Re: Repeatability of Home switches

Thanks, but still confused...

If I am trying to uses this type of a switch as if it were a normal
SPDT switch, will it work?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, JanRwl@A... wrote:
> In a message dated 4/2/2003 7:46:42 PM Central Standard Time,
> mgamber@c... writes:
>
> >
> > The output on the switch is confusing, does sink mean that it is
> > coupling the supply voltage to the output? Or is it contact
closure
> > like a normal switch
>
> mgamber: "Sink" means the part has a solid-state output
that "connects" the
> output to GROUND or (-). "Source" means it connects the output to
+, usually
> +5 VDC.
>
> Generally, "sink" is done with an NPN junction (transistor) which
has its
> emitter connected to (-) ground, and the collector is tied
to "output".
> "Source" is done various ways, but think of that as basically
the "same, only
> reverse-polarity" for "sketching purposes".
>
> These two words, "sink" and "source" are used to express what
semiconductor
> junctions handling the output of an IC (etc.) are doing, but you
might think
> of a SPDT relay, the "wiper" being "output", and the other two
contacts tied
> to +ve and -ve. Then, as the relay is operated, it
either "sources" or
> "sinks". This is not the kind of explanation that makes silicon
wizards
> gleeful, but it is OK for beginners!
>
> Jan Rowland, Ignernt ol' Troll
>
>
>
> [Non-text portions of this message have been removed]