Mechanically biased semiconductor strain sensitive microphone

Details Mechanically biased semiconductor strain sensitive microphone Mechanically biased semiconductor strain sensitive microphone

1978-09-21

1980-01-08

Stellar, George G.

Electrical resistors

Incased, embedded, or housed

Element in insulation with outer metallic sheath

73777, 338 4, 357 26, H04R 1702, H04R 2102

Patent

active

041829379

ABSTRACT:
A piezo-electric transducer element is disclosed which is formed by selected etchings from boron doped silicon. The transducer includes a diaphragm and a spring lever adapted to bias the transducer element into a state of strain so that a vibration of the diaphragm is transmitted to the transducer element. The transducer element is particularly suitable for use in a telephone microphone.

REFERENCES:
patent: 3383475 (1968-05-01), Wiggins

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