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Type '''1482 Standard Inductor'''.
{{GR Product
|model=1482
|codes=
|class=Inductance Standards
|summary=Standard Inductor
|image=GR 1482-L Front.jpg
|caption=General Radio 1482 Series of Standard Inductors
|series=1482
|introduced=1954
|discontinued=1978+
|designers=
|manuals=
* '''Manual Needed.'''
{{Catalog History}}
}}
The {{Title|General Radio 1482 Series of Standard Inductors}} was introduced in {{Catalog N}} and remained available through {{Catalog 1978}}.
 
The Type 1482 series of inductance standards are designed to replace the Type [[106]] Standard Inductor. These new inductors are symmetrically wound toroid on a ceramic core.  The toroid is  hermetically sealed in a mixture of cork and silica gel then potted in an aluminum case.  The connections to the inductor are three Type [[938-A]] jack-top binding posts.  Two of the terminals for the inductor and the third is the case connection with shorting link, affording two or three terminal standards. Each inductor is supplied with a calibration certificate with corrections for 200 Hz, 500 Hz, and 1 kHz.
 
==Specifications==
==Specifications==
* '''Stability:''' inductance change is less than ±0.01% per year
* '''Temperature Coefficient of Inductance: a 1% increase in resistance, produced by a temperature increase of 2.54° C corresponds to 0.0076% increase in inductance
* '''Maximum Input Power:''' for 20° C rise, 3 watts; for precise work, 1.5° C rise, 200 milliwatts
* '''For all other secifications see table below'''
{| class="wikitable" style="margin:auto"
|+ Type 1482 Series of Standard Inductors
|-
! Type!! Nominal<br>Inductance !! Accuracy !! Resonant<br>Frequency !! DC<br>Resistance!! Q At<br>100 Hz !!Current rms<BR>for 200 mW!!Catalog<br>Number
|-
|  [[1482-A]] || 50 μH  ||±0.5%  || 3.1 MHz  || 0.039 Ω || 0.81  || 2.260 A  || 1482-9701
|-
|  [[1482-B]] || 100 μH ||±0.25% || 2.25 MHz || 0.083 Ω || 0.76  || 1.155 A  || 1482-9702
|-
|  [[1482-C]] || 200 μH ||±0.25% || 1.4 MHz  || 0.15 Ω  || 0.84  || 1.150 A  || 1482-9703
|-
|  [[1482-D]] || 500 μH ||±0.1%  || 960 kHz  || 0.38 Ω  || 0.83  || 725 mA  || 1482-9704
|-
|  [[1482-E]] || 1 mH  ||±0.1%  || 800 kHz  || 0.84 Ω  || 0.75  || 490 mA  || 1482-9705
|-
|  [[1482-F]] || 2 mH  ||±0.1%  || 580 kHz  || 1.52 Ω  || 0.83  || 360 mA  || 1482-9706
|-
|  [[1482-G]] || 5 mH  ||±0.1%  || 320 kHz  || 3.8 Ω  || 0.83  || 230 mA  || 1482-9707
|-
|  [[1482-H]] || 10 mH  ||±0.1%  || 220 kHz  || 8.2 Ω  || 0.77  || 156 mA  || 1482-9708
|-
|  [[1482-J]] || 20 mH  ||±0.1%  || 145 kHz  || 14.5 Ω  || 0.87  || 117 mA  || 1482-9710
|-
|  [[1482-K]] || 50 mH  ||±0.1%  || 84 kHz  || 36.8 Ω  || 0.85  || 74 mA    || 1482-9711
|-
|  [[1482-L]] || 100 mH ||±0.1%  || 71 kHz  || 81 Ω    || 0.78  || 50 mA    || 1482-9712
|-
|  [[1482-M]] || 200 mH ||±0.1%  || 39 kHz  || 109 Ω  || 1.15  || 43 mA    || 1482-9713
|-
|  [[1482-N]] || 500 mH ||±0.1%  || 24.5 kHz || 280 Ω  || 1.12  || 27 mA    || 1482-9714
|-
|  [[1482-P]] || 1 H    ||±0.1%  || 14.6 kHz || 616 Ω  || 1.02  || 18 mA    || 1482-9716
|-
|  [[1482-Q]] || 2 H    ||±0.1%  || 10.6 kHz || 1125 Ω  || 1.12  || 13.3 mA  || 1482-9717
|-
|  [[1482-R]] || 5 H    ||±0.1%  || 6.8 kHz  || 2920 Ω  || 1.08  || 8.3 mA  || 1482-9718
|-
|  [[1482-T]] || 10 H  ||±0.1%  || 4.9 kHz  || 6400 Ω  || 0.98  || 5.6 mA  || 1482-9720
|-
|}


