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US 8,265,306 B2Granted
Digital microphone and power supply unit for a digital microphone
AssigneeSennheiser electronic GmbH & Co. KG
InventorTom-Fabian Frey
Life of this patent
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Abstract
Provided is a digital microphone having a power supply. In this case the power supply is configured so as to provide a P48 V phantom power.
Claims6
A method for supplying power to a digital microphone, the method comprising:
- providing a P48 phantom power to the digital microphone, wherein the digital microphone is in accordance with the AES 42 standard;
- filtering the P48 phantom power with a low pass filter;
- stepping down the low pass filtered P48 phantom power to a first bias voltage by a switched mode power supply unit;
- and
- stepping down the first bias voltage to a first operating voltage by a voltage regulating unit.
2 more elements
A digital microphone, wherein the digital microphone is in accordance with AES42 standard, comprising:
- an analog microphone module having a P48 phantom interface;
- and
- a power supply configured to supply a P48 phantom power to the analog microphone module via the P48 phantom interface, said power supply having:
- a first switched mode power supply unit configured to step down an input voltage of the digital microphone;
- and
- a second switched mode power supply unit configured to step up the input voltage to a P48 voltage.
3 more elements
Dependencies are inferred from the claim text.