-40%
GR General Radio 1490-F 4-Dial Decade Inductor 100µH/step to 100mH/step 1490F
GR General Radio 1490-F 4-Dial Decade Inductor 100µH/step to 100mH/step 1490F
GR General Radio 1490-F 4-Dial Decade Inductor 100µH/step to 100mH/step 1490F

GR General Radio 1490-F 4-Dial Decade Inductor 100µH/step to 100mH/step 1490F

$ 343.2

Availability: 100 in stock
  • MPN: 1490-F
  • Condition: Used
  • Decade Box Type: Inductance
  • Refund will be given as: Money Back
  • Brand: General Radio
  • All returns accepted: Returns Accepted
  • Item must be returned within: 30 Days
  • Return shipping will be paid by: Buyer
  • Measurement Range: 1.111 H
  • Number of Decades: 4
  • Restocking Fee: No

    Description

    Standard Description
    Description
    GR General Radio 1490-F 4-Dial Decade Inductor 100µH/step to 100mH/step
    The GR 1490-F Decade Inductor is a convenient inductance substitution box for use in wave filters, equalizers, and tuned circuits throughout the range of audio and low radio frequencies. As components in oscillators, analyzers, filters and similar equipment, decade inductors are especially useful during the preliminary design period, when the ability to vary circuit elements over relatively wide ranges is necessary to determine optimum operating values. As moderately precise standards of inductance they have values of low-frequency Q, much larger than those of air-cored coils. Toroidal construction minimizes external magnetic fields, so that the coils can be stacked without errors from mutual inductance. The internal inductor toroids are virtually impervious to external magnetic fields.
    FEATURES
    :
    Aluminum covers provide electrostatic shielding and mechanical protection.
    Individual toroids are wax dipped to keep out moisture.
    zero minimum inductance to 1.111 H total in steps of 100µH
    The item is in good condition, tested and fully functioning.
    Shipping Weight (lbs.):
    27
    Shipping Dimensions (in.):
    26 x 20 x 11