TITLE
    Macintosh Quadra 950: Power Supply
Article ID:
Created:
Modified: 		10208
5/15/92
5/15/92
TOPIC




    This article describes the Macintosh Quadra 950 power supply.

DISCUSSION


    The power supply on the Macintosh Quadra 950 is a 300 watt power supply,
    and adapts automatically to the AC voltage that is applied. The
    localization package for the computer includes the appropriate power cord
    for the destination country.

    The power supply includes a 120 mm (4.72-inch) fan that provides quiet
    cooling for the entire system. The power supply also includes a switched
    convenience receptacle to provide power for the monitor.

    Power Supply Ratings
    --------------------
    Load +5V +5V TRKL +12V -12V Total Power
    ---- --- -------- ---- ---- -----------
    Minimum 5 A 1 mA 150 mA 50 mA 27.5 W
    Maximum 33 A 125 mA 10 A 1 A 303.25 W
    Peak 33 A 125 mA 20 A* 1 A 424 W*

    *For a period of 12 seconds maximum

    The table shows the minimum, maximum, and peak ratings for the power
    supply. The output labeled +5V TRKL is a trickle supply that is available
    whenever the computer is plugged in. That output provides power for the
    parameter RAM and the power-on logic, along with standby power for the
    NuBus cards. The +12V output is designed with a peak capacity high enough
    to meet the combined current demands made by all the peripheral devices
    turning on at the same time.



Document Information
Product Area: Computers
Category: Macintosh Quadra & Centris
Sub Category: Quadra 950

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