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Mechanical strength of R-4 telephone receiver diaphragm
Use of compound diaphragm, in order to raise sensitivity of receiver and improve its communication efficiency; compound diaphragm was not developed before because of its mechanical strength limitations; results of strength tests which showed need for diaphragm to be properly tempered and heat treated; hardness measurement of diaphragms.
Mechanical strength of R-4 telephone receiver diaphragm
Use of compound diaphragm, in order to raise sensitivity of receiver and improve its communication efficiency; compound diaphragm was not developed before because of its mechanical strength limitations; results of strength tests which showed need for diaphragm to be properly tempered and heat treated; hardness measurement of diaphragms.
Mechanical strength of R-4 telephone receiver diaphragm
Tokyo. Elec Communication Laboratory -- Monthly J
Okawa, M. (author) / Murakami, M. (author)
1952
10 pages
Article (Journal)
Japanese
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