TITLE
    Portable StyleWriter: How the Two Power Sources Interact (9/93)
Article ID:
Created:
Modified: 		13418
9/24/93
9/24/93
TOPIC

    Article Created: 16 September 1993


    What is the value of the DC current necessary to run the Portable
    Stylewriter?

DISCUSSION


    The AC adapter supplies +9.5VDC to the printer. The Nickel-cadmium battery
    Pack supplies 6VDC.

    Here is a brief explanation of how the two power sources interact:
    When the DC plug of the AC adapter is plugged into the printer, the unit
    will switch from the Ni-Cad battery to the AC adapter. The DC input, after
    passing through a 0.4A fuse and a noise filter, is checked for voltage by
    the A/D converter to judge whether the input is from the 9.5VDC or 6VDC
    Ni-Cad. If the Ni-Cad only is being used, the 'low battery sensing
    function' and 'auto power off' functions are activited. When the Ni-Cad
    pack is being charged, the A/D converter is used to check that DC is being
    inputted from the AC adapter and to activate the 'auto charge off
    function'.


Document Information
Product Area: Printers
Category: StyleWriters
Sub Category: Portable StyleWriter

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