DOUBLE HELIX CYLINDRICAL DESIGNS

At the core of Union City Filament’s cathode heater business, electron device filament business, and ionization gauge grid business lay double helix cylindrically configured coils. These designs consist of single wire coils and coiled coils wound into two helices on cylindrical mandrels for a specified number of turns at a specified pitch. Leg formations, coil diameters, and wire diameters can be modified to meet application requirements. Double helix configurations are prevalent in applications that require non-inductive properties.

Typical material types include tungsten, 3% rhenium tungsten, and thoriated tungsten. Double helix cylindrically designed coils are available coated in one of our alumina coatings.

DOUBLE HELIX CYLINDRICAL PRODUCTS

Double Helix (Bifilar) Filament with standard crossover. Shown with Alumina Coating. Most commonly used as a Cathode Heater.
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UCF-SK015

Double Helix Coiled Coil Filament. Shown with Alumina Coating and with one leg formed to the center of the coil. Most commonly used as a Cathode Heater.
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UCF-SK016

Double Helix Coiled Coil Filament. Shown with Alumina Coating and with both legs positioned inward from the coil diameter. Most commonly used as a Cathode Heater.
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UCF-SK017

Coaxial Stacked Filament. Shown with Alumina Coating. Most commonly used as a Cathode Heater.
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UCF-SK018

Double Helix (Bifilar) Filament with loop-top crossover. Most commonly used in Microwave Tubes.
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UCF-SK019

Double Helix (Bifilar) Filament or Grid with hairpin return. Most commonly used in Ionization Gauges and Scientific Research Applications.
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UCF-SK020

Double Helix (Bifilar) Filament or Grid with hairpin return and legs formed perpendicular to the coil axis. Most commonly used in Ionization Gauges and Scientific Research Applications.
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UCF-SK021

DOUBLE HELIX CYLINDRICAL INQUIRY

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