A_Guide_to_Digital_Analogue_Multimeters___2015.pdf

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A G
UIDE
T
O
D
IGITAL
& A
NALOGUE
M
ULTIMETERS
By Ian Poole
Copyright © Ian Poole
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Radio-Electronics.com
A
BOUT
THIS
B
OOK
The multimeter has been available in a variety of forms for very many years. It forms the
mainstay of many test workshops and development laboratories. Measuring the basic
quantities of voltage (AC & DC), current (AC & DC) and resistance the multimeter is able
to make the main measurements required for many tests.
Nowadays with integrated circuit technology digital multimeters are able to make many
more types of measurement from capacitance and inductance to frequency, time,
temperature and much more.
In order to make the best use of the multimeter, it is necessary to know how one works
and what its limitations are. In this way, it is possible to utilise it more effectively, and in
ways that are able to extend its use.
This book aims to provide an approachable grounding into both analogue and digital
multimeter technology, explaining how these instruments work,, what their specifications
mean, their limitations, and most important of all how to use them. Some tricks of the
trade are also revealed, enabling the reader to use these instruments in many new,
interesting and useful ways.
I
NDEX
About this Book
Index
Chapter 1: Introduction to Multimeters
Multimeter History
Multimeter applications today
Chapter 2: Analogue Multimeter
Analogue multimeter meter basics
Analogue multimeter specifications
Chapter 3: Using an analogue multimeter
Analogue meter advantages & disadvantages
Parallax errors
Using the correct range
Analogue meter zero position adjustment
Finishing using multimeter
Making measurements using an analogue multimeter
Chapter 4: Digital Multimeter
DMM facilities
How a DMM works
DMM specifications
DMM accuracy & Resolution
Chapter 5: Using a DMM
Digital Multimeter Measurement Basics
Voltage Measurements
Current Measurements
Test Points and Links
Current Probes
Current Measurement Precautions
Resistance Measurements
Using a DMM for Other Measurements
Other Books
C
HAPTER
1: I
NTRODUCTION
TO
M
ULTIMETERS
The multimeter is an instrument that has been in use for many decades and they are widely
used today as much as ever. They have found considerable use because they are easily
able to make many of the basic measurements required in all forms of electrical and
electronic testing.
Today, it is possible to buy a multimeter with a high level of performance for a relatively
low sum. Having moved from analogue meters where precision meters and components
were required, to digital instruments where many of the functions can be accurately
incorporated into integrated circuits, these instruments are often cheaper to make. Also,
their widespread use means that they are manufactured in large quantities enabling the
savings of scale to be made.
Multimeters have been available for many years. Over the years the technologies used in
them have changed, taking them from large expensive instruments to the portable accurate
items they are today.

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