Patent · US Active

Power supply device for a microphone

US8379896B2 · kind B2 · utility

0Cited by

2References

16Claims

0Family size

Assignee

Sennheiser electronic GmbH & Co. KG · DE

Inventors

Manfred Hibbing · Großburgwedel, DE
Tom-Fabian Frey · Braunschweig, DE

Key dates

Filing date	May 4, 2010
Grant date	Feb 19, 2013
Priority date	—
Expiry date	Mar 26, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04R19/04
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The present invention concerns a feed device for feeding a microphone with a dc voltage. The feed device has first, second and third terminals (a, b, c), a resistor arrangement having at least a one resistor (R1-R3) and a dc voltage source (11) for providing a feed voltage. In that case the resistor arrangement is disposed between the dc voltage source (11) and the first and second terminals (a, b). In addition the feed device has a measuring device and a control device (4). The measuring device detects a dc voltage between the first and second terminals and the third terminal, and the control device (4) reduces or increases the ohmic resistance of the resistor arrangement and the feed voltage of the dc voltage source (11).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.