The Class-A Amplifier Site
This page was last updated on 26 September 2009
The Published Articles of John Linsley Hood
Following the sad news regarding the death of Mr J L Linsley HoodMIEE on 11/3/2004, I thought that a comprehensive index of his published works would be a fitting addition to this website. I have therefore compiled the following list from my own archive of magazine articles, an on-line index of more recent Electronics World articles, web searches and input from various helpful people around the world.
A link for those who prefer their lists to be sorted by category.
Articles
| Title | Publication | Issue / Page |
| Simple Class A Amplifier | WW | Apr '69 p148 |
| Transistor Distortion Characteristics | WW | Nov '69 p528 |
| Modular Preamplifier Design | WW | Jul '69 p306 |
| Simple Class AB Amplifier (letter to Editor) | WW | Feb '70 p74 |
| Combined Low-Pass and High-Pass Filter ('Circuit Ideas') | WW | Mar '70 p123 |
| Simple Audio Preamp | WW | May '70 p207 |
| Class Distinction in Audio Amplifiers | WW | Jun '70 p278 |
| 15-20W Class AB Audio Amplifier | WW | Jul '70 p321 |
| Simple Class A Amplifier and Modular Preamp - Postscript | WW | Dec '70 p607 |
| How Important is the Audio Amplifier Part 1 - Loudspeakers and PowerAmplifiers | TG | Jan '71 p1236 |
| How Important is the Audio Amplifier Part 2 - Pre-amplifiers and TonalQuality | TG | Feb '71 p1380 |
| How Important is the Audio Amplifier Part 3 - Filters and Power Supplies | TG | Mar '71 p1538 |
| The Liniac | WW | Sep '71 p437 |
| Sound Pressure-Level Meter | WW | Apr '72 p167 |
| Simple Electronic Multimeter | WW | Jun '72 p279 |
| Portable Distortion Monitor | WW | Jul '72 p306 |
| A Direct-Coupled High Quality Stereo Amplifier Part 1 | HFN&RR | Nov '72 p2120 |
| A Direct-Coupled High Quality Stereo Amplifier Part 2 | HFN&RR | Dec '72 p2280 |
| A Direct-Coupled High Quality Stereo Amplifier Part 3 | HFN&RR | Jan '73 p60 |
| A Direct-Coupled High Quality Stereo Amplifier Part 4 | HFN&RR | Feb '73 p290 |
| A Direct-Coupled High Quality Stereo Amplifier - Afterthoughts andAdditions | HFN&RR | May '73 p939 |
| Linear Voltage Controlled Oscillator | WW | Nov '73 p567 |
| High-Quality DC Coupled Amplifier - A Retrospective Look: Practical Construction & Kit Considerations | HFN&RR | Apr '74 p75 |
| Twin Voltage Stabilised Power Supply | WW | Jan '75 p43 |
| Equipping an Amateur Hi-Fi Workshop Part 1 - Introduction | HFN&RR | Jan '75 p103 |
| Equipping an Amateur Hi-Fi Workshop Part 2 - A Low Distortion Sine-Wave and Square Wave Oscillator | HFN&RR | Mar '75 p63 |
| Equipping an Amateur Hi-Fi Workshop Part 3 - A Wide Range, High Input Impedance Millivoltmeter | HFN&RR | Apr '75 p64 |
| ? Power Amplifier | SS | Apr '75 p22 |
| Equipping an Amateur Hi-Fi Workshop Part 4 - A Sensitive Spot-Frequency Distortion Meter | HFN&RR | Jun '75 p51 |
| Amplifier Technology | ETI | Jun '75 p16 |
| Equipping an Amateur Hi-Fi Workshop Part 5 - An F.M. Oscillator and 'Wobbulator' | HFN&RR | Jul '75 p55 |
| Equipping an Amateur Hi-Fi Workshop Part 6 - A Short-Circuit Protected, Stabilised, Bench Power Supply | HFN&RR | Aug '75 p42 |
| One-Shot Timer Circuit | WW | Nov '75 p520 |
| Equipping an Amateur Hi-Fi Workshop - Afterthoughts, Errors and Omissions | HFN&RR | Mar '76 p67 |
| Low-Noise, Low-Cost Cassette Recorder Part 1 | WW | May '76 p36 |
| The Shape of Amplifiers to Come Part 1 | HFN&RR | May '76 p77 |
| Low-Noise, Low-Cost Cassette Recorder - Part 2 | WW | Jun '76 p62 |
| The Shape of Amplifiers to Come Part 2 | HFN&RR | Jun '76 p67 |