==Links==
==Links==


* [[Media:GR Exp 1482 11_1952.pdf|Experimenter November 1952 describing Type 1482 Series]]


==Photos==
==Photos==
<gallery>
<gallery>
GR 1482-L Front.jpg
GR 1482 Side.jpg
GR 1482 Side A.jpg
GR 1482 Bottom.jpg
</gallery>
</gallery>


[[Category:Inductance Standards]]
[[Category:Inductance Standards]]

Latest revision as of 02:43, 1 August 2024

General Radio 1482
Standard Inductor
General Radio 1482 Series of Standard Inductors

Available from 1954 to 1978+

Manuals
  • Manual Needed.
Catalog History
 Document Year Page
Catalog N 1954 60
Catalog O 1956 162
Catalog P 1959 176
Catalog Q 1961 174
Catalog R 1963 163
Catalog S 1965 206
Catalog T 1968 102
Catalog U 1970 132
Catalog73 1973 197
Catalog78 1978 87
(All manuals in PDF format unless noted otherwise)

The General Radio 1482 Series of Standard Inductors was introduced in Catalog N (1954) and remained available through Catalog 1978.

The Type 1482 series of inductance standards are designed to replace the Type 106 Standard Inductor. These new inductors are symmetrically wound toroid on a ceramic core. The toroid is hermetically sealed in a mixture of cork and silica gel then potted in an aluminum case. The connections to the inductor are three Type 938-A jack-top binding posts. Two of the terminals for the inductor and the third is the case connection with shorting link, affording two or three terminal standards. Each inductor is supplied with a calibration certificate with corrections for 200 Hz, 500 Hz, and 1 kHz.

Specifications

  • Stability: inductance change is less than ±0.01% per year
  • Temperature Coefficient of Inductance: a 1% increase in resistance, produced by a temperature increase of 2.54° C corresponds to 0.0076% increase in inductance
  • Maximum Input Power: for 20° C rise, 3 watts; for precise work, 1.5° C rise, 200 milliwatts
  • For all other secifications see table below
Type 1482 Series of Standard Inductors
Type Nominal
Inductance		 Accuracy Resonant
Frequency		 DC
Resistance		 Q At
100 Hz		 Current rms
for 200 mW		 Catalog
Number
1482-A 50 μH ±0.5% 3.1 MHz 0.039 Ω 0.81 2.260 A 1482-9701
1482-B 100 μH ±0.25% 2.25 MHz 0.083 Ω 0.76 1.155 A 1482-9702
1482-C 200 μH ±0.25% 1.4 MHz 0.15 Ω 0.84 1.150 A 1482-9703
1482-D 500 μH ±0.1% 960 kHz 0.38 Ω 0.83 725 mA 1482-9704
1482-E 1 mH ±0.1% 800 kHz 0.84 Ω 0.75 490 mA 1482-9705
1482-F 2 mH ±0.1% 580 kHz 1.52 Ω 0.83 360 mA 1482-9706
1482-G 5 mH ±0.1% 320 kHz 3.8 Ω 0.83 230 mA 1482-9707
1482-H 10 mH ±0.1% 220 kHz 8.2 Ω 0.77 156 mA 1482-9708
1482-J 20 mH ±0.1% 145 kHz 14.5 Ω 0.87 117 mA 1482-9710
1482-K 50 mH ±0.1% 84 kHz 36.8 Ω 0.85 74 mA 1482-9711
1482-L 100 mH ±0.1% 71 kHz 81 Ω 0.78 50 mA 1482-9712
1482-M 200 mH ±0.1% 39 kHz 109 Ω 1.15 43 mA 1482-9713
1482-N 500 mH ±0.1% 24.5 kHz 280 Ω 1.12 27 mA 1482-9714
1482-P 1 H ±0.1% 14.6 kHz 616 Ω 1.02 18 mA 1482-9716
1482-Q 2 H ±0.1% 10.6 kHz 1125 Ω 1.12 13.3 mA 1482-9717
1482-R 5 H ±0.1% 6.8 kHz 2920 Ω 1.08 8.3 mA 1482-9718
1482-T 10 H ±0.1% 4.9 kHz 6400 Ω 0.98 5.6 mA 1482-9720

Links

Photos

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