Condenser microphone unit

Details Condenser microphone unit Condenser microphone unit

2005-11-28

2009-12-08

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

C381S369000, C381S178000

Reexamination Certificate

active

07630506

ABSTRACT:
The present invention provides a condenser microphone unit that enables stabilization of the conduction between an impedance converter (FET) and a rear pole plate constituting a condenser section. A condenser microphone unit11includes a rear pole plate14forming a condenser section12together with a diaphragm13, an impedance converter43mounted on a printed circuit board42, and a relay terminal member32placed between the rear pole plate14and the impedance converter43to electrically connect the rear pole plate14to the impedance converter43via the relay terminal member32. The rear pole plate14and the impedance converter43are accommodated in a metal case52. The conductive elastic material32is formed of a combination of a first conductive elastic material33that contacts the impedance converter43and a second conductive elastic material34that contacts the rear pole plate14. This stabilizes the connection between the rear pole plate14and the second conductive elastic material34.

REFERENCES:
patent: 7146016 (2006-12-01), Pedersen

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