| Square-Wave Generator with Single Frequency Adjustment Resistor | WW | Jul '76 p36 |
| The Shape of Amplifiers to Come Part 3 | HFN&RR | Jul '76 p62 |
| The “H” or “Bootstrap” LF Circuit Filter | EE | Jul '76 p55 |
| Low-Noise, Low-Cost Cassette Recorder - Part 3 | WW | Aug '76 p55 |
| Low Distortion Oscillator Part 1 | WW | Sep '77 p40 |
| Low Distortion Oscillator Part 2 | WW | Oct '77 p69 |
| Low-Noise, Low-Cost Cassette Recorder - Postscript | WW | Feb '78 p35 |
| High Quality Headphone Amp | HFN&RR | Jan '79 p81 |
| A Reference Standard RIAA Preamplifier | HFN&RR | Feb '79 p70 |
| Spot-Frequency Distortion Meter | WW | Jul '79 p62 |
| Linear Voltage-Controlled Oscillator | WW | Sep '79 p87 |
| A Simple 30 Watt Integrated Amplifier Part 1 | HFN&RR | Jan '80 p67 |
| A Simple 30 Watt Integrated Amplifier Part 2 | HFN&RR | Feb '80 p61 |
| A Simple 30 Watt Integrated Amplifier Part 3 | HFN&RR | Mar '80 p45 |
| A Simple 30 Watt Integrated Amplifier - Errors | HFN&RR | Jun '80 p55 |
| Modular Pre-amp | ETI | Jun '80 p?? |
| Modular Pre-amp | ETI | Sep '80 p?? |
| Build a Peak Drive Indicator | HFN&RR | Oct '80 p63 |
| An Introduction to Power MOSFETs | HFN&RR | Dec '80 p83 |
| Wien-Bridge Oscillator with Low Harmonic Distortion | WW | May '81 p51 |
| Integrated Circuit Design | WW | Oct '81 p43 |
| LM109 Three Terminal Voltage Regulator | WW | Mar '82 p41 |
| 555-Type Integrated Circuits | WW | Apr '82 p41 |
| 80-100 Watt MOSFET Audio Amplifier Part 1 | WW | Jun '82 p40 |
| 80-100 Watt MOSFET Audio Amplifier Part 2 | WW | Jul '82 p63 |
| 80-100 Watt MOSFET Audio Amplifier Part 3 | WW | Aug '82 p28 |
| Third-Generation Op-amps | WW | Sep '82 p80 |
| Distortion On & Off the Record | HFN&RR | Oct '82 p59 |
| Modular Preamplifier Part 1 | WW | Oct '82 p32 |
| Modular Preamplifier Part 2 | WW | Nov '82 p60 |
| Modular Preamplifier Part 3 | WW | Jan '83 p46 |
| Modular Preamplifier Part 4 | WW | Feb '83 p79 |
| Stabilised Hi-Fi PSU | ETI | May '83 p18 |
| Audio Design Part 1 | ETI | Sep '83 p21 |
| Audio Design Part 2 - IC's in Audio | ETI | Oct '83 p28 |
| Strain-gauge Weighing Scale | WW | Oct '83 p26 |
| Audio Design Part 3 - Distortion and Noise | ETI | Nov '83 p26 |
| Audio Design - Moving Coil PU Head Amp | ETI | Nov '83 p31 |
| Audio Design Part 4 - RIAA / Tone Controls | ETI | Dec '83 p37 |
| Audio Design Part 5 - Power Amplifier Design | ETI | Jan '84 p42 |
| Audio Design Part 6 - Audio Recording | ETI | Feb '84 p56 |
| Active Filter Calculations | WW | Feb '84 p52 |
| Audio Design Part 7 - Imaginary Numbers | ETI | Mar '84 p58 |
| Audio Design Amplifier Part 1 - Design Criteria and Pre-Amp | ETI | Jun '84 p24 * |
| Audio Design Amplifier Part 2 - MOSFET Power Amp | ETI | Jul '84 p44 * |
| Audio Design Amplifier Part 3 - PSU and Power Meter | ETI | Aug '84 p30 * |
| Audio Design Amplifier Part 4 - Final Description and Corrections | ETI | Sep '84 p59 * |
| Direct Reading Capacitance Meter | ETI | Nov '84 p41 |
| Symmetry in Audio Amplifier Circuitry | E&WW | Jan '85 p31 |
| Distortion Meter Part 1 - Basic Criteria and Design Principals | ETI | Jan '85 p55 |
| Distortion Meter Part 2 - Circuit Description | ETI | Feb '85 p37 |
| Distortion Meter Part 3 - Instrument Use | ETI | Mar '85 p43 |
| The Real Components Part 1 - Resistors and Capacitors | ETI | Mar '85 p29 |
| The Real Components Part 2 | ETI | Apr '85 p?? |
| The Real Components Part 3 | ETI | May '85 p?? |
| Automatic Enlarger Timer | E&WW | May '85 p45 |
| The Real Components Part 4 - Transistor Parameters and Design Calculations | ETI | Jun '85 p25 |
