Bruce Rozenblit "Beginner's Guide to Tube Audio Design"

First Edition 1997 by Bruce Rozenblit
Audio Amateur Press Publishers, second printing 2001

INTRODUCTION (ix)
Equations. Ohm's Law. Connections.
CHAPTER 1: WHAT IS A VACUUM TUBE (3)
First Simplification: Electrons. Second Simplification: Fields & Electron Motion. Tube Parts. Tube as a Heat-Powered Engine. The Space Charge. Tube Construction - The Triode. Basic Tube Parameters. Impedance. Triode Parameters. Biasing. Tube Characteristics. Dynamic Plate Resistance. Transconductance. Amplification Factor. Tube Characteristic Charts. The Pentode. Pentode Characteristics. Tube Capacitance. Tube Specifications. Tube Life.
CHAPTER 2: SINGLE-STAGE BASICS (11)
Single-Stage Triode Amplifiers. Set the Bias. Gain Stage. Triode Models. Simple Algebra. Adding Cathode Resistor. Input Impedance. Output Impedance. Circuit Interfaces. Pentode Models. Summary.
CHAPTER 3: SIMPLE GAIN CIRCUITS (17)
Single-Stage Triodes. Fixing Output Impedance. Essential Parameters. Resistor Values. Getting Sufficient Gain. Single-Stage Pentodes. Compromises. Tweaky Stuff. Negative Feedback.
CHAPTER 4: NEGATIVE FEEDBACK (21)
Nonlinearity. Measuring Time in Degrees. Adding Sine Waves. feedback Circuits. Passive Networks. Decibels. Phase Change. Benefits of Feedback.
CHAPTER 5: SINGLE STAGE FEEDBACK CIRCUITS (27)
Direct-Coupled Cathode Follower. Negative Voltage Feedback. Gain. AC-Coupled Cathode Follower. Feedback in Single-Stage Gain Circuits. External Loop Conection.
CHAPTER 6: MULTISTAGE BASICS (31)
Amplifier-Circuit Types. Voltage and Power Amplifiers. Preliminary Questions. Parameters. Reducing Distortion. Low-Frequency Instability. High-Frequency Instability. Optimization. Push-Pull Circuits. Continuous Exchange. Balanced Circuitry. High-Frequency Compensation.
CHAPTER 7: AMPLIFIER PARTS (35)
Phase Splitters. Phase-Splitter Design. Phase-Splitter Variation. Setting Design Parameters. Differential Amplifier. Negative Power Supply. Constant Current Source. Other Constant-Current Source Benefits. Constant-Current Source Outputs. The Cascode. Circuit Model and Equations.
CHAPTER 8: OUTPUT STAGES AND TRANSFORMERS (43)
Transformers. Electromagnetism. Magnetic Induction. Current Relationship. Internal Impedance. Transformer Windings. Bifilar Windings. Current Flow. Plate Voltage. Modes of Operation. Bias Mechanisms. Single-Ended Operation. Output-Tube Types. Full-Power Rating. Peak Voltage. Impedance and Power Specs. Screen Grids. triode Operation. Ultralinear Stage. Phase Shift.
CHAPTER 9: POWER SUPPLIES AND VOLTAGE REGULATORS (51)
Power and Work. Voltage as Potential Energy. Voltage Stability and Regulation. Power-Supply Design. Regulation. Rectification. Full-Wave Bridge. Filter Capacitor. Ripple. Conduction Angle. Reducing Ripple. Filter Choke. Voltage Doubler. Rectifier Characteristics. Vacuum-Tube Rectifiers. Power Transformers. Filament Power Supply. Voltage Regulations. Gas Tubes. zener Diodes. Series-Pass Regulators. Single-Stage Three-terminal regulator.
CHAPTER 10: STABILITY NETWORKS (59)
Poles. Test circuit. Checking Input Stability. Open-Loop Stabilization. Low-Frequency Instability. Spacing Poles. Closing the Feedback Loop. Applying Compensation Networks. Checking Phase Relationships. Make Notes. Feedback Concerns; Stability Margin.
CHAPTER 11: CLASSIC DESIGNS (63)
Learning from te Past. Jafferson 2A3. Amplifier Sections. Williamson Amplifier. Leak RC/PA/U. Fisher 50-AZ. Grommes 260A. Dynaco Mark III. Heathkit W-6M. McIntosh MC-60. Marantz Model 5. Grommes Model 212. Dynaco PAS-2.
CHAPTER 12: PRACTICAL CONSIDERATIONS (79)
Test Equipment. Assembly Procedures. Equipment Tips. Component Placement. Choosing Capacitors. Choosing Tubes. Conclusion.
PROJECTS (82)
A Line Level Preamp. A Transformerless Output Amplifier. Test Bench Supply.
BIBLIOGRAPHY (100)
INDEX (102)

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