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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.


Crossover coil values. One method for measuring using a precision resistor, an audio oscillator, and a VTVM.
AUDIO AMATEUR 3/1978 [Sep 1978] (v.9#3) pg. 44

RFI (radio frequency interference) and the novice. Some basic information about its causes and remedies. Part 2. Benefit of ferrite chokes.
CQ. THE RADIO AMATEUR'S JOURNAL May 1988 (v.44#5) pg. 20

How to make your own tank circuit coil form from Plexiglas.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1998 (v.54#1) pg. 22

Tips on making coils of special values.
ELECTRONICS ILLUSTRATED Nov 1965 (v.8#6) pg. 46

Easy way to test transformers, coils, chokes, motors, ... (almost any device containing a winding).
ELECTRONICS NOW Nov 1994 (v.65#11) pg. 54
Added Info ELECTRONICS NOW Jan 1995 (v.66#1) pg. 10 (2 letters)

How to select RF chokes.
ELECTRONICS WORLD May 1966 (v.75#5) pg. 48

Special section on chokes and coils.
ELECTRONICS WORLD Oct 1966 (v.76#4) pg. 37

Coil tuning range nomogram. An accurate calculation of the amount of capacitance required to resonate a coil to a given frequency.
ELECTRONICS WORLD Mar 1968 (v.79#3) pg. 36

Nomogram to determine the "Q" of a coil by knowing design dimensions such as wire size, spacing of windings, and coil diameter.
ELECTRONICS WORLD Sep 1968 (v.80#3) pg. 88

Air-core coil nomogram.
ELECTRONICS WORLD Sep 1971 (v.86#3) pg. 45

Circuit to check the inductance of homemade electronic coils.
ELEMENTARY ELECTRONICS Nov-Dec 1980 (v.20#6) pg. 68

Using miniature power transformers as filter chokes in tube-type phono preamps and line amps.
GLASS AUDIO 6/2000 (v.12#6) pg. 63
Added Info AUDIOXPRESS May 2001 (v.32#5) pg. 81

Build a Maxwell inductance bridge to measure unmarked RF chokes, torroids, audio chokes, and power-supply filter chokes. Reads values from 500 microhenries to 90 henries.
HANDS-ON ELECTRONICS Feb 1988 (v.5#2) pg. 31

Coil tester is used to determine the integrity of a low-resistence, high-impedance coil like those found in TV receivers (such as CRT yokes, filters and flybacks). Est. cost: $20.
MODERN ELECTRONICS [2] Oct 1984 (v.1#1) pg. 76

Do-it-yourself electronic components. How to make your own inductors, coils, resistors, capacitors, electromagnets, solenoids and batteries.
MODERN ELECTRONICS [2] Jun 1989 (v.6#6) pg. 54

Variable-capacitance circuit tests hand-wound coils to determine frequency.
POPULAR ELECTRONICS [1] Jul 1973 (v.4#1) pg. 91

Inductance checker. Two-transistor circuit measures r-f inductance of chokes and coils using a conventional shortwave receiver.
POPULAR ELECTRONICS [1] Aug 1973 (v.4#2) pg. 98

Winding your own adjustable tuning coils. How to make your own slug-tuned variable inductors, RF transformers, and IF transformers.
POPULAR ELECTRONICS [2] Apr 1990 (v.7#4) pg. 92

Helpful hint on winding coils so that the wire is evenly spaced over the available length, but not touching.
POPULAR ELECTRONICS [2] Oct 1990 (v.7#10) pg. 87

Using "binocular core" coil forms as an alternative to toroidal cores for inductors, transformers, and baluns in RF circuits.
POPULAR ELECTRONICS [2] Apr 1994 (v.11#4) pg. 67

The right way to wind toroids (toroid transformers) for use as RF chokes.
POPULAR MECHANICS Apr 1984 (v.161#4) pg. 10

Resonate circuit design. A generic BASIC program for technicians and experimenters who work with RF circuits or RF filters. Will calculate the frequency, capacitance and inductance values for a resonate circuit and then go on to calculate the design of an air-wound coil.
RADIO-ELECTRONICS Apr 1985 (v.56#4) pg. 12 (ComputerDigest)
Correction RADIO-ELECTRONICS Jul 1985 (v.56#7) pg. 5 (ComputerDigest)

Coping with coils. Coils of any kind can be hard to locate. How to design and build your own RF coils by using this BASIC computer program.
RADIO-ELECTRONICS Nov 1988 (v.59#11) pg. 67
Added Info RADIO-ELECTRONICS Feb 1989 (v.60#2) pg. 14

Coil design program written in BASIC. Calculates coil inductance and determines the value (in microhenrys) of a coil after the necessary information is input.
SCIENCE & ELECTRONICS [2] May-Jun 1981 (v.21#3) pg. 54

Converting a typical iron-core choke into an air-core coil for crossovers.
SPEAKER BUILDER 1/1984 [Mar 1984] (v.5#1) pg. 34

A coil winder project. Description of two hand-powered winders for making coils. (1) Converted hand drill. (2) Heavy-duty coil winder utilizing a mandrel.
SPEAKER BUILDER 1/1987 [Jan 1987] (v.8#1) pg. 25
Added Info SPEAKER BUILDER 1/1988 [Jan 1988] (v.9#1) pg. 58
Added Info SPEAKER BUILDER 6/1992 [Dec 1992] (v.13#6) pg. 26

An electronic turns counter. Adapt a drill motor, sewing machine motor, or almost any series-wound universal motor to the task of winding your own coils. This circuit will count the number of revolutions of the motor and display the count on a digital LED display.
SPEAKER BUILDER 1/1988 [Jan 1988] (v.9#1) pg. 23

Technique to measure inductance (and approximate Q) of chokes used in passive crossovers. Includes a simple BASIC program to perform the needed computations.
SPEAKER BUILDER 6/1988 [Nov 1988] (v.9#6) pg. 43

Tip on using a calculator to count the number of turns when winding your own electronic coils.
SPEAKER BUILDER 6/1990 [Nov 1990] (v.11#6) pg. 93

Choosing the best filter coils for passive crossover filters.
SPEAKER BUILDER 4/1996 [Jul 1996] (v.17#4) pg. 22

Quality issues in iron-core coils for a passive crossover network. How to measure coil distortion as well as conduct an effective listening test.
SPEAKER BUILDER 6/1996 [Oct 1996] (v.17#6) pg. 44
Added Info SPEAKER BUILDER 1/1997 [Feb 1997] (v.18#1) pg. 50