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Class Information
Number: 330/298
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including protection means
Description: Subject matter including circuits or devices for protecting the amplifying means.










Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8680926 Amplification circuit comprising input signal limiting network Mar. 25, 2014
8674769 Power amplifier protection circuit, communication device, and method Mar. 18, 2014
8648656 Low-noise amplifier with through-mode Feb. 11, 2014
8644777 System and method for power amplifier over-voltage protection Feb. 4, 2014
8624674 Output stage of a class-A amplifier Jan. 7, 2014
8610505 Amplifier thermal management Dec. 17, 2013
8565699 Setting of power amplifier control voltage Oct. 22, 2013
RE44525 Systems and methods for over-current protection Oct. 8, 2013
8508300 Circuit for thermal protection in audio power amplifier and method thereof Aug. 13, 2013
8487705 Protection circuit for radio frequency power amplifier Jul. 16, 2013
8476979 High-efficiency power module Jul. 2, 2013
8465432 Active transducer probes and circuits Jun. 18, 2013
8461932 Signal amplifier, bridge connection signal amplifier signal output device, latch-up prevention method, and program storage medium Jun. 11, 2013
8451071 Low noise oscillators May. 28, 2013
8446216 Anti-pop circuit May. 21, 2013
8437478 Systems and methods for improved over-current clipping May. 7, 2013
8427238 Performance optimization of power amplifier Apr. 23, 2013
8424190 Method of providing electrostatic discharge protection for a read element in a magnetic storage system Apr. 23, 2013
8421540 Method and apparatus for run-time short circuit protection for amplifiers Apr. 16, 2013
8390492 Signal processing apparatus Mar. 5, 2013
8385854 Adaptive parametric power amplifier protection circuit Feb. 26, 2013
8373507 Power amplifier protection Feb. 12, 2013
8362840 Apparatus and methods for biasing a power amplifier Jan. 29, 2013
8339202 Current sensing system and method Dec. 25, 2012
8299853 Class D amplifier Oct. 30, 2012
8289076 Amplifying circuit Oct. 16, 2012
8274333 Method and apparatus for protecting devices in an RF power amplifier Sep. 25, 2012
8264280 Load driving circuit Sep. 11, 2012
8258876 Power amplifier protection circuit Sep. 4, 2012
8237495 High efficiency amplifier with reduced electromagnetic interference Aug. 7, 2012
8228119 Amplifying circuit Jul. 24, 2012
8222960 RF power amplifier Jul. 17, 2012
8203385 Input stage for an amplifier Jun. 19, 2012
8198942 Integrated thermoelectric protection circuit for depletion mode power amplifiers Jun. 12, 2012
8193720 Electrodeless lamp protecting device Jun. 5, 2012
8193865 Output circuit using analog amplifier Jun. 5, 2012
8179648 Power amplifier protection May. 15, 2012
8164389 Overdrive protection circuit Apr. 24, 2012
8154345 Apparatus and method for current sensing using a wire bond Apr. 10, 2012
8154346 Short circuits and power limit protection circuits Apr. 10, 2012
8143950 Power amplifier break down characteristic Mar. 27, 2012
8081028 Systems and methods for improved over-current clipping Dec. 20, 2011
8067986 Closed loop surge protection technique for differential amplifiers Nov. 29, 2011
8068622 Method and apparatus for controlling a selectable voltage audio power output stage Nov. 29, 2011
8063699 Anti-pop circuit Nov. 22, 2011
8054129 Class D amplifier Nov. 8, 2011
8054093 Sensor threshold circuit Nov. 8, 2011
8022763 Amplifier failure detection apparatus Sep. 20, 2011
8018287 RF power amplifier apparatus and power supply circuit for controlling power-supply voltage to RF power amplifier Sep. 13, 2011
7991437 Method and apparatus for controlling output power in power amplifiers Aug. 2, 2011

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