Grounding circuit for alternate audio plug designs
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United States of America Patent
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Sep 29, 2015
Grant Date -
Dec 12, 2013
app pub date -
Jun 10, 2012
filing date -
Jun 10, 2012
priority date (Note) -
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Abstract
Circuits, methods, and apparatus for grounding contacts in an audio jack. One example may provide a driver, such as a charge pump, driving a first depletion mode transistor coupled between a first contact in an audio jack and ground, and a second depletion mode transistor coupled between a second contact in the audio jack and ground. The first depletion mode transistor and second depletion mode transistor may be p-channel transistors or n-channel transistors.
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