Vortec Air Flow Amplifiers extract smoke and debris to enhance safety, ergonomics and productivity.

An amplifying structure includes a main amplifier configured to amplify a first signal; and a peak amplifier configured to amplify a second signal, each of the main amplifier and the peak amplifier including, respectively, a hybrid power device, the hybrid power device including, a first power transistor die configured to amplify signals of a first frequency, and a second power transistor die configured to amplify signals of a second frequency different than the first frequency.

A power converter with positive and negative supply rail outputs for feeding a single ended class D amplifier, the converter comprising a transformer arrangement, a supply pump reduction arrangement connected between the secondary windings and the positive and negative supply rail outputs, and a boost drive mode switching arrangement. A controller is adapted to control the power converter in a negate drive mode and a boost drive mode, wherein the output voltage in the boost mode is increased by means of the transformer and the boost drive mode switching arrangement. The output voltages on the positive and negative rails can be generated at two different output voltage levels without changing the duty cycle or dead time of the control signals.

Split amplifiers with configurable gain and linearization circuitry are disclosed. In an exemplary design, an apparatus includes first and second amplifier circuits and a linearization circuit, which may be part of an amplifier. The first and second amplifier circuits are coupled in parallel and to an amplifier input. The linearization circuit is also coupled to the amplifier input. The first and second amplifier circuits are enabled in a high-gain mode. One of the first and second amplifier circuits is enabled in a low-gain mode. The linearization circuit is enabled in the second mode and disabled in the first mode. The amplifier is split into multiple sections. Each section includes an amplifier circuit and is a fraction of the amplifier. High linearly may be obtained using one amplifier circuit and the linearization circuit in the low-gain mode.

Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.

CES 2016, LAS VEGAS – Today, HARMAN International Industries, Incorporated (NYSE:HAR), the premier connected technologies company for automotive, consumer and enterprise markets, announced the newest version of Infinity® Reference Speakers and...

CES 2015, LAS VEGAS – HARMAN, the premium global audio, visual, infotainment and enterprise automation group (NYSE:HAR), today unveiled the world’s first aftermarket amplifiers to feature HARMAN’s Clari-Fi technology, a proprietary software solution capable of analyzing and improving sound quality of compressed, digital music sources in real-time. HARMAN introduced Clari-Fi at CES 2014 and now the JBL® GTR and Infinity® Kappa amplifiers will feature the technology to provide a superior audio experience when playing digital music from streaming audio services.

IFA 2015, BERLIN – HARMAN International Industries, Incorporated (NYSE:HAR), the premier connected technologies company for automotive, consumer and enterprise markets, today announced the world’s first aftermarket amplifiers to feature HARMAN’s Clari-Fi...

Cham, Switzerland : Springer, [2019]

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