1481-E

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General Radio 1481-E
20 mH, ±0.6% inductor
General Radio 1481-E Inductor

Available from 1951 to 1963

Manuals
  • Manual Needed.
Catalog History
 Document Year Page
Catalog M 1951 57
Catalog N 1954 61
Catalog O 1956 163
Catalog P 1959 177
Catalog Q 1961 176
Catalog R 1963 165
(All manuals in PDF format unless noted otherwise)

The General Radio 1481-E Inductor was introduced in Catalog M (1951) and remained available through Catalog R (1963).

The Type 1481-E inductor is of the toroid wound, dust-core design. The toroid is clamped between the two aluminum case halves. The 1481-E 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: 20 mH
  • Adjustment Accuracy: ±0.6%
  • RMS Current: 5.4 mA
  • Resonant Frequency: 220 kHz
  • DC Resistance: 0.95 Ω approximately

Links

Photos