ARTICLES / PROJECTS

2008 The Amazing FET Circlotron Contruction, Construction Cont., Cad Files by Michael Rothacher
2008 B1 Buffer Preamp by Nelson Pass
2008 Leaving Class A by Nelson Pass

2006 Zen Variations 9 by Nelson Pass

2005 The PLH Amplifier: The classic JLH - Pass style by Nelson Pass

2005 Zen Variations 8: The Power JFET Amplifier by Nelson Pass

2004 Current Source Amplifiers and Sensitive Full-Range Drivers by Nelson Pass


2004 Current Source Crossover Filters by Nelson Pass


2004 The KleinHorn Part 1 and Part 2 by Nelson Pass

2004 Zen Variations 7: More Son of Zen and SuperSymmetry by Nelson Pass

2004 Zen Variations 6: Son of Zen gets Xploited by Nelson Pass

2004 Soldering Tips by Karen Douglass
2003 Zen Variations 5: Complementary Zen (Hi Res) or (Low Res) by Nelson Pass

2003 The J-Low and the Assemply Document by Nelson Pass and Dana Kruse

2003 Mosfet Testing by Nelson Pass


2002 The Legend of EL PIPE-O by Kent English & Nelson Pass

2002 Ground Loops by Kent English


2002 Like Peanut Butter and Chocolate by Nelson Pass


2002 Trouble Shooting by Kent English


2002 Zen Variations 4: The Penultimate Zen and the Gerber files by Nelson Pass

2002 Zen Variations 3: Active Supply Regulation by Nelson Pass

2002 Zen Variations 2: The Penultimate Zen's Current Source by Nelson Pass

2001 Zen Variations 1: Zen-lightenment by Nelson Pass

2001 The Pearl Phono and Gerber Files + Self Extracting ZIP by Wayne Colburn

2001 Power Supplies by Nelson Pass

2000 A40 Part Substitutions by Nelson Pass

1998 D.I.Y. Op Amps by Nelson Pass

1998 Super-Symmetric Amplification by Nelson Pass


1997 Balanced Zen Line Stage (BOSOZ) and Gerber Files by Nelson Pass
1997 Son of Zen by Nelson Pass

1995 Single Ended Class A by Nelson Pass

1994 Bride of Zen by Nelson Pass

1994 Zen Amplifier Revisited by Nelson Pass

1994 The Zen Amplifier by Nelson Pass

1993 Matching Devices by Nelson Pass


1992 A75 Part 1 and Part 2 by Norman Thagard & Nelson Pass

1982 Phase-Coherent Crossover Networks by Nelson Pass

1981 Build a MOSFET Citation 12 by Nelson Pass

1980 Speaker Cables: Science or Snake Oil? by Nelson Pass

1978 Cascode Amplifier Design by Nelson Pass

1978 The Pass A-40 Power Amplifier by Nelson Pass

1977 Construct A Class-A Amplifier by Nelson Pass

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Index

The JLH Class-A Articles

The Original Article - Wireless World April 1969

Oscilloscope Traces & Photographs from the 1969 Article

Letter to the editor - Wireless World October 1969

The Postscript - Wireless World December 1970

The Update - Electronics World September 1996

A Little Reminiscing - Electronics World May 2000

Power Supplies for the JLH Class-A

Additional Information for the JLH Class-A

JLH Class-A - Single-ended or Push-pull?

JLH Class-A Update

A JLH Class-A for the Quad ESL57

Transistor Substitutes

D C Voltages (for testing / fault-finding)

Earthing

Constructors’ Comments – Sound Quality

Contributed Articles

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