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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
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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.


Slewing induced distortion (SID) in audio amplifiers. Part 2. (1) Total harmonic distortion tests for SID. (2) Two-tone intermodulation distortion tests for SID.
AUDIO AMATEUR 2/1977 [May 1977] (v.8#2) pg. 22, 37

Report on assembly and use of Heath's IM-5258 Total Harmonic Distortion analyzer and sensitive audio voltmeter kit.
AUDIO AMATEUR 2/1978 [Jun 1978] (v.9#2) pg. 45
Added Info AUDIO AMATEUR 2/1979 [Apr 1979] (v.10#2) pg. 51

Muller nuller. Construct a harmonic distortion analyzer that has a measurement range of 20-to-20,000Hz, a bandwidth at least to 1.5Mhz, a residual of 0.004% or less, etc.
AUDIO AMATEUR 5/1982 [Jan 1983] (v.13#5) pg. 7
Correction AUDIO AMATEUR 1/1983 [Apr 1983] (v.14#1) pg. 54
Correction AUDIO AMATEUR 3/1983 [Sep 1983] (v.14#3) pg. 56

The tape-tweaker's pal. Instrument for aligning a tape recorder has three sections (variable-frequency oscillator, spot-frequency oscillator, and a spot THD analyzer). Also useful for checking frequency response and midband distortion on any piece of audio gear. Part 1.
AUDIO AMATEUR 5/1982 [Jan 1983] (v.13#5) pg. 13

A new harmonic distortion tool. Notch-filter designs suitable for use in total-harmonic-distortion (THD) measurements.
AUDIO AMATEUR 2/1996 [May 1996] (v.27#2) pg. 42

Electronics Workbench (EW) in action. Using the EW computer program to measure harmonic distortion in a power amp design.
AUDIO AMATEUR 3/1996 [Sep 1996] (v.27#3) pg. 30

THD is meaningless. An RF amplifier designer argues that total harmonic distortion (THD) figures are irrelevant, irrational, and completely spurious. Part 1.
AUDIOXPRESS Jan 2001 (v.32#1) pg. 36
Added Info AUDIOXPRESS Aug 2001 (v.32#8) pg. 73

THD is meaningless. Part 2.
AUDIOXPRESS Feb 2001 (v.32#2) pg. 54

A digital upgrade for the Hewlett Packard 339A Distortion Measurement Set. Replace the 30kHz low-pass radio broadcast test filter with a 22 kHz low-pass filter suitable for THD (total harmonic distortion) measurements.
AUDIOXPRESS Mar 2003 (v.34#3) pg. 16

Build a THD (total harmonic distortion) analyzer to test stereo receivers, preamps, and power amps. Will detect THD levels down to 0.005%.

Harmonic-distortion meter measures amplifier distortion down to 0.1% with good accuracy. Est. cost: $40.
ELECTRONICS ILLUSTRATED Jul 1970 (v.13#4) pg. 45

Sound of the machine. The hidden harmonics behind THD. Results of extensive testing of vacuum-tube driver circuits sheds new light on the significance of THD (total harmonic distortion).
GLASS AUDIO 4/1997 (v.9#4) pg. 1
Added Info GLASS AUDIO 1/1999 (v.11#1) pg. 53

THD (total harmonic distortion) analyzer circuit is used in conjunction with a true-RMS voltmeter to measure audio-amplifier performance.
POPULAR ELECTRONICS [2] Nov 1994 (v.11#11) pg. 30
Added Info POPULAR ELECTRONICS [2] Jul 1995 (v.12#7) pg. 30

THD (total harmonic distortion) analyzer for testing audio amplifiers up to 600 watts. Will detect THD levels down to 0.005%.
RADIO-ELECTRONICS Dec 1991 (v.62#12) pg. 47
Correction RADIO-ELECTRONICS Apr 1992 (v.63#4) pg. 22

Build a THD (total harmonic distortion) tester adapter which you can use with an AC VTVM or Hi-Z VOM. Est. cost: $11.
RADIO-TV EXPERIMENTER #806 Oct-Nov 1966 (v.21#2) pg. 62