Electronics and Communication Engineering (IJECE) ISSN 2278-9901 Vol. 2, Issue 4, Sep 2013, 25-32 © IASET RF ENERGY HARVESTING AND WIRELESS POWER TRANSFER P. KRISHNACHAITANYA & A. PUSHPALATHA Computational Engineering, RGUKT-APIIIT, Andhra Pradesh, India ABSTRACT Radio Frequency Energy harvesting is a research topic of increasing interest, related to sustainability, which could become a promising alternative to existing energy resources. RF energy harvesting holds a promise able future for generating a small amount of electrical power to drive partial circuits in wirelessly communicating electronic devices. The paper will show all the activities addressed to design a wideband system to recover wideband energy from electromagnetic sources present in the environment. The main idea is to develop battery-free wireless sensors able to capture the available energy into the mentioned bandwidth. The energy of RF waves used by devices can be harvested and used to operate in more effective and efficient way. This paper highlights the performance of energy harvesting in an efficient way by using a simple voltage doubler. With slight modifications we attained high output voltage from harvested RF energy. KEYWORDS: Energy Harvesting, RF Energy, Voltage Doubler, Impedance Matching, Recteanna INTRODUCTION In recent years the use of wireless devices is growing in many applications like mobile phones, laptops or sensor networks. This increase in wireless applications has generated an increasing use of batteries. Many research teams are working on the autonomy of the batteries by reducing the consumption of the devices and to improve the energy density of batteries. Through the years, technology has allowed the cellular phone to shrink not only the size of the ICs, but also the batteries. -
Impedance & Audio Interfaces
Impedance & Audio Interfaces PNW Chapter of the AES March 2017 Electrical Impedance Basics Resistance (Resistor) Ratio of current (I) and voltage (E or V) Unit: Ω, Ohm ● Resistors ● Wires ● Circuit board traces Electrical Impedance Basics Capacitive Reactance (Capacitor) Ratio of current (I) and the change in voltage over time (dV/dt) Units: F, Farads ● Capacitors ● Two wires near each other ● PCB Traces near each other ● Any two conductive surfaces “Resists” instantaneous changes in voltage Electrical Impedance Basics Inductive Reactance (Inductor) Ratio of voltage (E or V) and the change in current over time (dI/dt) Units: H, Henries ● Inductors ● Wires or coils of wire ● PCB Traces ● Transformers “Resists” instantaneous changes in current Audio Interfaces What’s the point of connecting two things together? ● Information transfer ● Information in what form? ○ Analog audio: frequency, phase and amplitude ○ Digital audio: frequency (data rate) ○ The higher the frequency, the more cable / wire impedance matters ● Across what distance? ○ The longer the distance, the more cable / wire impedance matters Audio Interfaces What to do with this information? ● Measure it (microphone level or line level audio) ○ Transfer a measureable voltage ○ Minimizes losses in the interface ● Do some work with it (telephone system or power amplifier) ○ Transfer usable power ○ Drive a loudspeaker ○ Heat a rack room ○ More losses in the interface ● Go the distance ○ Transmission line behaviors Audio Interfaces: Voltage Transfer Very common in pro and consumer