Survey of Features of German Powdered Iron Components
Abstract
The two most noticeable feature of the German powered iron components, as a class, are their complexity and lack of humidity protection. The Germans not only used a wide range of sizes of toroids, pots, spools, slugs and special shapes, but they resorted to very fine threaded parts, expensive ceramic coil forms and elaborate mountings which would have introduced production problems in the country. The Germans rarely accepted the sacrifice in Q attendant to molding a threaded brass adjusting screw int the core, but threaded the core itself or cemented it to a bakelite screw thread. The obvious engineering effort that went into the design of cores and mechanical accessories is worthy of notice. It is apparent that the Germans either gave higher consideration to, or had more industrial experience in, the application of powdered iron cores than our domestic users. It is unquestionable that, with the possible exception of the low-frequency materials, the German powdered iron materials in their components are superior to those that were generally available in this country at the start of the war. However, no materials tested for this report have shown marked superiority to currently available American materials. In fact, none of the German high-frequency cores have been found to approach the characteristics of those of several American manufacturers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1946
- Accession Number
- AD1203543
Entities
People
- S. G. Lutz
Organizations
- United States Naval Research Laboratory