Op-Amp Audio Amplifier

In the below circuit is a versatile audio amplifier employing a low cost LM358 op-amp. The differential inputs give the amplifier excellent immunity ...


In the below circuit is a versatile audio amplifier employing a low cost LM358 op-amp. The differential inputs give the amplifier excellent immunity to common-mode signals which are a common cause of amplifier instability. The dotted ground connection represents the wiring in a typical project illustrating how the ground sensing input can be connected to the ground at the source of the audio instead of at the amplifier where high currents are present. If the source is a power supply referenced signal then one of the amplifier inputs is connected to the positive supply.

For example, an NPN common-emitter preamplifier may be added for very high gain and by connecting the differential inputs across the collector resistor instead of from collector to ground, destabilizing feedback via the power supply is greatly reduced.

Op-Amp Audio Amplifier

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    buget headphoneampheadphones diyaudio
    the HD600 can be driven competently by some DIP op amps so even the simplest DIY amp could be fine - I would like to see > +/-10 V of clean drive, requiring >30 mA output current someone complaining +/-10 V into HD600 "will make you deaf" - these people really should look up "dynamic headroom" - excellent recordings, capturing live event dynamics, can have 20 dB peak to average SPL range - no amplifier clipping with audiophile recordings seems very little to ask)
    From: http://www.diyaudio.com/forums/headphones/170302-buget-headphoneamp-headphones.html

    which headphone <b>amplifier<b> would you recommend? ~$300
    I purchased one of these a few months ago to use with a notebook computer, I upgraded the supplied power supply and rolled a couple of the op-amps and it sounds quite good with my HD-600 headphones. Unfortunatly I haven't got a spare amp. It's going to be a while before I can afford Earles amp so I want something in the meantime. I thought about a Maverick Tubemagic D1. Still not sure. Blake. Cambridge Audio 740A Amplifier: Cambridge Audio 740C Transport: Cambridge
    From: http://www.stereo.net.au/forums/showthread.php/26164-Which-headphone-amplifier-would-you-recommend-~-300

    operational amplifiers op amp linear amplifiers audio
    Operational Amplifier (Op Amp), Audio Amplifier, Comparator, Instrumentation Amplifier and other Linear solutions from Texas Instruments.
    From: http://amplifier.ti.com/

    lm386 low voltage audio power amplifier
    LM386 - Low Voltage Audio Power Amplifier Audio Amplifier. 213. Kbytes. 4-Nov-95. AN-286: Application Note 286 Applications of the LM392 Comparator Op Amp
    From: http://www.national.com/mpf/LM/LM386.html

    lm386 low voltage audio power amplifier
    Low Voltage Audio Power Amplifier AN-69: LM380 Power Audio Amplifier: 213 Kbytes: 4-Nov-95 : AN-286: Application Note 286 Applications of the LM392 Comparator Op Amp IC
    From: http://www.national.com/mpf/LM/LM386.html

    operational amplifier wikipedia the free encyclopedia
    audio- and video-frequency pre-amplifiers and buffers; voltage comparators the PSRR of many devices, including the operational amplifier. Drift Real op-amp
    From: http://en.wikipedia.org/wiki/Operational_amplifier

    9 Responses to “Op-Amp Audio Amplifier”

    1. 3 op amp says:
      February 15, 2008 at 7:09 am

      please give it to me

    2. dani says:
      September 6, 2008 at 12:24 pm

      tampilkan skema audio yang sederhana

    3. dendy says:
      November 27, 2008 at 5:44 pm

      hai,,,tlng gambar rangkaian ampli. dari kompiuter ke spiker ge’de???

    4. welly says:
      December 14, 2008 at 6:52 am

      saya berkeingin mendapatkan sekema buffer audio amply fier dan final audio amplyfier 3000watt

      terimakasih

      welly

    5. AIPO says:
      February 1, 2009 at 1:29 am

      MINTA RANGKAIAN PEMANCAR FM SEDERHANA DAN MURAH DONG MAS

    6. phil carter says:
      February 13, 2009 at 1:13 am

      WTF

    7. THOBS says:
      February 15, 2009 at 11:31 am

      this site is good guys keep up the good work

    8. slamet hari yono says:
      March 30, 2009 at 7:58 pm

      saya mau minta tolong
      bisa g saya minta gambar ranakaian audio amplifier yang ukuranya besar hasil suara enak buat acara di lapangan.
      sebelumnya saya ucapkan terima kasih.
      Balas di mail Q y…

    9. indra says:
      July 6, 2009 at 10:03 am

      mungkin ingin lihat pembahasan power amp :) lihat forum dibawah :

      http://solfegio.indonesianforum.net/forum.htm

      semoga membantu.
      indra_co_maniz@yahoo.com

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