Active load isolator and wireless speaker for mixed signal environments
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United States of America Patent
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Feb 26, 2013
Grant Date -
Jun 14, 2012
app pub date -
Feb 21, 2012
filing date -
Jul 17, 2007
priority date (Note) -
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Abstract
An isolation circuit includes a low dropout operational current control loop and a shunt regulator. The current control loop is configured to drive the shunt regulator to result in a high dynamic impedance ratio between a voltage source and a load. The current control loop may include a series-pass transistor, a current sensing resistor, and a high side current sensor.
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