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Looking for an op amp

Discussion in 'Beginner Electronics' started by Jimmy, Aug 17, 2003.

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  1. Jimmy

    Jimmy Guest

    I need an op amp that can handle +- 28 volts rail to rail. I plan to drive a
    couple of transistors in an emitter follower configuration to build a small
    audio amp.
    TIA
     
  2. Jimmy

    Jimmy Guest

    Built one like this once before, wasn't a great amp but made a nice PA amp.
    I was going to build one for my auctioneer friend. I had the amp for a long
    time before I sold it, just cant remeber the op amp I used . Pretty sure it
    was an ECG unit, ECG/SK was the only thing the parts jobber sold. Dont have
    an ECG book anymore though. Real simple circuit, a complimentary pair of
    Darlington transistors used on the output. LM12 sounds like it may be what I
    want.
     
  3. Jimmy

    Jimmy Guest

    lm12 doesnt look so good after seeing the price, ouch.
     
  4. Jimmy

    Jimmy Guest

    Thanks, found my notes on the one I built years ago. I used an ECG 925.
    Looks like I will have to crank the power supply back a bit.This one will
    only handle +- 22 volts rail to rail. Hope I can still get them. Thanks to
    my well supplied "junk box" a 24' by 24' two story garage I havent had to
    buy a part in years, . Well not at the local parts store anyway, but dont
    think I have this one.
     
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