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US Patent Application 20100061576 - Amplification Circuit and Hearing Aid

Application 20100061576 Filed on September 9, 2008. Published on March 11, 2010

Inventors

US Classes

381/322, Specified casing or housing330/127WITH CONTROL OF POWER SUPPLY OR BIAS VOLTAGE

Attorney, Agent or Firm

International Classes

H04R 25/00
H03G 3/00

Issued Patent Number:

8160284


Abstract text


Certain embodiments of the present technology provide improved amplification circuits and hearing aids that can utilize such amplification circuits. In an embodiment, for example, an amplification circuit includes: a first sub circuit configured to create a voltage drop when a supply voltage is above a first voltage; and a second sub circuit configured to create a reverse voltage drop when the supply voltage is below a second voltage, wherein the first and second sub circuits operate to maintain idling current within a range. Certain embodiments of the present technology also provide hearing aids that include removable dampers.

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