TV & video COMPUTERS AND MICROPROCESSORS 4 -WAY DAC EXTENSION AUDIO AND HI-FI 8 -BIT ADC 69 AUDIO -CONTROLLED MAINS SWITCH 9 8 -BIT DAC 7 AUDIO LINE DRIVER KEY INPUT FOR MSX MICROS 71 AUDIO TRANSFER EQUALIZER 1 32 KBYTE PSEUDO ROM 72 COMPRESSOR TRACK ADAPTOR 75 CURRENT CORRECTED AF AMPLIFIER ALTERNATIVES 75 DIGITAL AUDIO SELECTOR TRACER 76 DIGITAL VOLUME CONTROL I 15 A -D CONVERTER FOR JOYSTICKS 78 DIGITAL VOLUME CONTROL II 17 BI-DIRECTIONAL PARALLEL INTERFACE FOR DISCOMIXER 18 C64 79 HEADPHONE AMPLIFIER 22 BI-DIRECTIONAL SERIAL -PARALLEL CON - HI -Fl HEADPHONE AMPLIFIER 25 VERTER 8 HIGH DYNAMIC RANGE MIXER 26 BUS DIRECTION ADD-ON FOR MSX EXTEN- INTEGRATED STEREO AMPLIFIER 27 SIONS 82 LOUDSPEAKER PROTECTION I 27 COMMUNICATION PROGRAM FOR C64 83 LOUDSPEAKER PROTECTION II 29 CPU GEAR/BOX 86 LOUDSPEAKER PROTECTION III 3 CURRENT LOOP FOR MODEM 87 LOW -NOISE RIAA PREAMPLIFIER 32 DIRECT READING DIGITIZER 88 MICROPHONE PRE -AMPLIFIER WITH DISCRETE DAC 9 MUTE SWTICH 36 DRIVE SELECTOR 91 MICROPHONE -SIGNAL PROCESSOR FILTERED CONNECTOR 92 MINI -AMPLIFIER 4 FLOPPY CENTRING UNIT 92 MINI STEREO AMPLIFIER 4 FLOPPY DISC DRIVE 93 MOSFET POWER AMPLIFIER 41 HEXADECIMAL KEYBOARD 94 NOISE GATE 42 IMPROVED SOUND FOR THE BBC SIMPLE PRE -AMPLIFIER 43 MICRO 95 SINGLE -CHIP 4 W AMPLIFIER 44 JOYSTICK ADAPTOR 96 SMD HEADPHONE AMPLIFIER 45 LEVEL ADAPTOR FOR ANALOGUE SPEECH PROCESSOR WITH JOYSTICKS 97 BACKGROUND SUPPRESSION 46 LISTEN -IN KEY FOR DATA RECORDERS.
Electrophonics FLASHING REAR LIGHT HF & VHF GARAGE STOP LIGHT Hobbies & pastimes HALOGEN LAMP PROTECTOR Home & garden LED REVOLUTION COUNTER Power supplies MOTOR -CYCLE GEAR INDICATOR Test & measurement 11. Audio & hi-fi CAR LIGHTS MONITOR Cars & bicycles CAR RADIO ALARM I Computers & microprocessors CAR RADIO ALARM II 6 4. First printed 1988 Copyright 1988 Elektuur BV Printed in the Netherlands ISBNĥ contents BRAKE LIGHTS MONITOR CAR BURGLAR ALARM CAR FUSE MONITOR CIRCUITS FOR: 1. This book is sold subject to the Standard Conditions of Sale of Net Books and may not be re -sold in the United Kingdom below the net price given by the publishers in their current price list. The publishers do not accept responsibility for failing to identify such patent or other protection. Patent protection may exist with respect to circuits, devices, components, etc. The circuits and other diagrams contained in this book are for domestic use only. Such written permission must also be obtained before any part of this book is stored in a retrieval system of any nature. No part of this book may be reproduced or transmitted in any form, or by any means, including photocopying and recording, without the prior written permission of the publishers. 3 Elektor Electronics 1 Harlequin Avenue Great West Road BRENTFORD Middlesex TW8 9EW ENGLAND Telephone: Telex: All rights reserved.
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