Voltage supply circuit, power supply circuit, microphone...

Details Voltage supply circuit, power supply circuit, microphone... Voltage supply circuit, power supply circuit, microphone...

2011-04-19

2011-04-19

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Circuitry combined with specific type microphone or loudspeaker

With electrostatic microphone

C381S111000, C381S120000, C381S122000

Reexamination Certificate

active

07929716

ABSTRACT:
A voltage supply circuit includes a power supply booster, an amplifier operating with a voltage generated by the power supply booster as a power supply voltage and supplying a bias voltage to a sensor, and an output voltage setting part including a feedback resistor for the amplifier. The feedback resistor has resistance determined according to a set value of a bias voltage of the sensor.

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Kougakutosho Ltd. “PA AUDIO-COMMUNICATION SYSTEM,” 1996.

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