| Designer's Notebook - Power Amp Design | ETI | Jun '85 p42 |
| Low Cost Audio Mixer | ETI | Jun '85 p38 |
| The Real Components Part 5 - Diodes | ETI | Jul '85 p18 |
| A.C. Mains Power Controller | E&WW | Jul '85 p53 |
| The Real Components Part 6 | ETI | Aug '85 p18 |
| The Real Components Part 7 - Power Switching Devices | ETI | Sep '85 p26 |
| The Real Components Part 8 - Digital Logic ICs | ETI | Oct '85 p20 |
| Audio Design Amplifier - Errata | ETI | Oct '85 p58 |
| The Sound or the Music | TG | Oct '85 p558 |
| Synchrodyne a.m. Receiver Part 1 | E&WW | Jan '86 p51 |
| Synchrodyne a.m. Receiver Part 2 | E&WW | Feb '86 p53 |
| Synchrodyne a.m. Receiver Part 3 | E&WW | Mar '86 p58 |
| Power Supply for PA Amplifier | ETI | Apr '86 p19 |
| PA Amplifier | ETI | May '86 p43 |
| An Engineer's Log-Moisture Measurement | E&WW | Jul '86 p24 |
| Putting the Quality back into A.M. Radio | E&WW | Oct '86 p16 |
| Electronic Ignition for Single Cylinder Engines; capacitor discharge unit replaces magneto ignition to give new life to garden machinery $ | E&WW | Oct '86 p65 |
| PLL FM Tuner Part 1 - Low Distortion Stereo Decoder | ETI | Feb '87 p46 |
| PLL FM Tuner Part 2 | ETI | Mar '87 p34 |
| PLL FM Tuner Part 3 - Construction and Setting Up | ETI | Apr '87 p33 |
| A Present for Granny (a hearing aid design) | ETI | ??? '89 p?? |
| A/AB MOSFET Power Amplifier | E&WW | Mar '89 p261 |
| Dual-Output Twin Rail Power Supply | E&WW | May '89 p524 |
| ? MOSFET Power Amp | ETI | May '89 p25 |
| Valve - A High Quality 25-30W Audio Amplifier | ETI | Aug '89 p21 |
| And Then There Were Transistors Part 1 | ETI | Sep '89 p14 |
| And Then There Were Transistors Part 2 | ETI | Oct '89 p24 |
| DIY Design | TG | Nov '89 p1023 |
| Solid State Audio Power Part 1 | E&WW | Nov '89 p1042 |
| Solid State Audio Power Part 2 | E&WW | Dec '89 p1164 |
| Solid State Audio Power Part 3 | E&WW | Jan '90 p16 |
| Elements of Radio Part 1 | ETI | Mar '90 p25 |
| Elements of Radio Part 2 | ETI | Apr '90 p33 |
| Elements of Radio Part 3 | ETI | May '90 p17 |
| Endstufenschaltungen unter der Lupe Part 1 # | ELRAD | May '90 p50 |
| Endstufenschaltungen unter der Lupe Part 2 # | ELRAD | Jun '90 p87 |
| Endstufenschaltungen unter der Lupe Part 3 # | ELRAD | Jul '90 p90 |
| Audio Preamplifier Design Part 1 | E&WW | Jun '90 p505 |
| Audio Preamplifier Design Part 2 | E&WW | Jul '90 p634 |
| Audio Preamplifier Design Part 3 | E&WW | Aug '90 p690 |
| The How and Why of DIY Part 1 - Phono Cartridge Equalization | TG | Nov '90 p1103 |
| Vorverstaerker-Design: Entwicklungskriterien fuer Audio-Vorstufen Part 1 # | ELRAD | Dec '90 p48 |
| Vorverstaerker-Design: Entwicklungskriterien fuer Audio-Vorstufen Part 2 # | ELRAD | Jan '91 p51 |
| Vorverstaerker-Design: Entwicklungskriterien fuer Audio-Vorstufen Part 3 # | ELRAD | Feb '91 p81 |
| FM Radio: Playing a Better Tune Part 1 | E&WW | Mar '91 p216 |
| FM Radio: Playing a Better Tune Part 2 | E&WW | Apr '91 p345 |
| FM Radio: Playing a Better Tune Part 3 | E&WW | May '91 p408 |
| Supercomponents | ETI | Jun '91 p?? |
| The How and Why of DIY Part 2 - A Simple Mains Derived Power Supply | TG | Aug '91 p105 |
| Transistor Driven Valve Amplifier | E&WW | Aug '91 p676 |
| Active Filters | E&WW | Oct '91 p812 |
| A High Quality Modular Preamplifier Part 1 - Basic Philosophy | ETI | Apr '92 p16 |
| A High Quality Modular Preamplifier Part 2 - Construction | ETI | May '92 p?? |
| IGBT Audio Amplifier | E&WW | May '92 p413 |
| Low Noise Systems | ETI | Jul '92 p42 |
| The How and Why of DIY Part 3 - A Simple Class-A Headphone Amplifier | TG | Oct '92 p225 |
