Electricity: conductors and insulators – Insulators – Special application
Patent
1976-09-15
1978-04-11
Askin, Laramie E.
Electricity: conductors and insulators
Insulators
Special application
336136, H01F 1502, H01F 2106
Patent
active
040840689
ABSTRACT:
The invention relates to a supporting device for a magnetic core, a coil arranged on the core and an adjusting screw for changing the inductance of the coil. This complete unit is intended to be mounted on a printed circuit card with the supporting device being a holder for the adjusting screw and providing electrical insulation between the core and the printed circuit card. The supporting device is designed as a circular disc with an upright standing projecting part which is provided with an inner thread in which the adjusting screw can be inserted for adjusting the inductance of the coil. When mounting a unit consisting of a core, a coil, an adjusting screw and a supporting device, on a circuit card printed on both sides, the circular disc of the supporting device provides electrical insulation between the core and the printed circuit card.
REFERENCES:
patent: 2626764 (1953-01-01), Dunlap
patent: 2644978 (1953-07-01), Becker
patent: 3743853 (1973-07-01), Dittman et al.
Lepik Toomas
Rodin Sven-Erik
Askin Laramie E.
Telefonaktiebolaget L M Ericsson
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