CONTENTS
Section 1--COMPONENT TESTING
Unijunction Transistors; Transistor Resistance Checks; S.C.R.s and I.C’s; Integrated Circuits; Dangers; I.C. Test Circuits; Digital I.C’s; Logic Voltages; TTL Outputs; Tristate Outputs; Decoders Etc.; Static Dynamic Testing; Component Analysis; L.E.D’s and L.C.D’s; Finally
Section 2--EXTENDING YOUR MULTIMETER
R.F. Voltages; The Circuit; High Resistance Probe; Dual Range Booster; Memory Probe; A.C. Voltage Booster; The Circuit; Gain Estimation Current Tracing; Leadout and Pinout Details
Based on above book: More Advanced Uses of the Multimeter
by R. A. PENFOLD
BERNARD BABANI (publishing) LTD THE GRAMPIANS SHEPHERDS BUSH ROAD LONDON W6 7NF ENGLAND (1989)
PREFACE
"Getting The Most From Your Multimeter" (BP239) covers the basics of multimeters and how they are used in fault finding on electronic projects. This book carries on where BP239 left off, and it is assumed that readers are either familiar with the earlier book, or are otherwise conversant with basic test procedures using a multimeter. Although you need a certain amount of technical knowledge in order to fully exploit the information in this publication, you do not need a really in depth knowledge of electronics.
Some simple component testing procedures are covered in BP239, and this theme is taken up here in Section 1 which covers some quick and simple methods of component testing plus some suggestions for detailed testing of certain types of component. Checking integrated circuits is often difficult without the aid of special test equipment of the type used by component manufacturers, but the simple techniques described here enable a wide range of integrated circuits to at least be given some basic checks, and comprehensive methods of testing are provided for some popular types of integrated circuit.
Although a multimeter is a supremely versatile piece of test equipment, it is not without its "blind spots". Section 2 covers some useful but simple and inexpensive add-ons that extend the capabilities of a multimeter. These include a.c. and d.c. booster amplifiers, memory circuits, and a current tracer add-on.
by R. A. Penfold
PLEASE NOTE
Although every care has been taken with the production of this book to ensure that any projects, designs, modifications and/or programs etc. contained herewith, operate in a correct and safe manner and also that any components specified are normally available in Great Britain, the Publishers do not accept responsibility in any way for the failure, including fault in design, of any project, design, modification or program to work correctly or to cause damage to any other equipment that it may be connected to or used in conjunction with, or in respect of any other damage or injury that may be so caused, nor do the Publishers accept responsibility in any way for the failure to obtain specified components.
Notice is also given that if equipment that is still under warranty is modified in any way or used or connected with home-built equipment then that warranty may be void.
1989 BERNARD BABANI (publishing) LTD
First Published - October 1989 Reprinted - November 1992 Reprinted - May 1995 British Library Cataloguing in Publication Data Penfold, R. A.
More advance uses of the multimeter.
1. Multimeters. Use I. Title 621.3815'48 ISBN 0 85934 210 7
Printed and Bound in Great Britain by Cox & Wyman Ltd, Reading.
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BERNARD BABANI ( publishing) LTD THE GRAMPIANS SHEPHERDS BUSH ROAD LONDON W6 7NF ENGLAND
More Advanced Uses of the Multimeter
-- This book is primarily intended as a follow-up to BP239, GETTING THE MOST FROM YOUR MULTIMETER, and also should be of value to anyone who already understands the basics of voltage testing and simple component testing.
--Thoroughly testing some components requires specialized and expensive equipment. In some cases there would not seem to be equipment of the right type available at any price. By using the techniques described in Section 1, you can test and analyze the performance of a range of components with just a multimeter ( plus a very few inexpensive components in some cases). Some useful quick check methods are also covered.
--While a multimeter is supremely versatile, it does have its limitations. The simple add-ons described in Section 2 extend the capabilities of a multimeter to make it even more useful. The add-ons described include an active r.f. probe, a high resistance probe, an a.c. sensitivity booster, and a current tracer unit.
Also see:
Modern Opto Device Projects (1987)
How to use signal and sweep generators (1953)