Fine tuning coil having steel wire forming coil portion

Tuners – Variable inductor tuned – Adjustable core type

Patent

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Details

336136, H03J 304

Patent

active

043192092

ABSTRACT:
A fine tuning coil for use in a local oscillator of a tuner, which is made of a high-tension steel wire or a so-called piano wire. The wire has a diameter which is smaller than that of the conventionally used copper wires, and is loosely wound.

REFERENCES:
patent: 2100412 (1937-11-01), Scott
patent: 2416393 (1947-02-01), Huckleberry
patent: 3771079 (1973-11-01), Kawasaki et al.

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