Minimize resistor-generated noise in automotive multimedia

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  • PeteS in CA
    Badcaps Legend
    • Aug 2005
    • 3576
    • USA, Unsure of Planet
    #1

    Minimize resistor-generated noise in automotive multimedia

    Minimize resistor-generated noise in automotive multimedia
    By Yuval Hernik, Vishay Intertechnology
    Courtesy of PlanetAnalog
    (01/30/2006 10:12 PM EST)
    Professionals interested in the quality of sound reproduction typically have a β€œtrained ear” which is sufficiently perceptive to detect the insertion of noise and distortion of the original signal. The resistors in the preamplifier, audio amplifier, or volume control of a sound-reproduction system often cause these undesirable effects.
    ...
    Audio noise generated by resistors results from the motion of electrons within the resistor, which creates an unwanted AC signal which gets superimposed over the primary DC signal. This type of noise falls into two categories: thermal noise and current noise.
    This has some good info on resistor construction.
    PeteS in CA

    Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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    To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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