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Dummy Load

Discussion in 'General Electronics Discussion' started by zemaj, Mar 14, 2011.

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  1. zemaj


    Mar 7, 2011

    Does anyone know the exact descriptions/definitions for the dummy load that used to test power supply? Please send link other than wikipedea.

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    It is a device which can provide a load in order to allow a power supply to be tested.

    Sorry if that sounds obvious, but that's what it is.

    Typically it provides a known load, either by providing one or a combination of (possibly variable) current, resistance, or power loads. If used to test a current source, it may provide a resistance, power or voltage load. If used to test a maximum power regulator (as used in solar installations) it may provide a resistance, current, or voltage load.

    Other combinations don't make sense (e.g. a constant voltage load for a voltage source, constant current for a current source, or constant power to a maximum power source)

    Essentially it acts like a big fat resistor, but the resistance may change in order to maintain the characteristics of the load you wish to emulate.
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