Member Blog Posts: amplifier

  • How to GaN: eGaN®FETs for High Frequency Wireless Power Transfer

    How to GaN: eGaN®FETs for High Frequency Wireless Power Transfer

    Posted Jan 15, 2014 By Alex Lidow

    The previous columns in this series discussed the advantages of eGaN FETs in high frequency hard-switching, resonant, and soft-switching designs. In…

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  • Op Amp/Comparator Tutorial

    Op Amp/Comparator Tutorial

    Posted Oct 05, 2013 By ROHM

    1. What is Op-Amp/Comparator?

    1.1 Model of Amplifier (Voltage Amplifier) and Op-Amp
    An amplifier has a function to increase an input signal by…

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  • Chopper-Stabilized Amplifiers with T/H Signal Demodulator

    Chopper-Stabilized Amplifiers with T/H Signal Demodulator

    Posted Sep 20, 2013 By Allegro MicroSystems

    Abstract

    The conventional signal demodulator of a chopper amplifier can be substituted by track-and-hold (T/H) and averaging functions. This…

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  • Understanding Amplifier Gain Settings

    Understanding Amplifier Gain Settings

    Posted Aug 22, 2013 By IDT

    Description of Amplifier Gain Settings
    In standalone discrete amplifier products, gain is typically stated in V/V (volts per volt), or it may be…

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  • High Efficiency Current Sensing Hall Sensor ICs

    High Efficiency Current Sensing Hall Sensor ICs

    Posted Jul 26, 2013 By Allegro MicroSystems

    Recent advancements in integrated Hall-effect current sensor technology provide an alternative current sensing solution that reduces power…

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  • High-Speed Full-Wave Rectification

    High-Speed Full-Wave Rectification

    Posted Jul 12, 2013 By Intersil

    Systems requiring power conversion and level detection employ full-wave rectification, traditionally provided by a diode bridge, but diode bridges…

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  • Fast Verification of PN512 and Amplifier

    Fast Verification of PN512 and Amplifier

    Posted Jul 08, 2013 By NXP

    This document is intended to give a practical guideline on functional verification of a reader system based on PN512 and amplifier based on [1]. The…

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  • Traveling Wave Amplifier MMIC

    Traveling Wave Amplifier MMIC

    Posted Jul 01, 2013 By Avago Technologies

    *Constant Linearity Variable Gain Traveling Wave Amplifier MMIC for 1 to 26.5 GHz
    Applications*

    Abstract
    This paper describes the design and test…

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  • HD Audio EAPD

    HD Audio EAPD

    Posted Jun 27, 2013 By IDT

    Definition:
    The term EAPD stands for External Amplifier Power Down.

    Logical Operation:
    Although named External Amplifier Power Down by the Intel…

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  • Integrated LNA and Image-Rejection Mixer

    Integrated LNA and Image-Rejection Mixer

    Posted Jun 15, 2013 By Avago Technologies

    An Integrated Low Noise Amplifier and Image-Rejection Mixer in a Surface Mount Package for Low Cost 10-22 GHz Applications

    *I….

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  • Selecting the Best Audio Amplifier

    Selecting the Best Audio Amplifier

    Posted Jun 12, 2013 By Maxim

    How to Select the Best Audio Amplifier for Your Design

    Abstract: With the ever changing requirements in the audio market, there have been many…

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  • Modular Phono Preamplifier

    Modular Phono Preamplifier

    Posted Apr 29, 2013 By Extreme Circuits

    High Quality Moving Magnet Pick-up module, Two-stage Series/Shunt feedback RIAA equalization

    Any electronics amateur still in possess of a…

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  • High Power Headphone Amplifier Using BD139-40

    High Power Headphone Amplifier Using BD139-40

    Posted Apr 25, 2013 By Extreme Circuits

    Firstly, I’d like to stress that the intended use of this circuit is only one of many possible applications. Apart from the obvious usage as a…

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  • 45 Watt Class-B Audio Power Amplifier

    45 Watt Class-B Audio Power Amplifier

    Posted Apr 25, 2013 By Extreme Circuits

    45W into 8 Ohm – 69W into 4 Ohm, Easy to build – No setup required

    These goals were achieved by using a discrete-components op-amp driving a BJT

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  • RIAA Phono Preamplifier

    RIAA Phono Preamplifier

    Posted Apr 25, 2013 By Extreme Circuits

    Since modern sound systems usually lack inputs for record players, separate MD preamplifiers are becoming increasingly popular. They are needed not…

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  • 5.3W Amplifier With Surround System

    5.3W Amplifier With Surround System

    Posted Apr 24, 2013 By Extreme Circuits

    The AN7147 Dual 5.3-watt Audio Power Amplifier from Panasonic is listed as a ‘replacement type’ so hopefully will be around for some time to…

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  • AF Amplifier With Digital Volume Control Based On TDA8551

    AF Amplifier With Digital Volume Control Based On TDA8551

    Posted Apr 24, 2013 By Extreme Circuits

    The Philips Semiconductors TDA8551 is a small audio amplifier with an integrated volume control. When operated from +5 V, it delivers a nominal…

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  • Simple Hybrid Audio Amplifier

    Simple Hybrid Audio Amplifier

    Posted Apr 24, 2013 By Extreme Circuits

    The debate still goes on as to which are better, valves or transistors. We don’t intend to get involved in that argument here. But if you can’t…

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  • Headphone Amplifier

    Headphone Amplifier

    Posted Apr 24, 2013 By Extreme Circuits

    Parts:

    P1 = 22K
    R1 = 560R
    R2 = 10K
    R3 = 10K
    R4 = 12K
    R5 = 2.2R
    R6 = 2.2R
    R7 = 22R-1/2W
    Q1 = BC337
    Q2 = BC327
    Q3 = BC337
    Q4 = BC327
    C1 =…

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  • 18 Watt Audio Amplifier

    18 Watt Audio Amplifier

    Posted Apr 24, 2013 By Extreme Circuits

    High Quality very simple unit, No need for a preamplifier

    Amplifier parts:

    P1 = 22K
    R1 = 1K
    R2 = 4K7
    R3 = 100R
    R4 = 4K7
    R5 =…

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