Featured patents

Semiconductor Integrated Circuit Device
US 08803610 B2, Aug. 12, 2014, Having D.C. feedback bias control for stabilization, Masashi Arakawa et al. / Renesas Electronics Corporation (Kawasaki-shi, JP)
A semiconductor integrated circuit device, comprising:…

Versatile Audio Power Amplifier
US 08872584 B2, Oct. 28, 2014, Including Class D amplifier, Michael Nussbaum et al. / Bose Corporation (Framingham, US)
An audio power amplifier comprising:…

Impedance Compensation for Operational Amplifiers Used in Variable Environments
US 08866551 B2, Oct. 21, 2014, Having temperature compensation means, David Perchlik et al. / Crane Electronics, Inc. (Redmond, US)
A circuit for use with an operational amplifier in an environment…

Class E Power Amplifier
US 08704601 B2, April 22, 2014, Including plural stages cascaded, Sang Wook Nam et al. / SNU R&DB Foundation (Seoul, KR)
A class-E power amplifier, comprising a driver stage (DS) including a first power…

Amplifier Device With Reiterable Error Correction Scheme With Balanced Negative Feedback
US 08686793 B2, April 1, 2014, Hum or Noise or Distortion Bucking Introduced Into Signal Channel, Giovanni Stochino et al.
Amplifier device, capable to receive at an input an input signal and to provide…

Positive and Negative Voltage Input Operational Amplifier Set
US 08692618 B2, April 8, 2014, Having particular biasing arrangement, Yen-Cheng Cheng et al. / Orise Technology Co., Ltd. (Hsinchu, TW)
A positive and negative voltage input operational amplifier of a source driver,…

Power Supply Arrangement for Multi-Stage Amplifier
US 08659355 B2, Feb. 25, 2014, With Control of Power Supply or Bias Voltage, Robert Henshaw et al. / Nujira Limited (Cambridge, GB)
A multi-stage amplifier comprising: a first amplifier stage; a second amplifier…

Adjustable Gain Audio Power Amplifying Circuit
US 08643434 B2, Feb. 4, 2014, Sum and Difference Amplifiers, Guojun Zhu / IPGoal Microelectronics (Sichuan) Co., Ltd. (Chengdu, Sichuan Province, CN
An adjustable gain audio power amplifying circuit comprising an input unit,…

Buffering Apparatus and Method
US 08604880 B2, Dec. 10, 2013, Including field effect transistor, Steven E. Boor / Knowles Electronics, LLC (Itasca, US)
An analog buffer circuit configured to substantially match an output impedance…

Pulse Electric Power Amplification Apparatus
US 08581664 B2, Nov. 12, 2013, Different bias control means for different stages of cascade amplifier, Haruo Kojima / Kabushiki Kaisha Toshiba (Tokyo, JP)
A pulse electric power amplification apparatus comprising:…

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