| 摘要 |
<p>New fabricating methods and products for manufacture and assembly of tunable-inductance magnetically-soft ferrite core assemblies. Pot core type elements (92, 94) are pressure molded from ferrimagnetic particles having residual reactivity; unitary helical threads (96) are tapped in central openings of compacted core elements while in the green state; subsequent heat treatment converts the green compact to a ceramic. Use of a shrink tap provides compatibility of the unitary threads with the pre-threaded male adjustment members of the prior practice. A new assembly enables use of identical core half sections (92, 106); provision is made for support at one or both longitudinal ends of the male tuning member (67, 100, 124). </p> |
