Alpha Core Goertz 3.9mH 12 AWG Copper Foil Inductor
High-technology laminating makes it possible to manufacture inductors from high-purity copper or silver foil wound onto a Lexan polycarbonate tube. Foil inductors are mounted by means of a single polycarbonate screw through the central bore, or a silicone elastomer, or a hot-melt adhesive.
- DCR: .304
- Diameter: 4.1”
- Height: 2.00”
Specifications
- Conductor material: 99.9% pure copper foil
- Conductor dimensions: .003" x 1.00"
- Coating: .002" thick polypropylene film
- Leads: No joint, integral design
- Tolerance: +/- 2.5%
Characteristics
- Negligible skin effect below 100 kHz; many orders of magnitude below conventional wire-wound types.
- High winding tension and vacuum fusing of faces provide high dimensional stability, effectively locking the conductors in place. Wire-wound inductors, which allow relative motion of conductors due to electromagnetic forces, will exhibit FM distortion by the process of reactance modulation.
- Flat inductive reactance from 5 Hz to 50 kHz.
- No saturation distortion due to air-core design. Inductors contain no magnetic materials.
- Reduced power loss. Highest space factor (ratio of conductor cross area to total cross-section) means lower DC resistance within comparable dimensions. Negligible power loss due to skin-effect.
- Extremely low stored charge.
- Cool operation even during prolonged high output power operation. The high space factor and winding density results in improved heat dissipation.
Foil inductors have obvious advantages over wire-wound inductors in terms of improved electrical and sonic characteristics. This important new development has much to contribute to the design of state-of-the art loudspeaker crossover networks.
