Servicing Radio Television with a Vacuum Tube Voltmeter * CDROM * PDF

Description

Servicing
Radio and Television with a Vacuum Tube Voltmeter
48
Pages in
Adobe PDF
format on CDROM
Sylvania Electric Products (1951)
TABLE OF CONTENTS
CHAPTER 1. THE VACUUM TUBE VOLTMETER.
1.1 Diode Type.
1.2 Triode Type.
1.3 Zero Setting.
1.4 Range Switching.
1.5 Polarity Switching.
1.6 Balanced Triode Pushpull Circuit.
1.7 Modes of Operation of Triode Vacuum-Tube Voltmeters.
1.8 Rectifier-Amplifier Instrument.
1.9 Vacuum-Tube Ohmmeter.
1.10 Advantages of the Modem Vacuum-Tube Voltmeter.
1.11 The Sylvania Polymeter Type 221Z.
1.12 Rules for Use of the Vacuum-Tube Test Meter.
CHAPTER 2. RADIO RECEIVER TESTS AND MEASUREMENTS.
2.1 DC Voltage Measurements in a Typical AM Superheterodyne.
2.2 AC Voltage Measurements in the Receiver.
2.3 Signal Level Measurements.
2.4 Dynamic Signal Tracing.
2.5 Power Output Measurement.
2.6 Discriminator and Ratio Detector Alignment in FM Receivers.
2.7 Bandwidth (Selectivity) Measurements.
2.8 AVC Checking.
2.9 AFC Checking.
2.10 Use of the Vacuum-Tube Voltmeter in Receiver Alignment.
2.11 Peak Voltage Measurement in the Power Supply.
2.12 Checking Oscillator Activity.
2.13 HighFidelity AM Receiver Alignment.
CHAPTER 3. AUDIO AMPLIFIER TESTS AND MEASUREMENTS.
3.1 DC Voltage Measurements in Audio Amplifiers.
3.2 AC Voltage Measurements in Audio Amplifiers.
3.3 Signal Level Measurements in Audio Amplifiers.
3.4 Tone Control Tests.
3.5 Fidelity Tests.
3.6 Gain Tests.
3.7 Hum Level Measurements.
3.8 Noise Level Measurements.
3.9 Power Output Measurement.
3.10 Signal Tracing in Audio Amplifiers.
3.11 Distortion Measurement.
3.12 Loudspeaker Matching.
3.13 Scratch or Whistle Filter Adjustment.
CHAPTER 4. TELEVISION RECEIVER TESTS.
4.1 Low-Level AC and DC Voltage Measurements.
4.2 High Voltage Measurements.
4.3 Measurement of Oscillator Strength.
4.4 Bandwidth Measurement.
4.5 Checking Wavetrap Operation.
4.6 Sound Channel Tests and Alignment.
4.7 Checking Picture Signal Voltage.
4.8 Measuring Deflecting Voltage.
4.9 Signal Tracing in a Television Receiver.
4.10 Checking Television RF Power Supplies.
CHAPTER 5. MISCELLANEOUS APPLICATIONS.
5.1 Power Supply Ripple.
5.2 Power Supply Peak Voltages.
5.3 Vibrator Peak Voltages.
5.4 Impedance Checking.
5.5 Calibration of Oscilloscope Screen.
5.6 Checking Wave Filters.
5.7 Capacitor Checking.
5.8 Inductance Checking.
5.9 Use of Vacuum-Tube Voltmeter as a Bridge Null Detector.
5.10 Detecting Gassy Tubes.
5.11 Detecting Leaky Coupling Capacitors.
5.12 Direct Current Measurements.
5.13 Measuring Very-High Resistances.
5.14 Checking Bias Cells.
5.15 Measurement of Turns Ratio.5.16 QMeasurement.
5.17 Vacuum-Tube Voltmeter as Comparison Voltmeter.
5.18 Photoelectric Tests.
5.19 Checking Rectification Efficiency of Diodes.
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