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Measuring "capacitor drift"?

Discussion in 'Electronic Basics' started by steamer, Nov 6, 2005.

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  1. steamer

    steamer Guest

    --Have recently learned of this phenom. Can someone describe a
    method one relatively unversed in electronics might use to measure
    change in capacitance? Not necessary to have the cap in the circuit
    when measuring..
     
  2. Jamie

    Jamie Guest

    use a meter with a cap function on it.,
    subject it to freezing spray and then with
    a hair dryer.
    log down the change in value.
     
  3. steamer

    steamer Guest

    : subject it to freezing spray and then with
    : a hair dryer.
    : log down the change in value.
    --Hey that's neat! So it's a temperature thing and not a
    time-in-service thing?
     
  4. The high-K ceramic types have both effects. Electrolytic caps can
    also have a slow loss of capacitance over time, as the electrolyte
    escapes.

    Here is a good tutorial on the many differences of capacitor types:
    http://my.execpc.com/~endlr/index.html
     
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