Automated adjustment of air-core coil inductance

Details Automated adjustment of air-core coil inductance Automated adjustment of air-core coil inductance

1989-12-28

1990-12-25

Gensler, Paul

Tuners

Remotely controlled tuner

296021, 29705, 29745, 334 71, 336 20, H03J 106, H01F 2104

Patent

active

049806637

ABSTRACT:
The inductance value of air-core coils are adjusted using automated methods and inexpensive, noncomplicated apparatus. Adjusting tools are provided which displace coil turns in a linear motion with respect to the coil centerline. Specifically, the coil turns can be displaced by sliding perpendicularly to the coil centerline or by rotating a group of coils in order to modify the coil inductance. The adjusting tools used and the method of coil-turn displacement allow the automated method to reincrease the inductance of a coil in the event that displacement causes an over-decrease of inductance.

REFERENCES:
patent: 2252092 (1941-08-01), Newman
patent: 2722662 (1955-11-01), Tyminski
patent: 3648205 (1972-03-01), Bunch et al.
patent: 3676813 (1972-07-01), Renskers
patent: 3987386 (1976-10-01), Valliere
patent: 4325040 (1982-04-01), Whitley

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