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General Radio Company 1633-A Other
Manufacturer:
Model:
1633-A
Date:
1962
Class:
Type:
SubType:
INCREMENTAL INDUCTANCE BRIDGE

Information

The Type 1633-A Incremental Inductance Bridge (Figure 1-1) is designed to measure inductors and resistors, both linear and nonlinear, over a wide range of ac and dc signal levels. Direct-reading measurements can be made over a broad frequency range. 1.2 DESCRIPTION. 1.2.1 GENERAL. The Type 1633-A Incremental Inductance Bridge includes a unique bridge circuit and a highly selective detector. It is direct reading in series inductance (Ls) and either series resistance (Rs) or storage factor (Q) at nine commonly used frequencies between 50 cps and 15.75 kc. It features single-knob controls for the measurement of L, R, or Q, and combines simplicity of operation with very high voltage- and current-handling capabilities. The signal losses in the bridge are small; thus the voltage and current through the unknown are nearly identical in both amplitude and waveform to the respective voltage and current applied at the Generator terminals. In many instances measurements can be made while the inductor is actually operating in its circuit.

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Service and User Manual
Manual type:
Service and User Manual
Pages:
47
Size:
9.66 Mbytes (10124404 Bytes)
Language:
english
Revision:
Manual-ID:
1633-0100-A
Date:
01 June 1962
Quality:
Scanned document, all readable.
Upload date:
30 December 2016
MD5:
e617120506f0d8339dd49b6c050da01c
Downloads:
486

Information

Section 1. INTRODUCTION ... 1 1.1 Purpose ... 1 1.2 Description ... 1 1.3 Symbols, Abbreviations, and Definitions ... 3 1.4 Series and Parallel Components ... 3 1.5 Accessories Supplied ... 4 1.6 Mounting ... 4 1.7 Type 1630 Inductance Measuring Assemblies ... 4 Section 2. OPERATING PROCEDURE ... 5 2.1 Installation ... 5 2.2 Use at Frequencies Indicated on Panel (Internal Detector). . 5 2.3 Use at Other Frequencies ... 7 2.4 Possible Sources of Error ... 7 Section 3. PRINCIPLES OF OPERATION ... 10 3.1 General. . ~ ... 10 3.2 Bridge Circuit ... 10 3.3 Isolation Amplifiers ... 11 3.4 Operational Amplifier ... 11 3.5 Standards ... 12 3.6 Internal Detector ... 12 3.7 Compensation Techniques ... 12 3.8 Protective Devices ... 13 Section 4. APPLICATIONS ... 14 4.1 Measurements of Iron-Cored Coils ... 14 4.2 AC Resistance Measurements ... 17 Section 5. SPECIAL MEASUREMENTS ... 18 5.1 General ... 18 5.2 Grounded Unknowns ... 18 5.3 Use with Higher Currents ... 18 5.4 Three-Terminal Measurements ... 18 5.5 Use with Nonsinusoidal Waveforms ... 19 5.6 Remote Measurements ... 19 5.7 Measurement of Mutual Inductance ... 19 5.8 Limit Testing ... 20 5.9 Use at Other Frequencies ... 20 5.10 Displaying AC Hysteresis Loops ... 21 Section 6. SERVICE AND MAINTENANCE ... 22 6.1 General ... 22 6.2 Noisy or Erratic Balances ... 22 6.3 Bridge Error at Low Frequencies ... 22 6.4 Bridge Will Not Balance ... 22 6.5 Calibration Procedure ... 24 7.1 General ... 24 7.2 Operating Procedure ... 24 7.3 Alternating Current in the DC Supply ... 24 7.4 Maximum Direct Current in the AC Supplies ... 24 7.5 Meter Readings ... 24 7.6 Possible Resonance of DC Supply Capacitor with Inductor Under Test ... 26

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