DocumentCode
1082769
Title
A miniature microphone for transistorized amplifiers
Author
Bauer, B.
Author_Institution
Shure Brothers, Inc., Chicago, Illinois
Issue
6
fYear
1953
Firstpage
5
Lastpage
7
Abstract
A new magnetic microphone has been developed for use in hearing aids and communication and similar equipment which requires a small, light, medium-impedance microphone. The new microphone has a diameter of 1 inch and a thickness of 3/8 inch, and i t weighs 9 grams. The sensitivity is high enough to override the relatively high noise level of transistors in the frequency range most useful for voice transmission.
Keywords
Air gaps; Coils; Frequency; Leg; Magnetic circuits; Magnetic flux; Micromagnetics; Microphones; RLC circuits; Transducers;
fLanguage
English
Journal_Title
Audio, Transactions of the IRE Professional Group on
Publisher
ieee
ISSN
2168-2976
Type
jour
DOI
10.1109/T-SP.1953.28159
Filename
1162312
Link To Document