Need hardware advice: ULN2003A

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  1. - 28th September 2006, 08:50 #24
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    Luciano
    Luciano is offline Senior Member
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    Hi,

    PIN 9 must be connected to V+.
    (See picture below).

    Figure 17 shows 7 lamps on my datasheet. Lamps are resistive loads.
    There is no self-induction when you open a circuit with resistive loads
    so there is no need for the protection diodes. The figure 17 is probably
    a pinball circuit, when you press the button you can verify that all the
    lamps are working.

    Your case is the figure 19 on the datasheet.

    Best regards,

    Luciano

    The Datasheet I have:
    http://focus.ti.com/lit/ds/symlink/uln2003a.pdf
    (See page 11, fig. 19)


    (Click to enlarge the picture)

    (About SMD package)

    (Click to enlarge the picture)
    Last edited by Luciano; - 28th September 2006 at 09:38.
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