Voltage supply circuit and microphone unit comprising the same

Details Voltage supply circuit and microphone unit comprising the same Voltage supply circuit and microphone unit comprising the same

2005-08-16

2011-10-18

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Circuitry combined with specific type microphone or loudspeaker

With electrostatic microphone

C381S111000, C381S122000, C327S350000

Reexamination Certificate

active

08041056

ABSTRACT:
A voltage supply circuit comprises a voltage control circuit for outputting a bias voltage control signal according to a set value based on a bias voltage of a sensor and a voltage generation circuit for generating the bias voltage to be applied to the sensor based on the bias voltage control signal.

REFERENCES:
patent: 5260643 (1993-11-01), Sandhu
patent: 6194954 (2001-02-01), Kim et al.
patent: 7634096 (2009-12-01), Fallesen
patent: 2006/0008097 (2006-01-01), Stenberg et al.
patent: 8087168 (1996-04-01), None
patent: 2005192181 (2005-07-01), None
“PA acoustic system”, Kougakutosho Ltd., 1996, pp. 29-30.

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