The General Radio 1482-G is a highly stable, primary-standard inductor with a nominal value of 5 mH, designed for use as a laboratory reference standard.

Specifications

General

ParameterValue
Interfaces3-terminal binding posts

Physical

ParameterValue
Power SupplyPassive (none required)
Dimensions (W×H×D)165 x 165 x 223 mm
Weight5.3

Electrical Specifications

ParameterValue
Nominal Inductance Value5 mH
Calibration Accuracy±0.02% at 1 kHz
Initial Adjustment Tolerance±0.5%
Reference Calibration Frequency100 Hz, 400 Hz, 1 kHz
DC Resistance4.8 Ω
Maximum Continuous AC Current550 mA
Maximum Power Dissipation3 W (for 40 °C temperature rise)
Typical Q at 1 kHz6.6

Precision and Stability

ParameterValue
Long-term Inductance Stability±0.01% per year
Temperature Coefficient of Inductance (TCI)+30 ppm/°C (between 20°C and 40°C)
Temperature Coefficient of Resistance (TCR)approx. +0.39%/°C

Connections and Terminals

ParameterValue
Terminal Configuration3-terminal
Terminal Connector TypeGenRad 938 Binding Posts

Physical and Mechanical Properties

ParameterValue
Internal Potting/Insulation MaterialGround cork and petrolatum mixture
Enclosure MaterialAluminum
Form Factor / Mounting StyleBenchtop

Electrical Characteristics

ParameterValue
Resonant Frequency340 kHz
Shunt Capacitance44 pF

Calibration & Metrology

ParameterValue
Calibration Temperature23 °C

Calibration

ParameterValue
Calibration TraceabilityTraceable to NIST

Technology

Toroidal wound on ceramic core

Applications

Laboratory Inductance Standard

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