DocumentCode
1171367
Title
A Mechanically Resonant Transformer
Author
Gunn, Ross
Author_Institution
Naval Research Laboratory, Bellevue, Anacostia, D.C.
Volume
20
Issue
3
fYear
1932
fDate
3/1/1932 12:00:00 AM
Firstpage
516
Lastpage
519
Abstract
A transformer for use in the audio-frequency band is described whose output potential is remarkably selective to frequency. In its simplest form the diaphragm of a telephone receiver is replaced by a tuned reed of magnetic material. When a frequency is applied to the receiver corresponding to the natural frequency of the reed it is set in vibration and its motion is employed to generate potentials in another receiver unit adjacent to the tuned reed. A typical transformer had a selectivity of 115 at a frequency of 1500 cycles.
Keywords
Filters; Gunn devices; Radio transmitters; Radiofrequency amplifiers; Radiofrequency integrated circuits; Receivers; Resonance; Resonant frequency; Telephony; Tuned circuits;
fLanguage
English
Journal_Title
Radio Engineers, Proceedings of the Institute of
Publisher
ieee
ISSN
0731-5996
Type
jour
DOI
10.1109/JRPROC.1932.227586
Filename
1685095
Link To Document