basic

THE ELECTRON THEORY	The nucleus, Electron attraction, Positive and negative, Conductors, Isolators, Electromotive force, Coulomb, Amperes and milliamperes, Resistance, Ohms and megohms, Voltage
OHM'S LAW AND THE RESISTOR	Current flow, Ohm's law, using Ohm's law, Fixed and variable resistors, Carbon and wire wound resistors, Rheostats and potentiometers, The volume control, Why resistance is important, Voltage division, Heat and power, Wattage
WHAT IS INDUCTION?	Electron motion, Magnetic field, Left-hand rule, The inductor, Magnetic lines of force, Magnetism induces current, Self-induction, Bucking voltage, Inductance, The henry, Inductors and chokes
CAPACITANCE	Capacitors, Stray capacitance, Charge, Dielectric, Charge storage, Farad, Dielectric constant, Leakage, Power factor, Capacitor construction
HOW CAPACITANCE ARE MADE	Interleaved plates, Variable air capacitor, Mica capacitors, The silvered mica, Paper capacitors, Oil-filled types, Electrolyics, Oxide film, The dry electrolytic, Etched foil, Fabricated-plate electrolytics, Polarization, Ceramic capacitors, Temperature coefficient
REACTANCE, IMPEDANCE AND PHASE	The tuned circuit, Phase : leading and lagging, In phase, Phase shift, Rate of change of current, Induced e.m.f, Capacitive reactance, Inductive reactance, Equivalent resistance, Impedance
RESONANT CIRCUITS	Series- and parallel-tuned circuits, Resonant frequency, Figure of merit or "Q", Parallel circuits, Tuned-circuit loading, Wave traps, Tuning resonant circuits, Inductive and capacitive tuning
TRANSFORMERS-HOW THEY WORK	High voltage or high current, Primary coil, Secondary coil, Cores, Air core, Transformation ratios, Turns ratio, Magnetic flux, Lenz's law, Magnetizing current, Hysteresis and eddy-current losses, Magnetic inertia, Laminated cores, Transformer applications and troubles
THE DIODE VACUUM TUBE	Experimental setup, Plate (anode), Filament, A-and B-batteries. Kinetic energy, Electron emission, Indirectly heated cathode, Plate current, Saturation current, Diodes, Gassey tubes, Weak, noisy and microphonic tubes
TRIODE AND TETRODE TUBES	Coated filaments, Thorium, Filament temperature, Space charge, Mercury vapor, Enter the triode, Control grid, Bias, Electrode arrangement, Amplification factor, Plate-load resistor, Coupling capacitor, The screen grid, The tetrode, Circuit of a tetrode amplifier
THE PENTODE VACUUM TUBE	Secondary emission, Tetrode curve, The suppressor grid, Suppressor alters curve, The beam tube, Tube types, Hybrid tubes, Compactrons,
VACUUM-TUBE CHARACTERISTICS	The graph, Plotting curves, Test circuit, Plate-family curves, Transfer characteristic, Amplification factor, Plate resistance, Transconductance, Mutual conductance, Mho and micromho, Dynamic characteristics, Load line, Voltage gain
THE POWER SUPPLY	B-supply rectifiers, Half- and full-ware rectifiers, Smoothing filters, Choke-input filter, Capacitor-input filter, Power supply troubles
POWER SUPPLY TYPES	A.c.-d.c. supply, Ballast resistor, Transformerless heater string, Line-cord resistor, Typical a.c-d.c supply, Three-way supply, Voltage-doubler supply, Auto-radio supplies, Nonsynchronous vibrator power supply, Synchronous vibrator power supply, Transistor d.c-d.c converter
SOUND AND SPEAKERS	Brief review of sound. Compression and rarefaction of sound. Frequency. Pitch. Loudness. The dynamic speaker. Field coil. Spider. Frame. Permanent magnets. Sound and the ear. Low-note difficulties. Sound-pressure curve. Repair problems.
THE POWER OUTPUT STAGE	Voice-coil impedance. The output stage. Plate resistance. Conditions for maximum transfer of power. Output transformer. Turns ratio. Universal output transformer.
THE VOICE AMPLIFIER	Audio voltage amplifier. Distortion. Power. Voltage amplification verses load resistance. Phase inversion. Triode dynamic characteristics. Push-pull amplifier. Harmonics. Fundamental wave. Harmonic distortion.
DEMODULATING THE R.F.	Modulation. Detector or demodulator. R.F. carrier envelope. Demodulating the signal. Rectify the R.F. Simple crystal set. Crystal detector. Vacuum tube diode detector. Grid-leak detector. Power detector. R.F. choke.
RECEIVER SELECTIVITY	Getting better selectivity. Basic tuned-radio frequency (t.r.f) circuit. Cascaded R.F stages. Tuned-circuit frequency response. I.f. transformers. The superheterodyne. A converter tube. The intermediate frequency. Trimmer-tuned and slug-tuned transformers. Coupling. Critical coupling. How much bandwidth. Defects in the i.f. stage.
THE CONVERTER STAGE	Mixers. Beat frequencies. How a mixer works. Why detection? Triode mixer. The mixer tube. Image rejection. More sophisticated circuits. Pentagrid converter. Triode-hexode mixer circuit.
SOME OSCILLATOR CIRCUITS	Dampened oscillation. Driven oscillator. Vacuum-tube oscillator. Tickler coil. Circuit variations. Armstrong, Meissner, Hartley and Colpitts oscillators. Oscillator tracking. Padder capacitor.
HOW TO TRAP A SIGNAL	Snaring the signal. High-impedance loop antenna. . Loopstick. Directional properties. Improved loop antennas.
SIGNALS IN SPACE	Ground waves. Sky waves. The ionosphere layer. Fading. Automatic volume control. The detector circuit. Remote-cutoff tubes. Delayed a.v.c
TRANSISTOR RADIOS	How transistors are made. Electrons and holes as current carriers. N- and P-type material. Leakage. Breakdown or avalanche voltage. Semiconductor rectification. Inside the transistor. Transistors compared to vacuum tubes. Transistor receiver circuits. Printed circuits and service techniques.
SERVICING TECHNIQUES	Troubleshooting methods. Voltage measurement. Leaky capacitors. Open transformers. Service manuals. Resistance measurements. Circuit disturbance testing. Signal-injection testing. Signal-tracing method.
INSTRUMENTS AND TOOLS	A versatile instrument. V.o.m. Basic circuitry. V.t.v.m. Signal generator. Tube tester. Signal tracer. Other tools you need.