| Integrated Audio Amplifier | E&WW | Jun '93 p454 |
| Audio Amplifier Design: Engineering or Alchemy? Part 1 | EPE | Aug '93 p596 |
| Audio Amplifier Design: Engineering or Alchemy? Part 2 | EPE | Sep '93 p666 |
| Audio Amplifier Design: Engineering or Alchemy? Part 3 | EPE | Oct '93 p748 |
| Power Supplies for Electronic Equipment Part 1 - Batteries | ETI | Mar '94 p48 |
| Power Supplies for Electronic Equipment Part 2 - Shunt and Series Designs | ETI | Apr '94 p21 |
| The Evolution of Audio Amplifier Design Part 1 - The early valve years | EIA | Feb '94 p22 |
| The Evolution of Audio Amplifier Design Part 2 - The dawn of a new era - transistor audio amps. | EIA | Mar '94 p31 |
| The Evolution of Audio Amplifier Design Part 3 - Transistor 'Hi-Fi' and the great quasi-complementary swindle | EIA | Apr '94 p29 |
| The Evolution of Audio Amplifier Design Part 4 - True Hi-Fi at last? | EIA | May '94 p30 |
| The Evolution of Audio Amplifier Design Part 5 - Modern solid-state designs | EIA | Jun '94 p20 |
| Low Distortion Attenuator for Hi-Fi | E&WW | Apr '95 p320 |
| Expert Witness - BJT v MOSFET | E&WW | Aug '95 p684 |
| Controlling Audio Dynamic Range | E&WW | Nov '95 p938 |
| Low Distortion Audio Oscillators | ETI | Jan '96 p34 |
| Single-Station Radio 4 Tuner | EPE | Jul '96 p520 |
| Class-A Power | EW | Sep '96 p681 |
| Low Distortion Audio Oscillators - 'Squarer' (Sine to Square Wave Converter) | ETI | Oct '96 p32 |
| Measure THD to 0.001% | EW | Feb '98 p104 |
| Gain Stage Investigations | EW | Jul '98 p578 |
| JLH - A Lifetime in Electronics Part 1 | EW | Mar '00 p218 |
| JLH - A Lifetime in Electronics Part 2 | EW | Apr '00 p325 |
| JLH - A Lifetime in Electronics Part 3 | EW | May '00 p417 |
| JLH - A Lifetime in Electronics Part 4 | EW | Jun '00 p480 |
| Simple Class A Amplifier (Reprint) | EW | Jun '04 p44 |
Key:
EE | Electronic Engineering |
EIA | Electronics in Action |
ELRAD | German magazine (Magazin für Elektronik und technische Rechneranwendung) |
EPE | Everyday Practical Electronics |
ETI | Electronics Today / Electronics Today International |
E&WW | Electronics & Wireless World |
EW | Electronics World |
HFN&RR | Hi-Fi News & Record Review |
SS | Studio Sound |
TG | The Gramophone |
WW | Wireless World |
* Reprinted in Electronics Digest Winter '85/'86
# Translated reprint of an article which appeared in E&WW six months earlier
$ Published under the pseudonym 'John Robins'
Books written by JLH
The Art of Linear Electronics | ISBN 0750608684 |
Valve and Transistor Audio Amplifiers | ISBN 0750633565 |
Audio Electronics | ISBN 0750643323 |
Audio and Hi-Fi Handbook (some chapters) |
|
Acknowledgements
I would particularly like to thank Jonathan Bright in Australia for his significant contributions to this index and for his on-going efforts in searching for more information and additions. Also, John Baker in the UK who has sent me details of many articles published in ETI.
My thanks also go to the following for sending me details of articles that I might otherwise have missed:
Graham Maynard, UK
Don Warr, Canada
George Scopel, South Africa
Steve Hopkins, New Zealand
Tony Fitchett, New Zealand
Dave Priestley, UK
Helmut Gragger, Austria
Alex Kethel, Australia
Bob Kenyon, UK
John Crichton, Australia
P Robertson
Graham Aberline
Rob Angell
Trevor Towers
HISTORY: Page created 02/04/2004
07/04/2004 Sorted by category page added
xx/xx/2004 Various articles added
xx/xx/2005 Various articles added
xx/xx/2006 Various articles added
xx/xx/2007 Various articles added
xx/xx/2009 Various updates