| 摘要 |
An improved magnetic circuit apparatus and method for manufacturing is disclosed. In one embodiment, the improved magnetic circuit includes an upper assembly and a lower assembly. A selected amount of magnetic flux-enhancing material is disposed within an air gap formed between the upper and lower assemblies, thereby focusing magnetic flux between the assemblies. The magnetic flux-enhancing material reduces magnetic flux loss across the air gap, and thereby eliminates post assembly calibration of the magnetic circuit. When the upper assembly and the lower assembly are fitted together, no calibration is required to tune the magnetic circuit to specified tolerances.
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