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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


Audio fundamentals. An introduction to impedance and its relationship to the concepts of resistance, inductance and capacitance.
AUDIO AMATEUR 3/1972 [Mar 1973] (v.3#3) pg. 27

Measuring power supply output impedance in audio applications. Part 1.
AUDIO AMATEUR 1/1983 [Apr 1983] (v.14#1) pg. 13

Measuring power supply output impedance in audio applications. Part 2.
AUDIO AMATEUR 2/1983 [Jun 1983] (v.14#2) pg. 20
Correction AUDIO AMATEUR 3/1983 [Sep 1983] (v.14#3) pg. 56

Make the right match. How to meet your amplifier's power supply needs. At look at how power supply impedance affects the output signal. Includes setups to measure the power supply's impedance.
AUDIO AMATEUR 3/1984 [Jul 1984] (v.15#3) pg. 14
Correction AUDIO AMATEUR 1/1985 [Jan 1985] (v.16#1) pg. 53
Added Info AUDIO AMATEUR 1/1985 [Jan 1985] (v.16#1) pg. 55

How to calculate impedance in electronic circuits.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1981 (v.37#3) pg. 48

How to build a cheap and easy r.f. noise bridge. It is used to measure the impedance of an antenna.
CQ. THE RADIO AMATEUR'S JOURNAL May 1984 (v.40#5) pg. 56

The concept of "negative resistance" and a negative impedance converter (NIC) are explained and illustrated.
ELECTRONICS NOW Jul 1996 (v.67#7) pg. 12

Simple circuits to measure impedance. (1) Measure impedance of any device driven by a signal generator. (2) Measure output impedance of any signal source.
ELECTRONICS NOW Jun 1997 (v.68#6) pg. 8

Understanding source impedance. Measuring a battery cell's internal resistance.
ELECTRONICS NOW Aug 1997 (v.68#8) pg. 63

Using an audio oscillator, resistance-substitution box, and audio voltmeter to perform some basic audio electronic tests. (1) Measuring frequency response. (2) Determining input impedance. (3) Determining output impedance.
ELECTRONICS NOW Jan 1998 (v.69#1) pg. 28

Determining the impedance of various strip-line materials using graph and formulas.
ELECTRONICS WORLD Sep 1970 (v.84#3) pg. 31

How to measure audio amplifier output impedance (which varies as loudspeaker impedance varies).
GLASS AUDIO 5/1995 (v.7#5) pg. 50

Circuit-impedance measurements. A comparison of the most popular technique with a more accurate alternative.
GLASS AUDIO 4/1996 (v.8#4) pg. 46
Correction GLASS AUDIO 5/1996 (v.8#5) pg. 60

Clarification of the effects of negative feedback upon the output impedance of an amplifier.
GLASS AUDIO 4/1996 (v.8#4) pg. 72

Single-ended amplifier output impedance. Part 1. Includes advice on interfacing the amp with loudspeakers.
GLASS AUDIO 3/1997 (v.9#3) pg. 42

Single-ended amplifier output impedance. Part 2. Effects at low frequencies.
GLASS AUDIO 6/1997 (v.9#6) pg. 28

Brief overview for laymen about the factors considered in tapping output transformer (OPT) primaries.
GLASS AUDIO 1/1998 (v.10#1) pg. 60

Method for determining the impedance of tube-type output transformers.
GLASS AUDIO 5/2000 (v.12#5) pg. 56
Added Info AUDIOXPRESS Apr 2001 (v.32#4) pg. 84, 86

Loudspeaker impedance. A hi-fi hassle that won't go away. What is impedance and how does it impact loudspeaker design and hi-fi systems.
HANDS-ON ELECTRONICS Mar-Apr 1986 (v.3#2) pg. 49

Speaker "Z" Tester is a simple bridge circuit that can determine the impedance of an unmarked speaker.
HANDS-ON ELECTRONICS Mar 1988 (v.5#3) pg. 82

A simple impedance bridge. This two-component project lets you measure impedance, determine resonate frequency, calculate input/output impedance ratios, etc. Used with an oscillator and an AC voltmeter.
MODERN ELECTRONICS [2] Nov 1985 (v.2#5) pg. 50

Build an impedance meter that measures from 1 ohm to 1 megohm. Battery powered. Est. cost: $35.
POPULAR ELECTRONICS [1] Oct 1972 (v.2#4) pg. 68

How to measure the impedance of a loudspeaker.
RADIO-ELECTRONICS Apr 1986 (v.57#4) pg. 6

Finding faults in cables (transmission lines) using time-domain reflectometry. How it works and tips on its uses.
RADIO-ELECTRONICS Mar 1987 (v.58#3) pg. 66

Measure the effective AC impedance of a circuit using this simple test circuit and a VOM meter.
RADIO-ELECTRONICS Mar 1990 (v.61#3) pg. 21
Added Info RADIO-ELECTRONICS May 1990 (v.61#5) pg. 16