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    National AN-104

    Abstract: preamp circuit using lm381 shure V15 noise specs confusing phonograph preamplifiers Shure Shure transformer AN104 Noise Specs National LM381 circuits magnetic phonograph cartridge
    Text: National Semiconductor Application Note 104 May 1974 It’s really all very simple — once you understand it. Then, here’s the inside story on noise for those of us who haven’t been designing low noise amplifiers for ten years. The level of en is not constant over the frequency band;


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    shure V15

    Abstract: preamp circuit using lm381 LM381 circuits phonograph preamplifiers Shure transformer AN-104 national noise specs confusing AN104 Noise Specs National DATA SHEET OF LM381 LM381
    Text: National Semiconductor Application Note 104 May 1974 It’s really all very simple — once you understand it. Then, here’s the inside story on noise for those of us who haven’t been designing low noise amplifiers for ten years. You hear all sorts of terms like signal-to-noise ratio, noise figure, noise factor, noise voltage, noise current, noise power,


    Original     		an007414 shure V15 preamp circuit using lm381 LM381 circuits phonograph preamplifiers Shure transformer AN-104 national noise specs confusing AN104 Noise Specs National DATA SHEET OF LM381 LM381 PDF