1481-A: Difference between revisions
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|class=inductance standards | |class=inductance standards | ||
|summary=1 mH, ±1% inductor | |summary=1 mH, ±1% inductor | ||
|image= | |image=GR 1481-A Front.jpg | ||
|caption=General Radio 1481-A | |caption=General Radio 1481-A Inductor | ||
|series=1481 | |series=1481 | ||
|introduced=1951 | |introduced=1951 | ||
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{{Catalog History}} | {{Catalog History}} | ||
}} | }} | ||
The {{Title|General Radio 1481-A | The {{Title|General Radio 1481-A Inductor}} was introduced in {{Catalog M}} and remained available through {{Catalog R}}. | ||
The Type 1481-A inductor is of the toroid wound, dust-core design. The toroid is clamped between the two aluminum case halves. The 1481-A inductor is derived from Types 940 and 1490 decade inductors. Each inductor is engraved with nominal inductance, accuracy, and inductance change versus current. The connections are Type [[938-B]] Jack-Top binding posts, one being grounded. | The Type 1481-A inductor is of the toroid wound, dust-core design. The toroid is clamped between the two aluminum case halves. The 1481-A inductor is derived from Types 940 and 1490 decade inductors. Each inductor is engraved with nominal inductance, accuracy, and inductance change versus current. The connections are Type [[938-B]] Jack-Top binding posts, one being grounded. | ||
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<gallery> | <gallery> | ||
GR 1481-A Front.jpg | |||
GR 1481-A Front A.jpg | |||
GR 1481 Top.jpg | GR 1481 Top.jpg | ||
GR 1481 Rear.jpg | GR 1481 Rear.jpg | ||
Latest revision as of 07:36, 11 August 2024
The General Radio 1481-A Inductor was introduced in Catalog M (1951) and remained available through Catalog R (1963).
The Type 1481-A inductor is of the toroid wound, dust-core design. The toroid is clamped between the two aluminum case halves. The 1481-A inductor is derived from Types 940 and 1490 decade inductors. Each inductor is engraved with nominal inductance, accuracy, and inductance change versus current. The connections are Type 938-B Jack-Top binding posts, one being grounded.
See the overview page 1481 for the complete series.
Specifications
- Nominal Inductance: 1 mH
- Adjustment Accuracy: ±1%
- RMS Current: 24 ma
- Resonant Frequency: 1.10 MHz
- DC Resistance: 0.043 Ω approximately
