A switching amplifier including a voltage sensor circuit connected to a high voltage supply rail for measuring the power supply voltage. A current sensor circuit is connected to the high voltage supply rail for measuring the power supply current. An error amplifier is connected to the switching amplifier and receives one or more values based on the measurements taken by the voltage sensor and current sensor, and the error amplifier produces an error signal when a predetermined power limit is exceeded. A signal limiting circuit is connected to the error amplifier and the switching amplifier and limits the output power to rated power at any rated load impedance when the error amplifier produces the error signal. This switching amplifier is capable of automatically limiting output power at rated power into all rated load impedances, and dynamically reacts to the frequency-dependant impedance of a typical audio system.
申请公布号
WO2011087656(A2)
申请公布日期
2011.07.21
申请号
WO2010US60062
申请日期
2010.12.13
申请人
ROCKFORD CORPORATION;ALBERS, MARK, D.;STRICKLAND, JAMES, C.;BAKER, DAVID DEAN
发明人
ALBERS, MARK, D.;STRICKLAND, JAMES, C.;BAKER, DAVID DEAN